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Science 8 December 1972:
Vol. 178. no. 4065, pp. 1108 - 1110
DOI: 10.1126/science.178.4065.1108
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Articles

Object Distance as a Determinant of Visual Fixation in Early Infancy

B. E. McKenzie 1 and R. H. Day 1

1 Department of Psychology, Monash University, Clayton, Victoria, 3168, Australia

Data from two experiments show that the duration of visual fixation of solid objects by infants aged 6 to 20 weeks varies as a function of object distance between 30 and 90 centimeters. There was no characteristic habituation of fixation of an object at 90 centimeters but there was a marked increase in fixation time when objects were advanced to 30 centimeters (experiment 1). A linear decline in fixation times occurred as the object distance increased from 30 to 90 centimeters with the real size and the angular size of the object held constant (experiment 2). No evidence for visual size constancy in young infants was obtained by this method.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Infant Perception of Visually Presented Objects.
P. C. DODWELL, D. W. MUIR, and D. DIFRANCO (1979)
Science 203, 1138-1139
   PDF »
Responses of infants to visually presented objects.
P. Dodwell, D Muir, and D DiFranco (1976)
Science 194, 209-211
   Abstract »    PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)