No evidence for rule-based processing in the inverse base-rate effect |
| |
Authors: | Koen Lamberts Christopher Kent |
| |
Affiliation: | Department of Psychology, University of Warwick, Coventry, England. k.lamberts@warwick.ac.uk |
| |
Abstract: | The inverse base-rate effect in categorization (Medin & Edelson, 1988) arises when participants assign an ambiguous stimulus to a category that occurred less frequently than an alternative category, against the principles of Bayesian decision making. In the experiment reported in this article, rule-based and attention-shifting accounts of the inverse base-rate effect were evaluated. Participants completed a categorization task, known to produce the inverse base-rate effect, under standard conditions, under time pressure, and with a secondary task load. The inverse base-rate effect persisted under severe time pressure and under secondary task load. The results provided no evidence for the role of rule-based processes in producing the inverse base-rate effect. The data from the experiment are compatible with an attention-shifting account. |
| |
Keywords: | |
本文献已被 PubMed SpringerLink 等数据库收录! |
|