Language abilities, reading acquisition, and developmental dyslexia: limitations and alternative views.
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Biomedical subjects
Publications and source records attributed to J K Torgesen.
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This study was conducted in order to examine the role of individual differences in working memory and lexical access in accounting for age and reading skill related differences in performance on phonological synthesis tasks. The performance of 28 kindergarten, first-, and second-grade children with normal reading skills, as well as that of 28 reading-disabled second graders, was compared under four testing conditions. The testing conditions were formed by completely crossing rate of presentation of phoneme strings with type of stimulus to be blended (real or nonword). Both independent variables affected performance on the blending tasks, with better performance obtained at faster presentation rates and with real words. There was a developmental discontinuity in overall performance, with the kindergarten children obtaining substantially lower scores than the first or second graders. In the comparison of second-grade good and poor readers, there was a significant interaction between groups, presentation rates, and type of stimulus. The findings are discussed in terms of their implications for a general model of performance on the sound blending task, as well as their value for interpreting individual differences on the task.
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The relative ability of 38 fourth-grade boys, good and poor readers, to learn paired-associate lists requiring either verbal or nonverbal responses was assessed with four different tasks. Two of the tasks required either simple or complex verbal responses, while the other two involved learning simple and complex oral, nonverbal responses. The stimuli for all tasks were letter-like visual figures drawn on cards. The good readers learned more efficiently overall, but the major differences between reading groups occurred on the tasks requiring verbal responses.
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