Abstract:
:Matching-to-sample procedures were used to assess picture representation skills of severely retarded, nonverbal adolescents. Identity matching within the classes of objects and life-size, full-color photos of the objects was first used to assess visual discrimination, a necessary condition for picture representation. Picture representation was then assessed through photo-object matching tasks. Five students demonstrated visual discrimination (identity matching) within the two classes of photos and the objects. Only one student demonstrated photo-object matching. The results of the four students who failed to demonstrate photo-object matching suggested that physical properties of photos (flat, rectangular) and depth dimensions of objects may exert more control over matching than the similarities of the objects and images within the photos. An analysis of figure-ground variables was conducted to provide an empirical basis for program development in the use of pictures. In one series of tests, rectangular shape and background were removed by cutting out the figures in the photos. The edge shape of the photo and the edge shape of the image were then identical. The results suggest that photo-object matching may be facilitated by using cut-out figures rather than the complete rectangular photo.
journal_name
J Appl Behav Analjournal_title
Journal of applied behavior analysisauthors
Dixon LSdoi
10.1901/jaba.1981.14-465subject
Has Abstractpub_date
1981-01-01 00:00:00pages
465-78issue
4eissn
0021-8855issn
1938-3703journal_volume
14pub_type
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journal_title:Journal of applied behavior analysis
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journal_title:Journal of applied behavior analysis
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journal_title:Journal of applied behavior analysis
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