The effect of pre-exposure on family resemblance categorization for stimuli of varying levels of perceptual difficulty.

Fraser MiltonUniversity of Exeter
Edward CopestakeUniversity of Exeter
David SatherleyUniversity of Exeter
Tobias StevensUniversity of Exeter
Andy WillsUniversity of Plymouth

Abstract

This study investigated the effect that pre-exposure to a set of stimuli has on the prevalence of family resemblance categorization. 64 participants were tested to examine the effect that pre-exposure type (same-stimuli vs unrelated-stimuli) and the perceptual difficulty of the stimuli (perceptually similar vs perceptually different) has on categorization strategy. There was a significant effect of perceptual difficulty, indicating that perceptually different stimuli evoked a higher level of family resemblance sorting than perceptually similar stimuli. There was no significant main effect of pre-exposure type; however, there was a significant interaction between pre-exposure type and level of perceptual difficulty. Post-hoc tests revealed that this interaction was the result of an increase in family resemblance sorting for the perceptually different stimuli under relevant pre-exposure but no such effect for perceptually similar stimuli. The theoretical implications of these findings are discussed.

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The effect of pre-exposure on family resemblance categorization for stimuli of varying levels of perceptual difficulty. (394 KB)



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