Sources of Variation within the Individual
Sources of Variation within the Individual
This chapter reviews sources of variation in decision making and choice that arise within the individual, and discusses the possible significance of such variation for the development of an evolutionarily plausible account of decision making. Different sources of within-individual variation are reviewed, including noise, general cognitive ability and life span changes, mood, and personality. The approaches taken by economics, cognitive psychology, and the psychology of personality and individual differences are compared to and contrasted with ecological and evolutionary approaches. It is argued that sampling models may provide a unified cognitive approach to within-and between-individual variation in human judgment and decision making, albeit one that has yet to be linked sufficiently to ecological and evolutionary approaches.
Keywords: Strüngmann Forum Reports, variation in decision making, variation in choice, cognition, personality
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