Noncategorical approaches to feature prediction with uncertain categories.
In four experiments, we investigated how people make feature predictions about objects whose category membership is uncertain. Artificial visual categories were presented and remained in view while a novel instance with a known feature, but uncertain category membership was presented. All four experiments showed that feature predictions about the test instance were most often based on feature correlations (referred to as feature conjunction reasoning). Experiment 1 showed that feature conjunction reasoning was generally preferred to category-based induction in a feature prediction task. Experiment 2 showed that people used all available exemplars to make feature conjunction predictions. Experiments 3 and 4 showed that the preference for predictions based on feature conjunction persisted even when category-level information was made more salient and inferences involving a larger number of categories were required. Little evidence of reasoning based on the consideration of multiple categories (e.g., Anderson, (Psychological Review, 98:409-429, 1991)) or the single, most probable category (e.g., Murphy & Ross, (Cognitive Psychology, 27:148-193, 1994)) was found.
School of Psychology, University of New South Wales, Sydney, NSW 2052, Australia. c.papadopoulos@unsw.edu.au
Christopher
C
Papadopoulos
Brett K
BK
Hayes
Ben R
BR
Newell
D001245:Association Learning; D001288:Attention; D003118:Color Perception; D004193:Discrimination Learning; D006801:Humans; D010364:Pattern Recognition, Visual; D011337:Probability Learning; D035501:Uncertainty
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