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Download full textSalapatek, Philip; And Others – 1975
This study investigated whether the acuity threshold for distant targets is elevated for infants ranging in age from 24 to 63 days. Using square wave gratings and a modified staircase procedure, acuity thresholds for each of 331 infants were determined for one or more of the distances 30 cm, 60 cm, 90 cm and 150 cm. Acuity threshold was defined as…
Descriptors: Distance, Eye Fixations, Infants, Physiology
Peer reviewedPipp, Sandra; Haith, Marshall M. – Journal of Experimental Child Psychology, 1984
Visual fixations were recorded in newborn, 4-, and 8-week-old human infants as they scanned displays that varied in contour length, size, number, and a new metric, CVAL (based on Contour Variability, Amount and Location). One of the findings was that both contour length and CVAL separately accounted for approximatel1 95 of looking-duration…
Descriptors: Age Differences, Attention Span, Dimensional Preference, Eye Fixations
