Why self-determined motivation is more sustainable than external rewards.
What the evidence says
- Self-determined motivation is associated with ”more behavioral effectiveness, greater volitional persistence, enhanced subjective well-being” than controlled motivation — the paper’s own list[1]
- The outcomes SDT ties to autonomous motivation are persistence, behavioral quality, and well-being[1]
- Extrinsic rewards can undermine intrinsic motivation. The mechanism the authors give is a shift to an external perceived locus of causality — diminished autonomy — and the same passage reports that a meta-analysis (Deci, Koestner & Ryan 1999) ”confirmed… that all expected tangible rewards made contingent on task performance do reliably undermine intrinsic motivation.” The paper also says the reward question “has been hotly debated” and names the dissent (Eisenberger & Cameron 1996)[1]
- Three basic psychological needs support self-determined motivation: autonomy, competence and relatedness — ”contexts supportive of autonomy, competence, and relatedness” are what the theory names[1]
- Motivation exists on a continuum from amotivation to intrinsic motivation — OIT identifies the specific types: external regulation (compliance) → introjected regulation (guilt/ego-driven) → identified regulation (consciously valued) → integrated regulation (congruent with self) → intrinsic motivation; the more internalized the regulation, the better the outcomes the paper reports[1]
- Greater internalization is associated with better outcomes in health care specifically, and the paper names weight among them — ”greater adherence to medications among people with chronic illnesses… better long-term maintenance of weight loss among morbidly obese patients… improved glucose control among diabetics… and greater attendance and involvement in an addiction-treatment program.” These are associations Ryan and Deci report from other studies, not results of their own[1]
- Integrated regulation — the most autonomous extrinsic form — is reached when regulations have been ”evaluated and brought into congruence with one’s other values”. *Introjected regulation, by contrast, is ”regulation by contingent self-esteem”, performed to avoid guilt or anxiety or to gain pride, and is still experienced as externally caused*[1]
- Once a regulation is internalized, the paper says, ”it will emanate from their sense of self”[1]
- Internalization requires supports for relatedness and competence, but autonomy support is additionally critical — without it, people reach at best introjected (guilt/anxiety-driven) regulation rather than true identified or integrated motivation[1]
- In weight management specifically: external rewards (financial incentives) show initial benefits that “invariably wane precipitously over time”; deeper personal values and meaningful goals sustain motivation better than external directives — separately, Ryan and Deci report that in health care ”greater internalization has been associated with” ”better long-term maintenance of weight loss among morbidly obese patients”, among other outcomes: associations they report from other studies[2],[1]