Abstract
In the domain of pattern recognition, experiments have shown that perceivers integrate multiple sources of information in an optimal manner. In contrast, other research has been interpreted to mean that decision making is nonoptimal. As an example, Tversky and Kahneman (1983) have shown that subjects commit a conjunction fallacy because they judge it more likely that a fictitious person named Linda is a bank teller and a feminist than just a bank teller. This judgment supposedly violates probability theory, because the probability of two events can never be greater than the probability of either event alone. The present research tests the hypothesis that subjects interpret this judgment task as a pattern recognition task. If this hypothesis is correct, subjects’ judgments should be described accurately by the fuzzy logical model of perception (FLMP)—a successful model of pattern recognition. In the first experiment, the Linda task was extended to an expanded factorial design with five vocations and five avocations. The probability ratings were described well by the FLMP and described poorly by a simple probability model. The second experiment included (1) two fictitious people, Linda and Joan, as response alternatives and (2) both ratings and categorization judgments. Although the ratings were accurately described by both the FLMP and an averaging of the sources of information, the categorization judgments were described better by the FLMP. These results reveal important similarities in recognizing patterns and in decision making. Given that the FLMP is an optimal method for combining multiple sources of information, the probability judgments appear to be optimal in the same manner as pattern-recognition judgments.
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An oral version of this paper was originally presented at the meeting of the Psychonomic Society in Atlanta, GA, 1985, and at the XXIV International Congress of Psychology in Sydney, Australia, 1988. The research reported in this paper and the writing of the paper were supported, in part, by grants from the Public Health Service (PHS R01 NS 20314) and the graduate division of the University of California, Santa Cruz.
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Massaro, D.W. A pattern recognition account of decision making. Memory & Cognition 22, 616–627 (1994). https://doi.org/10.3758/BF03198400
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DOI: https://doi.org/10.3758/BF03198400