Title: Identification of everyday objects on the basis of silhouette and outline versions
Authors: Wagemans, Johan ×
De Winter, Joeri
Op de Beeck, Hans
Ploeger, Annemie
Beckers, Tom
Vanroose, Peter #
Issue Date: 2008
Publisher: Pion ltd
Series Title: Perception vol:37 issue:2 pages:207-244
Abstract: Line drawings of everyday objects were modified into silhouettes by filling-in the complete area enclosed by boundary contours, and outline versions were created by extracting the contours from the silhouettes. A large number of participants was asked to try to identify these silhouette and outline versions in experiment 1. Identifiability ranged from 0% to 100% correct responses with a large range in-between. Several kinds of errors and several reasons for difficulties with identification emerged in our data set. In experiment 2, we compared the original identification rates to those of inverted silhouettes (white figures on a black background), and in experiment 3 we compared the original identification rates of objects with filled-in holes or background parts to those of versions without filling-in. These stimuli and identification norms are useful for additional research on priming and context effects of object identification, neuropsychological deficits of object identification, and all kinds of studies with silhouettes where the role of top down knowledge could be of interest.
ISSN: 0301-0066
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Psychology of Learning and Experimental Psychopathology
Laboratory for Experimental Psychology
× corresponding author
# (joint) last author

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