A researcher measured autonomy support and motivation once with a self-report survey and concluded that autonomy support boosts motivation.
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A researcher concluded that rewards reduce motivation after testing 18 children in one nursery, with no group that received no reward, and measuring free-time drawing on a single day.
Achievement motivation was scored from participants' written stories about ambiguous pictures, rated by a single researcher. Higher scorers later chose harder tasks.
Table 2 groups students by intrinsic-motivation tertile and shows mean exam score: low tertile 58%, medium 67%, high 74%.

A survey based on a Western 'hierarchy of needs' asked people in several countries to rank what motivates them. Rankings in some countries did not match the order the model predicts.
Practice IB Psychology (First Exam 2027) Topic 4.2 Motivation with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for 4.2 Motivation and mirrors Paper 1, 2, 3 style where relevant.
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