Regression+towards+the+mean A statistical phenomenon in which, upon repeated testing, the mean of the subject group will on the second occasion fall between the group mean when first measured and the population mean – individuals with high or low scores, that is, at the extremes, will tend to move in the direction of the population mean.   (see also: regressive fallacy, Gambler's fallacy, pattern-seeking, Law of large numbers)   Back to: Glossary A-C, Glossary D-H, Glossary I-P, Glossary Q-S, Glossary T-Z   Glossary of selected Judgement & Decision-making, Belief-related, and other Psychology terms A-Z »   » Return to belief, judgement, and clear thinking » Labels: Regression towards the mean

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