Psychology Commons^™

Base Rates, Individuating Information, Expertise, And Transfer Of Knowledge In Judgment Under Uncertainty, Owen Helmkay

Theses and Dissertations (Comprehensive)

Numerous studies suggest that in judging an individual’s category membership, people largely ignore the population frequency membership in the category (base rate information) in favour of the individuating information about that particular individual (more commonly referred to as the “Base Rate Fallcy”: Bar-Hillel, 1980). One particularly interesting strategy that has been shown to increase the use of base rate information is what Ginossar and Trope (1987) refer to as the Prior Activation Assumption. The purpose of this thesis was to extend the boundaries of Ginossar and Trope’s (1987) findings by enhancing participants’ use of base rate information through the manipulation …