A Specific Deficit in Visuospatial Simultaneous Working Memory in Down Syndrome

Autor/inn/en	Lanfranchi, S.; Carretti, B.; Spano, G.; Cornoldi, C.
Titel	A Specific Deficit in Visuospatial Simultaneous Working Memory in Down Syndrome
Quelle	In: Journal of Intellectual Disability Research, 53 (2009) 5, S.474-483 (10 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0964-2633
DOI	10.1111/j.1365-2788.2009.01165.x
Schlagwörter	Down Syndrome; Short Term Memory; Spatial Ability; Neurological Impairments; Comparative Analysis; Hypothesis Testing; Children; Adolescents; Reaction Time; Cognitive Processes + Suchen Sie Ihr Suchwort? 'Downs Syndrome; Down''s Syndrome'; Down-Syndrom; Kurzzeitgedächtnis; Räumliches Vorstellungsvermögen; Neurodegenerative Erkrankung; Hypothesenprüfung; Hypothesentest; Child; Kind; Kinder; Adolescent; Adolescence; Adoleszenz; Jugend; Jugendalter; Jugendlicher; Reaktionsvermögen; Cognitive process; Kognitiver Prozess
Abstract	Background: Recent studies have demonstrated that individuals with Down syndrome (DS) present both central and verbal working memory deficits compared with controls matched for mental age, whereas evidence on visuospatial working memory (VSWM) has remained ambiguous. The present paper uses a battery of VSWM tasks to test the hypothesis that individuals with DS can also encounter specific difficulties in VSWM. Method: Four tasks were administered to 34 children and adolescents with DS and 34 controls matched for verbal mental age. In two of these tasks, participants had to remember a series of locations sequentially presented on a matrix (spatial-sequential WM); in another two, they had to remember locations simultaneously presented (spatial-simultaneous WM). Results and Conclusions: Results showed that individuals with DS are poorer than controls in the spatial-simultaneous tasks, but not in the spatial-sequential tasks. These findings were not due to a difference in speed of visuospatial processing. In fact, when performances of the two groups in VSWM were compared using speed measures as covariates, differences between groups remained. It is suggested that the simultaneous VSWM deficit of individuals with DS could be due to the request for processing more than one item at a time. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10