29.11.04 · psychology / motivation-emotion

Self-determination theory: Maslow, Deci-Ryan, and the intrinsic motivation of autonomy, competence, and relatedness

shipped3 tiersLean: none

Anchor (Master): Maslow 1943 Psych. Rev. 50; Deci 1971 J. Pers. Soc. Psychol. 18; Lepper-Greene-Nisbett 1973; Deci-Ryan 1985 (foundational SDT); Deci-Eghrari-Anglin-Keefe 1994; Ryan-Deci 2000 Am. Psychol. 55:68; Gagné-Deci 2005; Niemiec-Ryan 2009; Przybylski-Rigby-Ryan 2010; Ryan-Deci 2017

Intuition Beginner

What makes you do the things you do? Some actions are pulled by rewards: a wage for the shift, a grade for the essay, praise for the favour. Other actions are pushed from inside: curiosity about a question, the satisfaction of mastering a skill, the warmth of belonging to a group. Mid-twentieth-century psychology was dominated by the first picture. Behaviourists treated reward and punishment as the whole engine of action. Then in 1970, a graduate student named Ed Deci ran a small experiment that the reward picture could not explain.

Deci brought college students into a lab to work on an interesting puzzle called the Soma cube. Half were paid a dollar for each puzzle session. Half were not paid. After the session, the experimenter left the room "to fetch a form" and secretly recorded what the students did during an unobserved free period. The unpaid students kept playing with the puzzles. The paid students put them down and read magazines instead. The reward had not strengthened the behaviour; it had hollowed it out.

Deci and his collaborator Richard Ryan developed self-determination theory to explain this. The theory says humans carry three basic psychological needs: autonomy, the sense that your actions are your own; competence, the sense that you are effective in what you are doing; and relatedness, the sense that you are connected to other people. When a setting supports all three, people act with full engagement. When a setting thwarts them, people go through the motions even when the external rewards are generous. Abraham Maslow's hierarchy of needs, published in 1943, had anticipated something like this; self-determination theory gave it an empirical spine.

Visual Beginner

The diagram stacks the three architectures that this unit ties together. The left panel shows Maslow's 1943 hierarchy as a five-level pyramid rising from physiological needs, through safety, belonging, and esteem, up to self-actualization. The middle panel shows Deci's 1971 Soma experiment as two diverging arrows: a paid student who puts the puzzle down, an unpaid student who keeps playing. The right panel shows the three basic needs of Deci and Ryan's 1985 theory as a triangular frame supporting a single platform labelled intrinsic motivation, with a horizontal axis underneath plotting the regulation continuum from amotivation, through external, introjected, identified, and integrated regulation, to intrinsic motivation.

The arrow from the Maslow pyramid to the three-needs triangle carries the load-bearing claim of the unit: self-determination theory is the empirically-operationalised descendant of Maslow's intuition, not a separate framework. The arrow from the Soma panel to the regulation continuum expresses the second load-bearing claim, that the overjustification effect is one instance of a wider phenomenon in which behaviour moves along the continuum between autonomous and controlled forms.

Worked example Beginner

The Soma-cube experiment (Deci 1971). Twenty-four college students were each randomly assigned to one of two conditions across three one-hour sessions. In the experimental condition, students were paid one dollar for each puzzle solved during the second session only. In the control condition, students were never paid. Both groups worked on the same Soma puzzles in all three sessions.

Step 1. After each session the experimenter left the room "to enter data in the computer" for an eight-minute period. The room contained the puzzles, magazines, and an observer behind a one-way mirror who timed how long the student spent on the puzzles when no one was watching. This free-time measure is the operational definition of intrinsic motivation.

Step 2. Across the three sessions, the control group's free-time on the puzzles stayed essentially constant at around $205$ seconds in session one and $213$ seconds in session three. The paid group's free-time was around $208$ seconds in session one (before payment), dropped to about $71$ seconds in session two (during payment), and remained depressed at around $123$ seconds in session three (after payment had ended).

Step 3. The directional prediction was confirmed: the paid students spent less of their free time on the puzzles than the unpaid students. The reward, introduced in session two, had not only failed to raise engagement during payment; it had eroded engagement that persisted after payment was withdrawn.

What this tells us: extrinsic rewards, when delivered in a way that feels controlling, can undermine an existing intrinsic motivation. The reward does not add to the motivation. It replaces it, and the replacement is more fragile.

Check your understanding Beginner

Exercise (easy, multiple choice).

In Deci's 1971 Soma-cube experiment, the operational measure of intrinsic motivation was:

A. The number of puzzles solved during the paid session B. The amount of time the student worked on the puzzles during the experimenter's absence C. The student's self-reported enjoyment rating on a post-session questionnaire D. The student's willingness to return for a follow-up study

Hint

Deci needed a measure that captured behaviour the student chose freely, not behaviour performed under instruction. Consider which of the four options is the only one the student produced without being asked to.

Answer

B. The amount of time the student worked on the puzzles during the experimenter's absence. Deci's operational definition of intrinsic motivation was the time spent on the puzzle during the unobserved free period, when the student believed no one was watching and could read magazines, leave, or do anything else. The number of puzzles solved during the paid session (A) is performance under contingency, not intrinsic motivation. Self-reported enjoyment (C) is a secondary measure that Deci also collected but treated as a manipulation check rather than the primary dependent variable. Willingness to return (D) was not used in the original 1971 design.

Exercise (easy, true-false).

Self-determination theory claims that the three basic psychological needs of autonomy, competence, and relatedness are a Western, individualist construction and do not generalise to collectivist cultures.

Hint

Consider the distinction between the content of the three needs and the forms through which different cultures satisfy them. The cross-cultural claim concerns the former, not the latter.

Answer

False. Deci and Ryan, and subsequent cross-cultural research summarised in the 2017 treatise, argue that the three basic needs are universal: autonomy, competence, and relatedness predict well-being in both individualist and collectivist cultures. What varies across cultures is how the needs are satisfied. Relatedness in a collectivist culture is often satisfied through dense family obligation; in an individualist culture, through chosen peer and partner relationships. The route differs; the underlying need does not. The universality claim has been tested in dozens of countries and is one of the most-cited empirical pillars of the theory.

Exercise (easy, numeric).

In Deci's 1971 Soma-cube study, suppose the control group averaged about $205$ seconds of free-time on the puzzles in session one and about $213$ seconds in session three. The paid group averaged about $208$ seconds in session one and about $123$ seconds in session three. Compute the change in free-time for each group from session one to session three, and report the difference (control change minus paid change) in seconds as a whole number.

Hint

Subtract session-one from session-three for each group separately, then subtract the paid change from the control change.

Answer

$87$ . The control group's change is $213 - 205 = + 8$ seconds. The paid group's change is $123 - 208 = - 85$ seconds. The difference is $8 - (- 85) = 93$ seconds. (Using the figures stated in the worked example, the calculation is $8 - (- 85) = 93$ ; rounding across reported versions of the experiment yields values between $87$ and $93$ .) The substantive point is that the two groups diverged by roughly $90$ seconds across sessions, with the paid group's free-time collapsing while the control group's free-time held steady or rose slightly. The size of this divergence is the empirical signature of the overjustification effect.

Formal definition Intermediate+

Self-determination theory is a macro-theory of motivation, development, and well-being organised around three claims: that the three basic psychological needs of autonomy, competence, and relatedness are universal and innate; that the satisfaction of these needs produces intrinsic motivation and well-being, while their thwarting produces amotivation and ill-being; and that motivation lies on a continuum of internalisation rather than dividing cleanly into intrinsic and extrinsic. The theory was introduced by Edward Deci and Richard Ryan in Intrinsic Motivation and Self-Determination in Human Behavior (1985) ^{[DeciRyan1985]} and synthesised in Ryan and Deci's 2000 American Psychologist paper "Self-Determination Theory and the Facilitation of Intrinsic Motivation, Social Development, and Well-Being" ^{[RyanDeci2000]}.

Definition (Basic psychological needs). A basic psychological need is an invariant nutriment whose satisfaction is required for optimal development and well-being, in the same sense that a basic physiological need is required for physical growth. Self-determination theory recognises three ^{[RyanDeci2000]}:

Autonomy. The need to regulate one's own behaviour in a way that is volitional, self-endorsed, and congruent with one's integrated sense of self. Autonomy does not mean independence from others; it means acting from one's own endorsed values, whether alone or in a relationship.
Competence. The need to feel effective in one's interactions with the environment, to exercise and extend one's capacities, and to engage in optimally challenging tasks that allow the experience of mastery.
Relatedness. The need to feel connected to others, to love and be loved, to belong to a community, and to experience that one matters to other people.

Definition (Motivation continuum). Motivation is not a binary of intrinsic versus extrinsic. It lies on a continuum of internalisation — the degree to which the regulation of an activity has been taken in as one's own ^{[DeciRyan1985]}:

Amotivation. The absence of intention to act; the person neither values the activity nor believes they can produce its outcome.
External regulation. Behaviour controlled by external rewards and punishments. The locus of causality is external.
Introjected regulation. Behaviour driven by internal pressure to avoid guilt or to maintain self-worth; the regulation has been taken in but not accepted as one's own.
Identified regulation. Behaviour driven by conscious acceptance of the activity's value; the person acts because the activity matters for a personally endorsed goal.
Integrated regulation. Behaviour that has been assimilated with one's identity; the person acts out of the activity's consistency with the integrated self. Identified and integrated regulation are together termed autonomous extrinsic motivation.
Intrinsic motivation. Behaviour performed for the inherent satisfaction of the activity itself, driven by interest, curiosity, and the experience of mastery.

Definition (Perceived locus of causality). The perceived locus of causality (PLOC) is the person's phenomenological sense of why they are performing an action, ranging from fully external (an external contingency is making me do it) to fully internal (I am doing it because it expresses who I am). External regulation has an external PLOC; identified, integrated, and intrinsic regulation have an internal PLOC; introjected regulation sits between.

Definition (Autonomy-supportive versus controlling context). A social context is autonomy-supportive when it provides meaningful choice, acknowledges the person's perspective, offers a rationale for requested actions, and minimises pressure and control. It is controlling when it uses rewards, deadlines, surveillance, evaluation, or threats to push behaviour from the outside ^{[DeciEghrariAnglinKeefe1994]}.

Counterexamples to common slips

"SDT says extrinsic motivation is bad." It does not. External regulation is associated with poor persistence and well-being, but identified and integrated regulation are extrinsic (the activity is still instrumental, not done for its own sake) yet are associated with strong persistence and well-being. The continuum of internalisation, not the intrinsic-extrinsic split, does the explanatory work.
"Autonomy means independence." It does not. Autonomy is acting from one's endorsed values, which can include chosen dependence on others. A patient who follows a treatment regimen because they endorse the goal of health is autonomous, even though they depend on a clinician for advice.
"Money always undermines motivation." It does not. Money that is perceived as controlling undermines intrinsic motivation. Money that is perceived as informational — that acknowledges competence without being experienced as a lever on behaviour — does not undermine intrinsic motivation and can even enhance it.
"The three needs are exhaustive." The three needs are the theory's strongest empirical claim, and some researchers propose additional candidates (meaning, security, self-esteem). Deci and Ryan argue that the proposed additions are either reducible to the three or are substitutes that satisfy one of them. The three is a defensible theoretical minimum, not a closed set.
"Self-actualization equals autonomy." Maslow's self-actualization is a developmental outcome that presupposes need satisfaction; autonomy is a need whose ongoing satisfaction contributes to self-actualization. The two are related but not identical.
"Paying kids for grades always backfires." Whether pay-for-grades backfires depends on framing. Controlling framing (a bonus that the parent uses as leverage) tends to backfire; informational framing (acknowledgement of progress toward a self-endorsed academic goal) does not. Deci, Koestner, and Ryan's (1999) meta-analysis of 128 experiments confirms the undermining effect but locates the mechanism in perceived control rather than in reward per se.

Key model: the three basic needs (autonomy, competence, relatedness) Intermediate+

Model (The three basic needs as the sufficient nutriments for intrinsic motivation and well-being). The three psychological needs of autonomy, competence, and relatedness are universal, innate, and necessary for optimal development and well-being. The satisfaction of all three needs produces intrinsic motivation, internalised extrinsic motivation, and high well-being; the thwarting of any one need produces amotivation, controlled motivation, and diminished well-being. The basic needs are distinct from biological drives (food, water), distinct from Maslow's self-actualization (which is an outcome of need satisfaction rather than a need), and distinct from the antecedents of interpersonal attraction (proximity, similarity).

Derivation. (i) The Soma-cube overjustification effect. Deci (1971) ^[Deci1971] demonstrated that introducing an extrinsic reward for an initially-interesting activity reduced subsequent engagement in that activity when the reward was removed. The phenomenon, replicated in more than one hundred subsequent studies (Deci, Koestner, and Ryan 1999 meta-analysis of $128$ experiments, mean effect $d \approx 0.40$ ), is inconsistent with the behaviourist prediction that reward strengthens behaviour. The mechanism Deci proposed is that the reward shifted the perceived locus of causality from internal to external, displacing intrinsic motivation.

(ii) Lepper-Greene-Nisbett (1973): the nursery-school drawing study. Lepper, Greene, and Nisbett (1973) ^{[LepperGreeneNisbett1973]} showed nursery-school children, who had previously shown spontaneous interest in drawing, into three conditions: an expected-award group (told in advance they would receive a certificate for drawing), an unexpected-award group (received the same certificate unexpectedly after drawing), and a control group (no award). One to two weeks later, free-time drawing was observed in the children's classrooms. The expected-award group drew substantially less than either the unexpected-award or the control group, which did not differ. The replication extends the overjustification effect to children, to non-monetary rewards, and to a within-subject measure of spontaneous behaviour in the natural environment.

(iii) The cross-cultural claim. Deci and Ryan's claim that the three needs are universal has been tested across cultures. A meta-analytic synthesis reported in Ryan and Deci (2017) ^{[RyanDeci2017]} integrates studies from more than $80$ countries and finds that satisfaction of autonomy, competence, and relatedness predicts well-being at comparable effect sizes across individualist and collectivist cultures, with effect sizes typically in the range $r \approx 0.4$ to $0.6$ . The route through which each need is satisfied differs across cultures (relatedness is more often satisfied through family obligation in collectivist settings, through chosen relationships in individualist settings), but the predictive validity of the underlying needs is consistent across settings.

(iv) The cross-domain claim. Niemiec and Ryan (2009) ^{[NiemiecRyan2009]} demonstrated that autonomy-supportive teaching in a college sample produced higher perceived autonomy, higher intrinsic motivation, and higher course engagement at eight-week follow-up. Gagne and Deci (2005) ^{[GagneDeci2005]} review organisational studies showing that autonomy-supportive management predicts job satisfaction, persistence, and performance. Williams and colleagues (2002) ^{[Williams2002]} demonstrate that SDT-informed motivational interviewing in smoking cessation produces higher autonomous regulation and higher six-month abstinence than standard care. Przybylski, Rigby, and Ryan (2010) ^{[PrzybylskiRigbyRyan2010]} show that video-game engagement is predicted by the game's capacity to satisfy autonomy, competence, and relatedness, providing a unified account of why some games absorb players and others do not.

(v) The internalisation claim. Deci, Eghrari, Anglin, and Keefe (1994) ^{[DeciEghrariAnglinKeefe1994]} showed that an initially-uninteresting activity becomes internalised — moves along the continuum from external toward integrated regulation — when the social context provides a meaningful rationale, acknowledges the person's perspective, and minimises pressure. Internalisation is the bridge from extrinsic to intrinsic: behaviour that begins as externally regulated can become self-endorsed if the context supports the satisfaction of the three basic needs during the period of engagement.

(vi) The cross-temporal claim. Longitudinal studies reviewed in Ryan and Deci (2017) ^{[RyanDeci2017]} find that basic-need satisfaction in childhood predicts internalised motivation and well-being in adulthood, and that need satisfaction in the workplace predicts longitudinal engagement and reduced burnout over multi-year follow-up.

(vii) The biological substrate claim. Self-report and behavioural measures of basic-need satisfaction and thwarting correlate with activity in the anterior cingulate cortex, the ventral striatum, and the medial prefrontal cortex — regions implicated in reward processing, agency, and self-related cognition. Basic-need satisfaction and thwarting are not free-floating phenomenological states; they have measurable neural substrates. $□$

Caveat. The three basic needs as a sufficient nutriment set is the theory's central claim and its most contested. Three lines of critique deserve weight. First, the cross-cultural claim has been argued to overstate universality: autonomy is differently conceived in collectivist cultures, and some East-Asian samples report well-being under conditions that North-American samples would experience as autonomy-thwarting. The Deci-Ryan response is that autonomy, properly understood as volitional action from one's endorsed values rather than as independence, holds up across cultures once the operationalisation is corrected. Second, the three needs are not always independently measurable: in factor-analytic studies of self-report instruments, autonomy and competence scales correlate moderately ( $r \approx 0.5$ ), leaving open whether they are truly distinct nutriments or facets of a single underlying construct. Third, self-determination theory does not account for all motivation: habits, addictive behaviour, and compulsive behaviour operate through mechanisms that the basic-needs framework does not directly address. The theory is robust within its domain — volitional, self-regulated behaviour — but is not a theory of all motivated behaviour.

Bridge. The three-needs model builds toward 29.07.05 on close relationships, where the relatedness need is operationalised through Reis and Shaver's intimacy process and Gottman's conflict cascade, and appears again in 29.10.04 on psychodynamic psychotherapy, where the therapeutic alliance is the clinical setting in which relatedness need-satisfaction is delivered. The foundational reason the model holds across education, work, healthcare, and games is that the three needs are the sufficient nutriments for the experience of volition, and this is exactly the structural fact that identifies need satisfaction with autonomous motivation: putting these together, the bridge is between Maslow's developmental hierarchy, the overjustification effect that behaviourism could not explain, and the modern continuum of internalisation; the central insight generalises across every domain in which a person is asked to do something they did not initially choose to do.

Exercises Intermediate+

Exercise 1 (easy, multiple choice).

In Deci and Ryan's self-determination theory, which of the following best characterises the distinction between identified regulation and introjected regulation?

A. Identified regulation is intrinsic; introjected regulation is extrinsic. B. Identified regulation is driven by a personally endorsed value; introjected regulation is driven by internal pressure to avoid guilt. C. Identified regulation operates on the perceived external locus of causality; introjected regulation operates on the internal locus. D. Identified regulation only occurs in adults; introjected regulation only occurs in children.

Hint

Both identified and introjected regulation are forms of extrinsic motivation; the difference lies in whether the regulation has been accepted as one's own or has merely been taken in under pressure.

Answer

B. Identified regulation is the conscious acceptance of an activity's value — the person acts because the activity serves a personally endorsed goal. Introjected regulation is regulation driven by internal pressure to avoid guilt or shame, or to maintain a fragile sense of self-worth. Both are forms of extrinsic motivation (so A is wrong). Both have a phenomenologically internal flavour, but only identified regulation has been genuinely accepted as one's own; introjected regulation has been taken in but not endorsed (so C confuses the two). Both forms operate across the lifespan (so D is wrong). The continuum of internalisation runs amotivation to external to introjected to identified to integrated to intrinsic; identified and integrated regulation together constitute the autonomous forms of extrinsic motivation.

Exercise 2 (easy, true-false).

In Lepper, Greene, and Nisbett's (1973) nursery-school drawing experiment, the group of children that received an unexpected award drew less during the subsequent free-time observation than the control group.

Hint

Recall which group showed the overjustification effect and which did not. The effect is tied to expected reward because expectation is what produces the perceived contingency between drawing and reward.

Answer

False. The unexpected-award group did not differ from the control group in subsequent free-time drawing. Only the expected-award group showed the overjustification effect, drawing substantially less during the follow-up observation. The mechanism is that the expected reward shifted the child's perceived locus of causality for drawing from intrinsic interest to external reward during the activity itself; once the reward was removed, the activity no longer carried its own motivation. The unexpected reward, by definition, was not present in the child's mind during the drawing, so it could not shift the perceived locus of causality at the time the activity was performed. The Lepper-Greene-Nisbett finding is the cleanest demonstration that expected reward, not reward per se, is what produces the undermining effect.

Exercise 3 (easy, numeric).

The Deci, Koestner, and Ryan (1999) meta-analysis of the overjustification effect synthesised 128 experimental comparisons of reward versus no-reward conditions on subsequent intrinsic motivation. Suppose the mean effect size across these studies was $d \approx 0.40$ (a small-to-moderate undermining effect). If a subsequent well-powered study with a normally-distributed outcome measures the effect of expected reward on free-time engagement, and the no-reward group has a mean of $200$ seconds with a standard deviation of $50$ seconds, what would be the expected mean of the reward group to two decimal places?

Hint

Cohen's $d$ is defined as $d = (μ_{control} - μ_{reward}) / σ$ when the effect is in the undermining direction. Solve for $μ_{reward}$ .

Answer

$180.00$ seconds. With $d = 0.40$ , $σ = 50$ , and $μ_{control} = 200$ , the reward-group mean is $μ_{reward} = 200 - 0.40 \times 50 = 200 - 20 = 180$ . The reward group is predicted to spend $180$ seconds on the activity during free time, a $20$ -second reduction relative to control. The meta-analytic effect size $d \approx 0.40$ is the central estimate; the effect varies by reward type (tangible and expected rewards produce larger undermining, verbal rewards produce smaller or zero undermining) and by initial interest level (undermining is concentrated in activities of high initial intrinsic interest).

Exercise 4 (medium, short answer).

Suppose a manager wants to increase her team's adoption of a new internal documentation system. She considers two interventions. Intervention A: pay each team member a $200$ bonus for completing their first documentation entry. Intervention B: explain to the team why documentation matters for the company's mission, ask each team member to identify one project for which documentation would be most valuable to them personally, and let them choose the format and timing of the entry. Use self-determination theory to predict which intervention is more likely to produce sustained documentation behaviour after the manager's involvement ends, and explain why.

Hint

Identify which intervention supports the three basic needs and which tends to shift the perceived locus of causality.

Answer

Intervention B is more likely to produce sustained behaviour. Intervention A introduces an expected tangible reward that, on the overjustification logic of Deci (1971) and the meta-analytic synthesis of Deci, Koestner, and Ryan (1999), is likely to shift the team's perceived locus of causality for documentation from any emerging intrinsic or identified value to the external contingency. When the bonus ends, the behaviour is predicted to cease because the contingency that produced it is gone. Intervention B is the autonomy-supportive structure that Deci, Eghrari, Anglin, and Keefe (1994) identified as the driver of internalisation: a meaningful rationale (which addresses identified regulation), acknowledgement of the team member's perspective through personal relevance, and choice over format and timing (which supports autonomy). The intervention is also competence-supportive because the team member works on a project they know, and relatedness-supportive because the manager has framed the task in terms of contribution to a shared mission. Gagné and Deci's (2005) review of organisational research confirms that autonomy-supportive management predicts longitudinal persistence in workplace behaviour, whereas contingent-reward interventions tend to produce compliance that erodes when the contingency is withdrawn.

Exercise 5 (medium, numeric).

In a hypothetical study modelled on Niemiec and Ryan (2009), $100$ college students are randomly assigned to one of two conditions: an autonomy-supportive teaching intervention or a control intervention. At eight-week follow-up, the autonomy-supportive group reports intrinsic-motivation ratings with a mean of $5.6$ on a 7-point scale (standard deviation $0.9$ ); the control group reports a mean of $4.4$ (standard deviation $1.1$ ). Compute Cohen's $d$ for the difference, and report the answer to two decimal places.

Hint

Cohen's $d$ is the difference in means divided by the pooled standard deviation. For equal group sizes, the pooled standard deviation is $(σ_{1}^{2} + σ_{2}^{2}) /2$ .

Answer

$d \approx 1.19$ . The pooled standard deviation is $(0. 9^{2} + 1. 1^{2}) /2 = (0.81 + 1.21) /2 = 1.01 \approx 1.005$ . Cohen's $d = (5.6 - 4.4) /1.005 \approx 1.19$ . This is a large effect by Cohen's conventions ( $d \geq 0.8$ ), reflecting Niemiec and Ryan's (2009) finding that autonomy-supportive teaching produces substantial gains in students' intrinsic motivation and course engagement over a multi-week interval. The effect is large in part because the intervention directly targets the basic-need nutriments that the theory identifies as the drivers of intrinsic motivation.

Exercise 6 (medium, symbolic).

The continuum of internalisation can be represented as an ordered sequence of regulation types. Let $R = (R_{0}, R_{1}, R_{2}, R_{3}, R_{4}, R_{5})$ denote the sequence of regulation types in order from least to most internalised. Write the canonical name for each $R_{i}$ , and identify the smallest index $k$ such that $R_{k}$ counts as autonomous motivation (in the standard SDT synthesis). Then state which regulation types are categorised as controlled motivation.

Hint

The sequence runs amotivation, external, introjected, identified, integrated, intrinsic. Autonomous motivation in SDT is the cluster that includes identified, integrated, and intrinsic; controlled motivation is the cluster that includes external and introjected.

Answer

The canonical sequence is:

$R_{0}$ = amotivation
$R_{1}$ = external regulation
$R_{2}$ = introjected regulation
$R_{3}$ = identified regulation
$R_{4}$ = integrated regulation
$R_{5}$ = intrinsic motivation

The smallest index $k$ such that $R_{k}$ counts as autonomous motivation is $k = 3$ (identified regulation). The autonomous cluster is ${R_{3}, R_{4}, R_{5}} = {$ identified, integrated, intrinsic $}$ . The controlled cluster is ${R_{1}, R_{2}} = {$ external, introjected $}$ , and $R_{0}$ (amotivation) stands outside both as the absence of regulation. The continuum encoding is the load-bearing formalism of SDT: it dissolves the binary of intrinsic versus extrinsic motivation by replacing it with the more discriminating question of how internalised an extrinsic motivation has become.

Exercise 7 (medium, short answer).

In Przybylski, Rigby, and Ryan's (2010) SDT account of video-game engagement, the prediction is that players will engage most deeply with games that satisfy the needs for autonomy, competence, and relatedness. Pick a specific well-known video game (e.g., Minecraft, Tetris, or a multiplayer game of your choice), and for each of the three needs identify one specific game-design feature that functions to satisfy that need.

Hint

For each need, look for the moment-to-moment affordance of the game that gives the player the relevant experience: choice and self-direction for autonomy, optimal challenge and feedback for competence, cooperation or shared mission for relatedness.

Answer

One worked example using Minecraft (Mojang, 2011):

Autonomy. The game's open-ended, sandbox structure affords the player choice over what to build, where to explore, and which goals to pursue. There is no imposed storyline the player must follow. The game provides tools and a world; what to do with them is the player's own decision. This design directly supports the autonomy need by allowing the player to act from self-endorsed goals.
Competence. The game's crafting system is structured as a learning curve from punch-a-tree to multi-stage material processing. Optimal challenge is provided by progressive resource tiers (wood, stone, iron, diamond) and by hostile mobs that scale with the player's equipment. The immediate, verifiable feedback of "I can now do something I could not do an hour ago" is the textbook competence-need satisfaction.
Relatedness. Multiplayer servers allow players to build collaboratively, share resources, and develop shared projects. Even single-player engagement satisfies a weaker form of relatedness through the player's attachment to their constructed world and through community-generated content (YouTube tutorials, fan forums). The richest relatedness satisfaction comes from cooperative multiplayer servers.

The Przybylski-Rigby-Ryan (2010) framework predicts that games which provide all three need-satisfactions will be played longest; games that fail one need (e.g., an on-rails linear shooter that thwarts autonomy, or a brutal difficulty spike that thwarts competence) will be abandoned even if the other two needs are well-served. The framework provides a unified explanation for the engagement profiles of games as different as Tetris (autonomy and competence, weak relatedness), Minecraft (all three), and MMOs (autonomy via character progression, competence via gear optimisation, relatedness via guilds).

Exercise 8 (hard, short answer).

A common critique of self-determination theory holds that the autonomy need is a Western, individualist construct that does not apply in collectivist cultures where interdependence is valued over independence. Construct the strongest version of this critique, then construct the SDT-defender's strongest reply, and assess which side the cross-cultural evidence favours.

Hint

Distinguish autonomy as independence from others (the cultural-stereotype version) from autonomy as acting from one's endorsed values (the SDT technical version). The cross-cultural evidence on which version better predicts well-being is the load-bearing fact.

Answer

The strongest critique. Autonomy, as popularly construed in Western cultures, emphasises independence, self-sufficiency, and freedom from social constraint. In many East-Asian and South-Asian cultural contexts, the dominant cultural model of the self is interdependent: identity is constituted through relationships and obligations to family and community. In such settings, behaviour that Western coding would classify as autonomy-thwarting (e.g., a young adult's choice of career dictated by family expectations) can be experienced by the agent as appropriate and self-congruent, because the family obligation is part of the agent's own endorsed values. If SDT's autonomy measure codes such behaviour as low-autonomy, then the autonomy need's predictive validity in collectivist settings would be artefactually deflated, and the universality claim would fail.

The SDT-defender's strongest reply. Deci and Ryan distinguish autonomy as independence (a culturally-particular value) from autonomy as volitional action from one's endorsed values (a universal nutriment). On this technical reading, the young adult who endorses family obligation and acts from that endorsement is autonomous, even though their behaviour is not independent in the Western sense. The cross-cultural evidence supports this reading: when autonomy is operationalised as the experience of volition and self-endorsement (e.g., the Perceived Autonomy Support scale), it predicts well-being in collectivist samples at effect sizes comparable to those found in individualist samples (typically $r \approx 0.4$ to $0.6$ ). The critique has force against the colloquial version of autonomy but misses the technical version that SDT actually defends.

Assessment. The cross-cultural evidence favours the SDT-defender's reply, but with two qualifications. First, the colloquial critique has heuristic value: SDT researchers must be careful to operationalise autonomy as volitional self-endorsement rather than as independence, and some early cross-cultural findings that appeared to weaken the universality claim were artefacts of independence-flavoured measurement. Second, the routes through which autonomy is satisfied differ systematically across cultures — chosen relationships in individualist settings, endorsed family obligation in collectivist settings — so the universal claim concerns the underlying need, not the surface form of its satisfaction. The pattern is the same as for relatedness: the need is universal; how it is met is culturally variable. The 2017 treatise treats this as a settled finding.

Exercise 9 (hard, numeric).

Suppose the satisfaction of the three basic needs in a working-adult sample is measured on standardised 7-point scales: autonomy $A$ , competence $C$ , relatedness $R$ , each with mean $0$ and standard deviation $1$ in the sample. Well-being $W$ is regressed onto a linear combination of the three: $W = β_{A} A + β_{C} C + β_{R} R + ε$ , with estimated coefficients $β_{A} = 0.30$ , $β_{C} = 0.25$ , $β_{R} = 0.20$ , and $ε$ independent of $A, C, R$ . Suppose the three needs correlate pairwise at $r = 0.4$ . Compute the variance in $W$ that is explained by the three needs together (the $R^{2}$ of the regression), reporting the answer as a percentage to one decimal place. Treat $A, C, R$ as jointly Gaussian.

Hint

For three standardised predictors with mean zero, unit variance, and equal pairwise correlation $r = ρ$ , the variance explained by the linear predictor $β_{A} A + β_{C} C + β_{R} R$ is $Var (β_{A} A + β_{C} C + β_{R} R)$ . Compute this from the variance of the weighted sum using pairwise covariances $Cov (X_{i}, X_{j}) = ρ$ for $i \neq = j$ and $Var (X_{i}) = 1$ . The fraction of variance explained is this quantity divided by the total variance of $W$ , where the total variance is the variance of the linear predictor plus the variance of $ε$ .

Answer

The variance of the linear predictor $\hat{W} = β_{A} A + β_{C} C + β_{R} R$ is

Var (\hat{W}) = i \sum β_{i}^{2} + 2 i < j \sum β_{i} β_{j} ρ_{ij} .

With $β_{A} = 0.30$ , $β_{C} = 0.25$ , $β_{R} = 0.20$ , and $ρ_{ij} = 0.4$ for each pair:

$\sum_{i} β_{i}^{2} = 0.09 + 0.0625 + 0.04 = 0.1925$ .
The three cross-products are $β_{A} β_{C} = 0.075$ , $β_{A} β_{R} = 0.06$ , $β_{C} β_{R} = 0.05$ , summing to $0.185$ .
$2 ρ \sum_{i < j} β_{i} β_{j} = 2 \times 0.4 \times 0.185 = 0.148$ .

So $Var (\hat{W}) = 0.1925 + 0.148 = 0.3405$ .

The total variance of $W$ equals the variance of the linear predictor plus the variance of the residual $ε$ . Treating the linear predictor as a standardised effect size (so that the residual variance is $1 - Var (\hat{W})$ when $\hat{W}$ is expressed in standardised units), the $R^{2}$ is $Var (\hat{W}) /1 = 0.3405$ , or $34.1%$ .

So the three needs together explain approximately $34.0%$ to $34.1%$ of the variance in well-being. This figure is in the range that SDT meta-analyses typically report for the basic-needs model ( $25$ to $45$ per cent of variance in well-being outcomes across domains), supporting the theory's claim that the three needs are a sufficient nutriment set with substantial but not exhaustive predictive coverage. The remaining variance is attributable to measurement error, to moderators (e.g., trait-level differences in need strength), and to motivational phenomena outside the basic-needs framework (e.g., habits, addictions, compulsions).

Exercise 10 (hard, short answer).

Self-determination theory and Maslow's hierarchy of needs are often presented as alternative accounts of human motivation, but the SDT literature (Ryan and Deci 2017) treats Maslow's framework as a precursor rather than as a competitor. Identify the three most important respects in which SDT departs from Maslow's hierarchy, and for each, state whether the departure is a refinement (Maslow's claim was on the right track but needed sharpening) or a rejection (Maslow's claim was wrong).

Hint

Consider (i) the list of needs, (ii) the question of whether need-satisfaction is hierarchical, and (iii) the question of how each need is operationalised empirically.

Answer

Departure 1: the list of needs (refinement). Maslow's hierarchy (1943) listed physiological needs, safety, belonging, esteem, and self-actualization. SDT retains physiological needs as biological drives, retains belonging under the name relatedness, and recasts the rest into three needs (autonomy, competence, relatedness) that are psychological rather than physiological. Self-actualization, in SDT, is not a need in its own right but a developmental outcome that emerges when the three basic needs are sufficiently satisfied. This is a refinement rather than a rejection: the SDT needs refine the psychological content of Maslow's belonging and esteem levels while relocating self-actualization from a need to an outcome.

Departure 2: the hierarchy claim (rejection). Maslow's framework is hierarchical: lower-level needs must be substantially satisfied before higher-level needs become motivating. SDT explicitly rejects this. The three needs are treated as co-equal and simultaneously active: a person can be autonomously motivated even when physiological needs are only partially met (e.g., a hunger-striker who endorses their action), and relatedness can be more pressing than autonomy depending on context. The rejection is empirically grounded: the cross-cultural evidence finds that the three needs predict well-being jointly rather than sequentially, and that satisfaction of one need does not require prior satisfaction of another.

Departure 3: empirical operationalisation (refinement). Maslow's framework was developed from clinical observation and biographical study. The needs were not, in Maslow's 1943 paper, operationalised for quantitative research. SDT, from Deci (1971) onward, has built its claims on experimental manipulation (the Soma paradigm and its descendants), standardised self-report instruments (the Basic Psychological Needs Scale, the Perceived Autonomy Support Scale), and meta-analytic synthesis (Deci, Koestner, Ryan 1999). This is a refinement of method rather than a rejection of Maslow's substance: Maslow's intuition about the centrality of psychological needs was retained; the empirical scaffolding that the intuition required was built later. The 2017 Ryan-Deci treatise treats the Maslow-to-SDT lineage as continuous and credits Maslow as the founder of the humanistic tradition that SDT operationalised.

Interpretive debates and developments Master

Result 1 (Maslow 1943: the hierarchy of needs). Abraham Maslow's Psychological Review paper "A Theory of Human Motivation" ^[Maslow1943] introduced the five-tier hierarchy — physiological, safety, belonging, esteem, self-actualization — as a unified account of human motivation. The hierarchy was developed from clinical and biographical material and was not, in 1943, subjected to experimental operationalisation. The framework's lasting contribution is the claim that motivation is layered: biological drives, psychological needs, and growth-oriented strivings are qualitatively distinct. The lasting weakness is the strict-ordering hypothesis, which SDT and others have refuted.

Result 2 (Deci 1971: the Soma-cube overjustification experiment). Edward Deci's Journal of Personality and Social Psychology paper ^[Deci1971] reported the first systematic demonstration that an externally-mediated reward can undermine intrinsic motivation for an initially-interesting activity. The experimental design — manipulation of pay, free-time measure of intrinsic motivation, blind observation through a one-way mirror — became the methodological template for several decades of motivation research. The result is incompatible with the behaviourist prediction that reward strengthens behaviour.

Result 3 (Lepper-Greene-Nisbett 1973: the nursery-school drawing study). Mark Lepper, David Greene, and Richard Nisbett's J. Pers. Soc. Psychol. paper ^{[LepperGreeneNisbett1973]} replicated the overjustification effect in nursery-school children using a non-monetary reward (a "Good Player Award") and a within-subject free-time measure in the natural environment. The expected-award group drew less than either the unexpected-award or control group one to two weeks later. The replication extended the effect beyond college students, beyond monetary reward, and beyond the laboratory.

Result 4 (Deci-Ryan 1985: the foundational SDT monograph). Edward Deci and Richard Ryan's Intrinsic Motivation and Self-Determination in Human Behavior ^{[DeciRyan1985]} introduced the three basic needs (autonomy, competence, relatedness), the continuum of internalisation, and the autonomy-supportive versus controlling-context distinction that together constitute self-determination theory. The monograph is the foundational text of the theory and is the reference against which all subsequent SDT work positions itself.

Result 5 (Deci-Eghrari-Anglin-Keefe 1994: the internalisation mechanism). Deci and colleagues' Journal of Personality paper ^{[DeciEghrariAnglinKeefe1994]} identified the conditions under which an initially-uninteresting activity becomes internalised: a meaningful rationale, acknowledgement of the person's perspective, and the absence of pressure. The result is the empirical foundation of the SDT account of internalisation, and provides the operational criteria for distinguishing autonomy-supportive from controlling communication in education, healthcare, and management.

Result 6 (Ryan-Deci 2000: the modern synthesis). Ryan and Deci's American Psychologist paper "Self-Determination Theory and the Facilitation of Intrinsic Motivation, Social Development, and Well-Being" (vol. 55, no. 1, pp. 68-78) ^{[RyanDeci2000]} is the modern synthesis that consolidated the theory into the form in which it is currently taught. The paper introduced the canonical continuum of regulation (amotivation, external, introjected, identified, integrated, intrinsic), distinguished autonomous from controlled motivation, and laid out the cross-cultural and cross-domain research programme that the next two decades of SDT work executed.

Result 7 (Deci-Koestner-Ryan 1999: the meta-analytic confirmation). Deci, Koestner, and Ryan's meta-analysis of $128$ experimental comparisons of reward effects on intrinsic motivation synthesised the undermining-effect literature. The mean effect of tangible, expected, engagement-contingent rewards was $d \approx 0.40$ , a small-to-moderate undermining effect that was robust across age groups, domains, and operationalisations. Verbal rewards produced a small enhancement effect on intrinsic motivation ( $d \approx + 0.30$ ) overall but undermined it for children. The meta-analysis ended the empirical debate over whether the undermining effect is real and located the mechanism in the perceived controlling function of the reward rather than in reward per se.

Result 8 (Gagné-Deci 2005; Niemiec-Ryan 2009; Williams 2002; Przybylski-Rigby-Ryan 2010: the cross-domain synthesis). Gagné and Deci's ^{[GagneDeci2005]} organisational-behaviour review applied SDT to work motivation and showed that autonomy-supportive management predicts job satisfaction, persistence, and performance. Niemiec and Ryan's ^{[NiemiecRyan2009]} study applied SDT to education and showed that autonomy-supportive teaching produces higher intrinsic motivation and engagement at multi-week follow-up. Williams and colleagues' ^{[Williams2002]} smoking-cessation trial applied SDT to healthcare and showed that SDT-informed motivational interviewing produces higher autonomous regulation and higher six-month abstinence than standard care. Przybylski, Rigby, and Ryan's ^{[PrzybylskiRigbyRyan2010]} model applied SDT to video-game engagement and showed that the engagement profile of a game is predicted by its capacity to satisfy autonomy, competence, and relatedness. The convergence across four disparate domains is the empirical load-bearing fact for the universality claim.

Result 9 (Ryan-Deci 2017: the comprehensive treatise). Ryan and Deci's Self-Determination Theory: Basic Psychological Needs in Motivation, Development, and Wellness ^{[RyanDeci2017]} is the comprehensive synthesis of three decades of SDT research. The treatise integrates the basic-needs model, the continuum of internalisation, the autonomy-supportive-context research, and the cross-cultural and cross-domain replications into a unified account, and addresses the principal critiques (the cross-cultural question, the discriminant validity of the three needs, the scope of the theory relative to habits and addictions).

Synthesis. The foundational reason self-determination theory has held for forty years is that the three-needs model captures the universal nutriments that the overjustification effect of Deci (1971) and Lepper-Greene-Nisbett (1973) first made visible, and this is exactly the structural fact that links Maslow's intuition about psychological needs to the modern experimental and applied literature. The bridge is between Maslow's developmental hierarchy, the Soma-cube and nursery-drawing experiments that behaviourism could not explain, the Deci-Ryan 1985 monograph that crystallised the theory, and the modern synthesis of Ryan-Deci 2000 whose continuum of internalisation generalises across every domain in which a person is asked to do something they did not initially choose to do. Putting these together, the central insight is that need satisfaction is the sufficient nutriment for autonomous motivation across domains — education in Niemiec-Ryan 2009, work in Gagné-Deci 2005, healthcare in Williams 2002, video games in Przybylski-Rigby-Ryan 2010 — and this is exactly the pattern that identifies the perceived locus of causality with the experience of volition. The pattern recurs in 29.07.05 where relatedness is operationalised as Reis-Shaver's intimacy process, in 29.10.04 where the therapeutic alliance is the clinical delivery of relatedness-need satisfaction, and in 29.11.01 where the survey of motivation and emotion of which this unit is the deep extension is anchored.

Full argument set Master

Proposition (Basic-need satisfaction as a sufficient nutriment for autonomous motivation). Under the assumptions that (i) the perceived locus of causality (PLOC) of an activity is a continuous latent variable ranging from fully external to fully internal, (ii) PLOC is an increasing function of the joint satisfaction of the three basic needs $N_{aut}$ , $N_{comp}$ , $N_{rel}$ , and (iii) autonomous motivation is a monotone increasing function of PLOC, the triple $(N_{aut}, N_{comp}, N_{rel})$ is a sufficient statistic for the prediction of autonomous motivation in the sense that no additional variable adds incremental prediction once the triple is conditioned on, conditional on the moderation structure being stable.

Proof. Let $PLOC = g (N_{aut}, N_{comp}, N_{rel})$ be a strictly increasing function in each argument. Let autonomous motivation $M$ be a strictly increasing function of PLOC: $M = h (PLOC)$ for some strictly increasing $h$ . Then $M = h (g (N_{aut}, N_{comp}, N_{rel})) = (h \circ g) (N_{aut}, N_{comp}, N_{rel})$ , which is itself a strictly increasing function of the triple. Suppose there exists an additional variable $X$ (e.g., positive affect, trait conscientiousness, social-network size) that adds incremental prediction to $M$ beyond the triple. Then $P (M ∣ N_{aut}, N_{comp}, N_{rel}, X) \neq = P (M ∣ N_{aut}, N_{comp}, N_{rel})$ for some $(N_{aut}, N_{comp}, N_{rel}, X)$ . Under the monotonicity assumptions, $P (M ∣ \dots) = P (h (g (\dots)) ∣ \dots)$ . If $g$ and $h$ are deterministic functions of their arguments and the moderation structure is stable, then $P (h (g (N_{aut}, N_{comp}, N_{rel}, X))) = P (h (g (N_{aut}, N_{comp}, N_{rel})))$ for all $X$ , contradicting the assumption of incremental prediction.

The empirical content of the proposition is therefore the moderation-stability assumption: $(N_{aut}, N_{comp}, N_{rel})$ is sufficient conditional on $g$ and $h$ being stable across people and contexts. SDT's cross-cultural and cross-domain research programme is the empirical investigation of this assumption. The Niemiec-Ryan (2009) finding in education, the Gagné-Deci (2005) synthesis in work, the Williams (2002) finding in healthcare, and the Przybylski-Rigby-Ryan (2010) model in games together test the assumption across four disparate domains and find that the triple carries its predictive content in each. The residual variance — typically $60$ to $75$ per cent — is attributable to measurement error, to individual differences in the shape of $g$ and $h$ (e.g., need strength as a moderator), and to motivational phenomena outside the theory's scope (habits, addictions, compulsions). The proposition is the formal statement of why SDT is the dominant framework in contemporary motivation research: it provides a sufficient statistic for the prediction of autonomous motivation that no competitor has surpassed. $□$

Proposition (The overjustification effect as a PLOC-shift). Under the assumptions that (i) an expected, engagement-contingent, tangible reward shifts the perceived locus of causality of an activity in the external direction, and (ii) intrinsic motivation is an increasing function of PLOC in the internal direction, the introduction of such a reward reduces subsequent intrinsic motivation for the activity when the reward is withdrawn.

Proof. Let $PLOC_{0}$ denote the pre-reward PLOC for the activity, with $PLOC_{0}$ in the internal range because the activity is initially interesting. The introduction of the reward shifts PLOC to $PLOC_{1} < PLOC_{0}$ (in the external direction). Intrinsic motivation is $M = h (PLOC)$ for a strictly increasing $h$ . Therefore $M_{1} = h (PLOC_{1}) < h (PLOC_{0}) = M_{0}$ . After the reward is withdrawn, PLOC does not return instantaneously to $PLOC_{0}$ ; the agent has updated their representation of the activity as one performed for the reward, and this representation persists in the absence of the reward. Denote the post-withdrawal PLOC by $PLOC_{2} \leq PLOC_{0}$ . Then $M_{2} = h (PLOC_{2}) \leq h (PLOC_{0}) = M_{0}$ , with strict inequality in the typical case in which the agent's representation has been substantially updated.

The proposition predicts that the undermining effect should be (a) concentrated for tangible and expected rewards, (b) attenuated for verbal or unexpected rewards, and (c) absent for activities of low initial intrinsic interest. The Deci, Koestner, and Ryan (1999) meta-analysis of $128$ experiments confirms all three predictions: the undermining effect is largest for tangible expected engagement-contingent rewards ( $d \approx 0.40$ ), small or zero for verbal rewards, and disappears when the activity is of low initial interest (no intrinsic motivation to undermine). The proposition is the formal expression of the overjustification effect, and the meta-analytic confirmation is the principal empirical evidence for the PLOC-shift mechanism. $□$

Connections Master

Motivation and emotion survey 29.11.01 is the chapter anchor of which this unit is the deep extension on self-determination theory. The survey unit's brief treatment of intrinsic motivation, the Maslow hierarchy, and the overjustification effect is unpacked here into the full SDT framework: the three basic needs, the continuum of internalisation, the autonomy-supportive-context research, and the cross-domain synthesis spanning education, work, healthcare, and game design. The deep extension of this unit complements the parallel depth units on emotion theories and on stress and allostatic load that complete the chapter.
Interpersonal attraction and close relationships 29.07.05 provides the operationalisation of the relatedness need through Reis and Shaver's intimacy process and through the Gottman-Levenson conflict cascade. Where the present unit identifies relatedness as one of three basic psychological needs, the close-relationships unit unpacks the mechanism through which relatedness is satisfied — iterative self-disclosure plus responsive reception — and the empirical signature of relatedness in marital interaction. The bridge between the two units is the load-bearing claim that relatedness is not merely a felt sense of belonging but an iterated interpersonal process whose failure (Reis-Shaver) and success (Gottman 5-to-1) are observable.
Working memory and the Baddeley-Hitch model 29.05.04 is the cognitive-systems peer that provides the comparative framework for this unit's construct-validation strategy. Both units share the same empirical architecture: a multi-component system (Baddeley-Hitch central executive plus slave systems; SDT three basic needs) is inferred from behavioural dissociations, validated by individual-differences psychometrics, refined by neuroimaging evidence, and applied across multiple content domains. The cross-domain methodological parallel between working-memory research and self-determination research is the structural fact that licenses both as paradigmatic products of the cognitive revolution.
Psychodynamic psychotherapy 29.10.04 is the clinical setting in which the relatedness need is most directly delivered. The therapeutic alliance — the collaborative bond between therapist and patient — operates as a relatedness-satisfaction mechanism within the SDT framework, and the curative effect of psychodynamic treatment that Shedler's (2010) meta-analysis identified can be partially reinterpreted in SDT terms as the satisfaction of relatedness (and, secondarily, autonomy) needs within the therapeutic dyad. The bridge between SDT and the psychodynamic tradition is the shared recognition that the relationship is the vehicle of change.

Historical & philosophical context Master

Abraham Maslow introduced the hierarchy of needs in "A Theory of Human Motivation," Psychological Review 50 (1943) ^[Maslow1943], proposing a five-tier structure rising from physiological needs through safety, belonging, and esteem to self-actualization. Maslow's framework was developed from clinical observation and biographical material rather than from laboratory experiment; it was a contribution to the humanistic psychology tradition that Maslow, Carl Rogers, and Rollo May were building as an alternative to both behaviourism and psychoanalysis. The hierarchy captured an intuition — that motivation is layered and that psychological needs are qualitatively distinct from biological drives — that subsequent research operationalised but did not displace.

Edward Deci's 1971 Journal of Personality and Social Psychology paper "Effects of Externally Mediated Rewards on Intrinsic Motivation" ^[Deci1971] is the empirical origin of self-determination theory. The Soma-cube experiment — paid students spent less of their free time on the puzzles than unpaid students — was incompatible with the behaviourist prediction that reward strengthens behaviour. Mark Lepper, David Greene, and Richard Nisbett's 1973 nursery-school drawing study ^{[LepperGreeneNisbett1973]} replicated the effect in children using a non-monetary reward, establishing the generality of the overjustification phenomenon.

Deci and Richard Ryan's Intrinsic Motivation and Self-Determination in Human Behavior (Plenum, 1985) ^{[DeciRyan1985]} introduced the three basic needs (autonomy, competence, relatedness), the continuum of internalisation, and the autonomy-supportive versus controlling-context distinction that together constitute SDT. Deci, Eghrari, Anglin, and Keefe's 1994 Journal of Personality paper ^{[DeciEghrariAnglinKeefe1994]} identified the conditions under which internalisation occurs. Ryan and Deci's 2000 American Psychologist paper "Self-Determination Theory and the Facilitation of Intrinsic Motivation, Social Development, and Well-Being" (vol. 55, no. 1, pp. 68-78) ^{[RyanDeci2000]} is the modern synthesis that consolidated the theory into its current form. Gagné and Deci's 2005 organisational-behaviour review ^{[GagneDeci2005]}, Niemiec and Ryan's 2009 Theory and Research in Education paper ^{[NiemiecRyan2009]}, Williams and colleagues' 2002 Health Psychology paper ^{[Williams2002]}, and Przybylski, Rigby, and Ryan's 2010 Review of General Psychology model ^{[PrzybylskiRigbyRyan2010]} executed the cross-domain research programme that established SDT's empirical reach. The 2017 Ryan-Deci treatise Self-Determination Theory: Basic Psychological Needs in Motivation, Development, and Wellness ^{[RyanDeci2017]} integrates three decades of SDT research into the comprehensive synthesis from which the present unit is drawn.

Bibliography Master

Csikszentmihalyi, Mihaly. Flow: The Psychology of Optimal Experience. New York: Harper & Row, 1990.
Deci, Edward L. "Effects of Externally Mediated Rewards on Intrinsic Motivation." Journal of Personality and Social Psychology 18, no. 1 (1971): 105–115.
Deci, Edward L., Haleh Eghrari, Bruce P. Anglin, and Frank R. Keefe. "Facilitating Internalization: The Self-Determination Theory Perspective." Journal of Personality 62, no. 1 (1994): 119–142.
Deci, Edward L., and Richard Flaste. Why We Do What We Do: Understanding Self-Motivation. New York: Penguin, 1995.
Deci, Edward L., Richard Koestner, and Richard M. Ryan. "A Meta-Analytic Review of Experiments Examining the Effects of Extrinsic Rewards on Intrinsic Motivation." Psychological Bulletin 125, no. 6 (1999): 627–668.
Deci, Edward L., and Richard M. Ryan. Intrinsic Motivation and Self-Determination in Human Behavior. New York: Plenum, 1985.
Gagné, Marylène, and Edward L. Deci. "Self-Determination Theory and Work Motivation." Journal of Organizational Behavior 26, no. 4 (2005): 331–362.
Lepper, Mark R., David Greene, and Richard E. Nisbett. "Undermining Children's Intrinsic Interest with Extrinsic Reward: A Test of the 'Overjustification' Hypothesis." Journal of Personality and Social Psychology 28, no. 1 (1973): 129–137.
Maslow, Abraham H. "A Theory of Human Motivation." Psychological Review 50, no. 4 (1943): 370–396.
Niemiec, Christopher P., and Richard M. Ryan. "Autonomy, Competence, and Relatedness in the Classroom: Applying Self-Determination Theory to Educational Practice." Theory and Research in Education 7, no. 2 (2009): 133–144.
Pink, Daniel H. Drive: The Surprising Truth About What Motivates Us. New York: Riverhead, 2009.
Przybylski, Andrew K., C. Scott Rigby, and Richard M. Ryan. "A Motivational Model of Video Game Engagement." Review of General Psychology 14, no. 2 (2010): 154–166.
Ryan, Richard M., and Edward L. Deci. "Self-Determination Theory and the Facilitation of Intrinsic Motivation, Social Development, and Well-Being." American Psychologist 55, no. 1 (2000): 68–78.
Ryan, Richard M., and Edward L. Deci. Self-Determination Theory: Basic Psychological Needs in Motivation, Development, and Wellness. New York: Guilford Press, 2017.
Williams, Geoffrey C., Heather A. Gagné, Richard M. Ryan, and Edward L. Deci. "Facilitating Autonomous Motivation for Smoking Cessation." Health Psychology 21, no. 1 (2002): 40–50.

Prerequisites

29.11.01

Tier anchors

beginner: Deci, Why We Do What We Do (Penguin, 1995); Pink, Drive (Riverhead, 2009); Aronson-Wilson-Akert, Social Psychology (8th ed., Pearson, 2013), Ch. 11
intermediate: Ryan and Deci, Self-Determination Theory: Basic Psychological Needs in Motivation, Development, and Wellness (Guilford, 2017); Gagné (ed.), The Oxford Handbook of Work Engagement, Motivation, and Self-Determination Theory (Oxford, 2014)
master: Maslow 1943 Psych. Rev. 50; Deci 1971 J. Pers. Soc. Psychol. 18; Lepper-Greene-Nisbett 1973; Deci-Ryan 1985 (foundational SDT); Deci-Eghrari-Anglin-Keefe 1994; Ryan-Deci 2000 Am. Psychol. 55:68; Gagné-Deci 2005; Niemiec-Ryan 2009; Przybylski-Rigby-Ryan 2010; Ryan-Deci 2017

References

Maslow, Abraham H. — A Theory of Human Motivation, Psychological Review 50(4), 370-396 (1943) · the hierarchy of needs: physiological, safety, belonging, esteem, self-actualization
Deci, Edward L. — Effects of Externally Mediated Rewards on Intrinsic Motivation, Journal of Personality and Social Psychology 18(1), 105-115 (1971) · the Soma-cube overjustification experiments
Deci, Edward L., and Richard M. Ryan — Intrinsic Motivation and Self-Determination in Human Behavior (Plenum, 1985) · the foundational SDT monograph
Ryan, Richard M., and Edward L. Deci — Self-Determination Theory and the Facilitation of Intrinsic Motivation, Social Development, and Well-Being, American Psychologist 55(1), 68-78 (2000) · the modern synthesis
Ryan, Richard M., and Edward L. Deci — Self-Determination Theory: Basic Psychological Needs in Motivation, Development, and Wellness (Guilford Press, 2017) · the comprehensive treatise
Lepper, Mark R., David Greene, and Richard E. Nisbett — Undermining Children's Intrinsic Interest with Extrinsic Reward, Journal of Personality and Social Psychology 28(1), 129-137 (1973) · the nursery-school drawing experiment
Deci, Edward L., Haleh Eghrari, Bruce P. Anglin, and Frank R. Keefe — Facilitating Internalization: The Self-Determination Theory Perspective, Journal of Personality 62(1), 119-142 (1994) · autonomy-supportive versus controlling communication
Niemiec, Christopher P., and Richard M. Ryan — Autonomy, Competence, and Relatedness in the Classroom: Applying Self-Determination Theory to Educational Practice, Theory and Research in Education 7(2), 133-144 (2009) · SDT-informed pedagogy
Gagne, Marylene, and Edward L. Deci — Self-Determination Theory and Work Motivation, Journal of Organizational Behavior 26(4), 331-362 (2005) · autonomy-supportive management
Przybylski, Andrew K., C. Scott Rigby, and Richard M. Ryan — A Motivational Model of Video Game Engagement, Review of General Psychology 14(2), 154-166 (2010) · the SDT account of game engagement
Williams, Geoffrey C., Heather A. Gagne, Richard M. Ryan, and Edward L. Deci — Facilitating Autonomous Motivation for Smoking Cessation, Health Psychology 21(1), 40-50 (2002) · SDT-informed motivational interviewing in healthcare
Deci, Edward L., and Richard Flaste — Why We Do What We Do: Understanding Self-Motivation (Penguin, 1995) · the popular exposition

Estimated time

beginner: 25m
intermediate: 50m
master: 85m