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Patterns of individual differences and rational choice

Published online by Cambridge University Press:  09 April 2001

Vittorio Girotto
CREPCO, Université de Provence, Aix-en-Provence, 13100, France; and Department of Psychology, Trieste University, Trieste,


I discuss an aspect of individual differences which has not been considered adequately in the target article, despite its potential role in the rationality debate. Besides having different intellectual abilities, different individuals may produce different erroneous responses to the same problem. In deductive reasoning, different response patterns contradict deterministic views of deductive inferences. In decision-making, variations in nonoptimal choice may explain successful collective actions.

Open Peer Commentary
© 2000 Cambridge University Press

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