The Influence of Trisomy 21 on Subitising Limit

Autor/inn/en	Zimpel, André Frank; Rieckmann, Torben
Titel	The Influence of Trisomy 21 on Subitising Limit
Quelle	In: International Journal of Disability, Development and Education, 69 (2022) 3, S.987-1005 (19 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1034-912X
DOI	10.1080/1034912X.2020.1737317
Schlagwörter	Down Syndrome; Genetic Disorders; Visual Perception; Learning Disabilities; Attention Span; Mathematics; Visual Stimuli; Number Concepts; Short Term Memory + Suchen Sie Ihr Suchwort? 'Downs Syndrome; Down''s Syndrome'; Down-Syndrom; Visuelle Wahrnehmung; Learning handicap; Lernbehinderung; Mathematik; Number concept; Zahlbegriff; Kurzzeitgedächtnis
Abstract	Empirical evidence suggests a phonological loop deficit associated with Down syndrome. A trisomy 21 may be associated with a narrowing of visual attention to fewer than four objects at a time too. In a study with computer tachistoscopy, the hypothesis was confirmed in all 194 persons with trisomy 21. The subitising limit of persons with trisomy 21 thus has a value that lies between the value of neurotypical persons and persons with simultanagnosia. A fitting term would therefore be 'simultandysgnosia'. Consideration of this dysgnosia could prove to be a key to learning disabilities in mathematics in particular and learning disabilities in general. Diagnostic and learning methods should consider this limitation of the attention span not only in verbal but also in visual tasks. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01