ERIC Number: EJ697738
Record Type: Journal
Publication Date: 2005-May
Reference Count: N/A
Impaired Verbal Short-Term Memory in down Syndrome Reflects a Capacity Limitation Rather than Atypically Rapid Forgetting
M. Purser, H.R.; Jarrold, C.
Journal of Experimental Child Psychology, v91 n1 p1-23 May 2005
Individuals with Down syndrome suffer from relatively poor verbal short-term memory. Recent work has indicated that this deficit is not caused by problems of audition, speech, or articulatory rehearsal within the phonological loop component of Baddeley and Hitch's working memory model. Given this, two experiments were conducted to investigate whether abnormally rapid decay underlies the deficit. In a first experiment, we attempted to vary the time available for decay using a modified serial recall procedure that had both verbal and visuospatial conditions. No evidence was found to suggest that forgetting is abnormally rapid in phonological memory in Down syndrome, but a selective phonological memory deficit was indicated. A second experiment further investigated possible problems of decay in phonological memory, restricted to item information. The results indicated that individuals with Down syndrome do not show atypically rapid item forgetting from phonological memory but may have a limited-capacity verbal short-term memory system.
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Publication Type: Journal Articles
Education Level: N/A
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