Coercion in participation as a research subject.
D000704:Analysis of Variance; D001290:Attitude; D003216:Conditioning, Operant; D006339:Heart Rate; D006801:Humans; D009042:Motivation; D010865:Pilot Projects; D012054:Reinforcement, Psychology; D012106:Research; D013334:Students; D014495:Universities; D014838:Volunteers