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Category learning and change: differences in sensitivity to information that enhances or reduces intercategory
J Krueger1, M Rothbart, N Sriram
1University of Oregon.
Journal of Personality and Social Psychology
|June 1, 1989
Summary
Category abstractions are adaptable to new information, with changes amplified when category differences increase. This accentuation effect involves distinct learning and change stages, applicable to social beliefs.
Area of Science:
- Cognitive Psychology
- Social Psychology
Background:
- Understanding how abstract categories are modified by new information is crucial.
- Previous research has explored category learning but less on the dynamic changes in abstract representations.
Purpose of the Study:
- To investigate the amenability of abstract categories to new information.
- To examine the conditions under which category representations are modified.
- To explore the role of category accentuation in belief change.
Main Methods:
- Three experiments were conducted using numerical and person categories.
- Participants estimated cumulative means of number sets, with one set's mean being modified.
- The study analyzed how changes in category means affected participants' estimations.
Main Results:
- Category estimates changed more when the mean difference between categories was enhanced compared to when it was reduced.
- Evidence suggests a two-stage process: category learning followed by category change.
- The category accentuation effect was replicated with social (person) categories.
Conclusions:
- Abstract category representations are modifiable by new information.
- The accentuation effect, a key finding, highlights how perceived differences influence belief updating.
- Findings have implications for understanding the malleability of social beliefs and stereotypes.