Investigates the effect of orientation of depth cues on the magnitude of perceived depth in pictures. Finds that, for each test drawing, the orientation with the far point above the near point provided greater depth perception than any other orientation. Discusses possible contributions of observer experience and height of visual field. (DSK)

Traces the development of artistic ability in a six-year-old boy with autism and mild mental retardation. Addresses questions concerning autism and artistic development including whether intellectual realism is a necessary precursor to visual realism and whether a two-dimensional photographic memory is used as opposed to three-dimensional…

Analyzes the research strategies, stimuli, subjects, statistical strategies, and relative variables in 34 empirical studies on children's representation of three-dimensional objects. The studies fell into three categories: children's representation of spatial relationships within an object, between two objects, and studies that included both. (MJP)