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Verbal Short-Term Memory Span in Speech-Disordered Children: Implications for Articulatory Coding in Short-Term Memory
Adrian Raine, Charles Hulme, Helen Chadderton and Pauline Bailey
Vol. 62, No. 2 (Apr., 1991), pp. 415-423
Stable URL: http://www.jstor.org/stable/1131013
Page Count: 9
You can always find the topics here!Topics: Memory, Children, Child psychology, Control groups, Speech coding, Child development, Spoken communication, Rehearsal, Working memory, Motor ability
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One influential explanation of the development of verbal short-term memory in children argues that short-term memory capacity is a direct function of speech rate. This theory predicts that children with pathologically slow speech will show reduced verbal short-term memory capacity and will show less evidence of speech-base coding on verbal memory tasks. To test this prediction, verbal short-term memory span was assessed using a task that did not require a verbal response in 37 speech-disordered children and 37 age- and sex-matched controls (age range 4-15 years). The speech-disordered group had a significantly lower short-term memory capacity, a smaller word length effect, and reduced speech-motor activity during rehearsal periods. Convariance analyses revealed that these differences were not a function of general intellectual or motor speed differences between the groups, and that speech rate as a covariate abolished group differences in short-term memory. These results suggest that speech rate may be a causal determinant of verbal short-term memory capacity.
Child Development © 1991 Society for Research in Child Development