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Baddeley, A.; Jarrold, C. – Journal of Intellectual Disability Research, 2007
A brief account is given of the evolution of the concept of working memory from a unitary store into a multicomponent system. Four components are distinguished, the phonological loop which is responsible for maintaining speech-based information, the visuospatial sketchpad performing a similar function for visual information, the central executive…
Descriptors: Down Syndrome, Short Term Memory, Long Term Memory, Phonology
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Walley, R. M.; Donaldson, M. D. C. – Journal of Intellectual Disability Research, 2005
Background: PraderWilli syndrome (PWS) is a genetic disorder caused by the absence of expression of maternally imprinted genes on the long arm of chromosome 15 (15q 11-13). There are two main genetic sub-types: (1) deletion, caused by the absence of paternally derived genetic material; and (2) uniparental disomy (UPD), where two copies of…
Descriptors: Memory, Health Services, Clinical Diagnosis, Verbal Ability
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Bertella, L.; Girelli, L.; Grugni, G.; Marchi, S.; Molinari, E.; Semenza, C. – Journal of Intellectual Disability Research, 2005
This paper investigates mathematical skills in Prader-Willi Syndrome (PWS), a pathological condition because of congenital alterations of chromosome pair 15. The following questions were addressed: (1) Are mathematical skills in PWS relatively more impaired with respect to other cognitive functions (as has been repeatedly but anecdotally…
Descriptors: Measures (Individuals), Task Analysis, Cognitive Ability, Short Term Memory