Five-month-old infants were habituated to three types of visually presented rigid motion, with duration of fixation as the dependent measure. After reaching a criterion of habituation, a fourth rigid motion (not habituated) and a deformation were presented. (Author/SS)

Two studies: (1) assessed the infant's ability to perceive differences between two-dimensional and three-dimensional stimuli; and (2) tested the infants' ability to transfer responses across dimensions. (Author/SB)

Examined length of fixation time responses of neonates to pairs of red, blue, and green acetate stimuli. (Author)

The short-term reliability and long-term stability of visual habituation and dishabituation in infancy were assessed in a sample of 186 infants from four age groups (3-, 4-, 7- and 9-month-olds) seen for two within-age sessions, and in a sample of 69 infants seen longitudinally at 3, 4, 7, and 9 months of age. (Author/BN)

The size of the effective visual field during the first weeks of life is found to depend on two factors: It increases with age, but contracts in the face of competition from ongoing activity such as fixation of a central stimulus or nonnutritive sucking. (Author/SB)

The ability of young infants between the ages of 8 and 17 weeks to perceive outline shapes was investigated in nine experiments using an habituation paradigm. (JMB)

Visual pattern preferences were established for 96 9- and 13-week-old infants using stimuli varying in contour density presented either at a low, moderate, or high luminance level. Age differences in the maximally preferred patterns across stimuli and luminance levels indicated that luminance interacts with contour density in determining stimulus…

Assessed infants' detection of relative motion between a target and its surrounding static reference features in two experiments. Found evidence for 8- and 20-week-olds' detection of a moving target, and a target and surrounding reference features moving in opposite directions. Twenty-week-olds detected a target that moved faster and in the same…

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)

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…

Purpose of this study was to test the adequacy of the serial habituation hypothesis as an account of the infant's perceptual commerce with visual stimuli. (Author)

Examined the visual scanning patterns of infants ages 6, 10, and 13 weeks who viewed static geometric figures. Measures of fixation dwell-times, saccade lengths, and the choices and sequences of saccadic targets revealed that, although younger infants demonstrated salience-guided scanning behavior, older infants increasingly utilized volitional…