Probability Concepts in Deaf and Hearing Children

Hearing children at 5 ages, CA 7-15, and deaf children at 3 ages, CA 11-15, were compared on a 2-choice probability concept task. Ss made predictions at varying uneven odds, even odds, and for "sure thing" outcomes. Both deaf and hearing improved with increasing age. Younger deaf were slig...

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Bibliographic Details
Published in:Child development 1966-12, Vol.37 (4), p.917-927
Main Author: Ross, Bruce M.
Format: Article
Language:English
Subjects:
Age groups
Children
Deafness
High school students
Sex linked differences
Statistical significance
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Summary:Hearing children at 5 ages, CA 7-15, and deaf children at 3 ages, CA 11-15, were compared on a 2-choice probability concept task. Ss made predictions at varying uneven odds, even odds, and for "sure thing" outcomes. Both deaf and hearing improved with increasing age. Younger deaf were slightly poorer, but older deaf, though still "language deficient," caught up with the hearing. Although "sure thing" results indicated that the objective odds were generally known to Ss, incorrect predictions were numerous at older ages. Ss at all ages were sensitive to differences among uneven odds. However, with increasing age, Ss were more sensitive to the smaller departures from even odds. Occurrence of initial alternation of predictions decreased with increasing age but remained sizable at older ages. It was concluded that Ss show a developmental sequence in dealing with probability situations.
ISSN:0009-3920
1467-8624
DOI:10.2307/1126613