Deci & Ryan (1985, 2000) Self-Determination Theory — intrinsic motivation supported by three needs: autonomy + competence + relatedness

Summary

Claim: Self-Determination Theory (SDT): intrinsic motivation is supported by satisfying three basic psychological needs: (1) autonomy (feeling the origin of one's own actions); (2) competence (feeling effective); (3) relatedness. Foundational sources: Deci & Ryan (1985), Intrinsic Motivation and Self-Determination in Human Behavior; Ryan & Deci (2000), "Self-Determination Theory and the Facilitation of Intrinsic Motivation...", American Psychologist 55(1), 68-78.

Source: Deci & Ryan (1985) book; Ryan & Deci (2000), American Psychologist.

Confidence: Verified for theory.

Why this matters for Candid: Actively operating a tool — making choices, providing inputs, controlling the interaction — supports autonomy and competence, which is intrinsically engaging. Anchors R3 — Support agency + competence (2-4 meaningful choices + positive contextual feedback); avoid choice overload and frustration; let the user DO the work.