One hundred and sixty subjects ages 7, 9, 11 and 21 years judged the standard Brentano form and a dot form of the illusion of 5 trials at 30 second intervals. (LLK)

This study explores the reason why very young infants are unable to respond differentially to faces and the cause for developmental changes in infant face perception by age 3 months. Linear systems analysis (LSA) and the contrast sensitivity function (CSF) were used to estimate the facial pattern information available to 1- and 3-month-old…

This paper describes three experiments which investigated children's recognition of moving, active people. Experiments 1 and 2 found that young children had considerable difficulty in recognizing a videotaped person who initially performed a single 10-sec activity and then reappeared with a different activity and/or different hair style. The…

This document reports on a series of visual scanning studies done with Israeli preschoolers and kindergartners to resolve issues related to diagnostic test and instructional materials design. The first study assessed the effect of item content on error rate. Three multiple-choice tests, differing only in item content, were given to 38…

The eye movements of infants, between 4 and 11 weeks old, were recorded while they viewed either a representation of a face or nonface stimulus. (Author/SB)

Two studies explored the hypothesis that young children perceive integrally some stimuli that older children perceive separably. In both experiments, kindergarten, second- and fifth-grade children were required to classify sets of stimuli that varied in size and brightness. (SB)

Compares estimates of monocular visual resolution of children 6- to 36-months of age with three psychophysical procedures: the Probabilistic Estimation by Sequential Testing (PEST), a modification of the PEST procedure, and the method-of-constant stimuli. (HOD)

An Ames static trapezoidal window was used to test infants' responsiveness to pictorial depth. Sensitivity to the pictorial information for depth that is present in the trapezoidal window appears to develop after the age of 22 weeks. (Author/DB)

Tested infants' latency in turning toward stimulus patterns and the duration of their initial fixation. Results showed that "turning latency" fell in a linear manner from 36 to 120 weeks after conception. Fixation time fell abruptly at 53 weeks. Preterm and full-term infants showed the same developmental trends. (BC)

This experiment examined developmental changes in the ability of infants to learn conceptual categories regarding the human face. A total of 108 infants, aged 18, 24, and 30 weeks, were habituated to (1) the same face in the same orientation, (2) the same face in differing orientations, or (3) different faces in different orientations. All…

Preschool and third grade children matched the orientation of stimuli tachistoscopically presented at times individually set to achieve about 75 percent correct performance. Preschoolers showed no superiority on left versus right while third graders showed significant top and right superiorities. Results are compared with those for adults on the…

This study investigates the visual information storage capacity in 5-, 8-, 11-, and 21-year olds. A partial report technique is used to assess the amount of information that children can take in and what the course of information loss was over time. (DP)