Stable Individual Differences in Number Discrimination in Infancy

Autor/inn/en	Libertus, Melissa E.; Brannon, Elizabeth M.
Titel	Stable Individual Differences in Number Discrimination in Infancy
Quelle	In: Developmental Science, 13 (2010) 6, S.900-906 (7 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1363-755X
DOI	10.1111/j.1467-7687.2009.00948.x
Schlagwörter	Infants; Visual Stimuli; Visual Discrimination; Numbers; Novelty (Stimulus Dimension); Short Term Memory; Individual Differences; Age Differences; Predictor Variables; Child Development + Suchen Sie Ihr Suchwort? Infant; Toddler; Toddlers; Kleinkind; Zahlenraum; Kurzzeitgedächtnis; Individueller Unterschied; Age; Difference; Age difference; Altersunterschied; Prädiktor; Kindesentwicklung
Abstract	Previous studies have shown that as a group 6-month-old infants successfully discriminate numerical changes when the values differ by at least a 1:2 ratio but fail at a 2:3 ratio (e.g. 8 vs. 16 but not 8 vs. 12). However, no studies have yet examined individual differences in number discrimination in infancy. Using a novel numerical change detection paradigm, we present more direct evidence that infants' numerical perception is ratio-dependent even within the range of discriminable ratios and thus adheres to Weber's Law. Furthermore, we show that infants' numerical discrimination at 6 months reliably predicts their numerical discrimination abilities but not visual short-term memory at 9 months. Thus, individual differences in numerical discrimination acuity may be stable within the first year of life and provide important avenues for future longitudinal research exploring the relationship between infant numerical discrimination and later developing math achievement. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10