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ERIC Number: EJ1006918
Record Type: Journal
Publication Date: 2013-Feb
Pages: 21
Abstractor: As Provided
Reference Count: 86
ISSN: ISSN-0096-3445
On the Determinants of the Conjunction Fallacy: Probability versus Inductive Confirmation
Tentori, Katya; Crupi, Vincenzo; Russo, Selena
Journal of Experimental Psychology: General, v142 n1 p235-255 Feb 2013
Major recent interpretations of the conjunction fallacy postulate that people assess the probability of a conjunction according to (non-normative) averaging rules as applied to the constituents' probabilities or represent the conjunction fallacy as an effect of random error in the judgment process. In the present contribution, we contrast such accounts with a different reading of the phenomenon based on the notion of inductive confirmation as defined by contemporary Bayesian theorists. Averaging rule hypotheses along with the random error model and many other existing proposals are shown to all imply that conjunction fallacy rates would rise as the perceived probability of the added conjunct does. By contrast, our account predicts that the conjunction fallacy depends on the added conjunct being perceived as inductively confirmed. Four studies are reported in which the judged probability versus confirmation of the added conjunct have been systematically manipulated and dissociated. The results consistently favor a confirmation-theoretic account of the conjunction fallacy against competing views. Our proposal is also discussed in connection with related issues in the study of human inductive reasoning. (Contains 11 tables and 12 footnotes.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Italy