Compares monocular depth perception with binocular depth perception in five- to seven-month-old infants. Reaching preferences (dependent measure) observed in the monocular condition indicated sensitivity to monocular depth information. Binocular viewing resulted in a far more consistent tendency to reach for the nearer object. (Author)

Presents a theoretical model of partial occlusion drawing, along with three experiments. Experiment one studied whether planning or scanning is involved in partial occlusion drawing, and the second explored whether group-encoding of similar objects creates a drawing problem. Experiment three tested predictions derived on the conjoint effects of…

Two experiments examined the effects of common motion, background texture, and orientation on four-month olds' perception of unity of a partially occluded rod. Results indicated that infants' perception of object unity is not dependent on a single visual cue but on a variety of cues including motion, interposition, depth cues, background texture,…

Two experiments examined children's ability to use lengths of lines on a page to show orientations of object surfaces. Found that five- and six-year olds are more reluctant to depart from actual object proportions than seven- and eight-year olds, but children in both age groups can foreshorten line lengths to indicate surfaces receding from a…

In two experiments, preschool children and adults were asked to judge which way an equilateral triangle was pointing under several contextual conditions. Results indicated that children and adults attended to both global and local levels of a pattern. (BC)

The development of visual orienting to a cued target on the part of practicing and nonpracticing tennis players aged 13, 16, and 25 years was examined. Results indicated that practicers were not faster than nonpracticers in processing visual information and that subjects of all ages oriented attention voluntarily to cued locations. (LB)

Two studies investigated the effect of age on memory for visual and spatial information. Five to 10 year olds were asked to reconstruct a previously seen spatial arrangement of objects. The association between an object's identity and its location was weaker for younger than for older children. (LB)

Investigated 4-6 year olds' ability to compare the distances covered by a direct and an indirect route to a location. Although many children believed that both routes covered the same distance, about 40% of the four year olds could explain why the direct route was shorter. (MDM)

Tested infants' remembrance of the orientations and angular relations of line segments. In one experiment, infants "dishabituated" to a change in orientation but not a change in angle. In two further experiments, infants familiar with either an acute or obtuse angle gave strong novelty preferences to a different angle. (BC)

This study investigated whether deafness contributes to enhancement of visual spatial cognition, independent of knowledge of sign language. Comparison of 12 congenitally deaf children not exposed to sign language and 12 matched hearing controls found that the groups did not differ in their performance on visual spatial skills tests. (Author/DB)

Three experiments investigated the role of egocentric orientation in subsequent memory for layouts learned via route (ground-level) and survey (aerial or overview) perspectives. Participants learned virtual environments from text descriptions (Experiment 1) or visual presentation (Experiments 1-3). In all experiments, scene recognition for route…

During locomotion, retinal flow, gaze angle, and vestibular information can contribute to one's perception of self-motion. Their respective roles were investigated during active steering: Retinal flow and gaze angle were biased by altering the visual information during computer-simulated locomotion, and vestibular information was controlled…

The line-bisection task, adapted to utilise a wooden rod as the bisection stimulus, has revealed that patients with visuo-spatial neglect may be more accurate at bisection when asked to pick up the rod, compared to pointing to its centre. We recently reported that neurologically intact participants show a similar dissociation on this…

The present study assessed the relations between basic motor abilities in kindergarten and scholastic, social, and emotional adaptation in the transition to formal schooling. Seventy-one five-year-old kindergarten children were administered a battery of standard assessments of basic motor functions. A year later, children's adjustment to school…

According to the spatial registration hypothesis, the representation of stimulus location is automatically encoded during perception and it can interact with a more abstract linguistic representation. We tested this hypothesis in two experiments, using the semantic judgements of words. In the first experiment, words for animals that either fly or…