In search of closure: Subjective contour illusions, gestalt completion tests, and implications

Jeanette Wasserstein, Russ Zappulla, Jeffrey Rosen, Louis Gerstman, Donald Rock

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

This study investigates the construct validity of perceptual closure tests (CTs), and isolates a common processing demand from the right-hemisphere. Sixty-seven patients with focal unilateral lesions (34 right side, 33 left side), and 80 control subjects participated. Multivariate analyses indicated that (1) there was substantial age-related variance in all CTs, while sex was variably significant; (2) CTs are not uniform in their discriminating ability, and hence factorially complex; and (3) their specifically right hemisphere-sensitive dimension was subjective contour illusions, and interestingly unrelated to facial discrimination ability. The methodological and theoretical implications are discussed.

Original languageEnglish
Pages (from-to)1-14
Number of pages14
JournalBrain and Cognition
Volume6
Issue number1
DOIs
StatePublished - Jan 1987
Externally publishedYes

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