Perception and Interpretation of Ambiguous Sentences by Learning Disabled Twelve-Year-Olds

Abstract

The present research assessed and compared the abilities of 27 learning disabled twelve-year-olds, 27 academically achieving age controls, 10 academically achieving seven- to eight-year-olds, and 10 normally developing five- to six-year-olds to perceive and interpret lexical and syntactic ambiguities in sentences. Eight lexically ambiguous, eight syntactically ambiguous, and four unambiguous control sentences were presented for interpretation of their alternatives in meaning. Each experimental sentence was associated with four pictorial choices. Significant differences in the ability to perceive and interpret the alternative meanings of both lexical and syntactical ambiguities were found between the learning disabled and the academically achieving twelve-year-olds. No significant difference existed in the ability of the learning disabled twelve-year-olds and the seven- to eight-year-old controls to perceive and interpret lexical ambiguities; however, they differed significantly in the ability to interpret the syntactic ambiguities. Comparison of the ability of the learning disabled twelve-year-olds and the five- to six-year-old controls to interpret the syntactic ambiguities indicated no significant differences. Among the learning disabled twelve-year-olds, performances on the ambiguous sentence test correlated positively with performances on tests of delayed sentence recall (NSST-Expressive) and of comprehension of sentences with linguistic concepts and relationships (Semel & Wiig, 1980). Performances did not correlate significantly with measures of verbal intelligence (WISC-R Verbal Scale). The present findings support previous observations of linguistic deficits among learning disabled children and adolescents and suggest that significant limitations may exist in the acquisition of linguistic competence by some children in this diagnostic group.

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