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Farran, Emily K.; Brown, Janice H.; Cole, Victoria L.; Houston-Price, Carmel; Karmiloff-Smith, Annette – European Journal of Developmental Science, 2008
Grouping by luminance and shape similarity has previously been demonstrated in neonates and at 4 months, respectively. By contrast, grouping by proximity has hitherto not been investigated in infancy. This is also the first study to chart the developmental emergence of perceptual grouping longitudinally. Sixty-one infants were presented with a…
Descriptors: Infants, Visual Stimuli, Light, Geometric Concepts
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Farran, Emily K.; Brown, Janice H.; Cole, Victoria L.; Houston-Price, Carmel; Karmiloff-Smith, Annette – European Journal of Developmental Science, 2007
Perceptual grouping by luminance similarity and by proximity was investigated in infants with Williams syndrome (WS) aged between 6 and 36 months (visit 1, N=29). WS infants who were still under 36 months old, 8 months later, repeated the testing procedure (visit 2, N=15). Performance was compared to typically developing (TD) infants aged from 2…
Descriptors: Infants, Young Children, Age Differences, Toddlers