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https://hdl.handle.net/2440/102334
Type: | Conference paper |
Title: | Going to extremes: the influence of unsupervised categories on the mental caricaturization of faces and asymmetries in perceptual discrimination |
Author: | Hendrickson, A. Carvalho, P. Goldstone, R. |
Citation: | Proceedings of the 34th Annual Meeting of the Cognitive Science Society: Building bridges across cognitive sciences aournd the world, 2012 / Miyake, N., Peebles, D., Cooper, R. (ed./s), pp.1662-1667 |
Issue Date: | 2012 |
ISBN: | 9780976831884 |
Conference Name: | The 34th Annual Meeting of the Cognitive Science Society (CogSci 2012) (1 Aug 2012 - 4 Aug 2012 : Sapporo, Japan) |
Editor: | Miyake, N. Peebles, D. Cooper, R. |
Statement of Responsibility: | Andrew T. Hendrickson, Paulo F. Carvalho, Robert L. Goldstone |
Abstract: | Recent re-analysis of traditional Categorical Perception (CP) effects show that the advantage for between category judgments may be due to asymmetries of within-category judgments (Hanley & Roberson, 2011). This has led to the hypothesis that labels cause CP effects via these asymmetries due to category label uncertainty near the category boundary. In Experiment 1 we demonstrate that these “within-category” asymmetries exist before category training begins. Category learning does increase the within-category asymmetry on a category relevant dimension but equally on an irrelevant dimension. Experiment 2 replicates the asymmetry found in Experiment 1 without training and shows that it does not increase with additional exposure in the absence of category training. We conclude that the within-category asymmetry may be a result of unsupervised learning of stimulus clusters that emphasize extreme instances and that category training increases this caricaturization of stimulus representations. |
Keywords: | Categorical perception; category labels; perceptual learning; category learning; language |
Rights: | Copyright status unknown |
Published version: | https://mindmodeling.org/cogsci2012/ |
Appears in Collections: | Aurora harvest 3 Psychology publications |
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