Measures the full self-determination theory (SDT) motivation continuum applied to academic contexts — from amotivation through three forms of extrinsic motivation to three forms of intrinsic motivation. The Relative Autonomy Index (RAI) captures overall autonomous vs. controlled motivation. Widely used in educational psychology and student wellbeing research.
Vallerand, R.J., Pelletier, L.G., Blais, M.R., Brière, N.M., Senécal, C., & Vallières, E.F. (1992). The Academic Motivation Scale: A measure of intrinsic, extrinsic, and amotivation in education. Educational and Psychological Measurement, 52(4), 1003–1017.
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