Exemplars in the Mist: The cognitive substrate of the representativeness heuristic
2008 (English)In: Scandinavian Journal of Psychology, ISSN 0036-5564, E-ISSN 1467-9450, Vol. 49, no 3, 201-212 p.Article in journal (Refereed) Published
The idea that people often make probability judgments by a heuristic short-cut, the representativeness heuristic, has been widely influential, but also criticized for being vague. The empirical trademark of the heuristic is characteristic deviations between normative probabilities and judgments (e.g., the conjunction fallacy, base-rate neglect). In this article the authors contrast two hypotheses concerning the cognitive substrate of the representativeness heuristic, the prototype hypothesis (Kahneman & Frederick, 2002) and the exemplar hypothesis (Juslin & Persson, 2002), in a task especially designed to elicit representativeness effects. Computational modelling and an experiment reveal that representativeness effects are evident early in training and persist longer in a more complex task environment and that the data are best accounted for by a model implementing the exemplar hypothesis.
Place, publisher, year, edition, pages
2008. Vol. 49, no 3, 201-212 p.
Category learning, Cognitive modeling, Exemplar memory, Prototype, Representativeness heuristic, Subjective probability
IdentifiersURN: urn:nbn:se:uu:diva-96782DOI: 10.1111/j.1467-9450.2008.00646.xISI: 000255062000001PubMedID: 18419587OAI: oai:DiVA.org:uu-96782DiVA: diva2:171469