Reversals in Psychology

Many well-known psychology findings, including elderly priming, Milgram's obedience experiments and the Stanford prison experiment, lack good evidence, according to a compiled list of reversals. Elderly priming's original effect size of d=0.82 to 1.08 fell to d=-0.07 and d=-0.22 in replications by Doyen and Pashler. Milgram's 65% obedience figure is described as resting on weak evidence for compliance rather than obedience, and the Stanford prison study is called not an experiment. Failed replications usually challenge evidence for a hypothesis rather than affirm its opposite.