Studied infant ability to extract depth information from a three-dimensional structure. Found evidence that 8-month-old infants distinguished between lines indicating edges, and lines indicating markings, and that they are able to use line junctions to perceive line drawings as depicting three-dimensional objects in the picture plane. (Author)

This study concerns children's understanding of spatial relationships and their expression in drawings and photographs. Sixty children (ages 5, 8, and 11) were asked to discriminate and reproduce three types of depth relationships in either drawings or photographs: enclosure, where a larger object is placed directly behind a smaller object;…

Tries to unravel some of the problems concerning the previous finding that increasing the number of depth cues in pictures has a depressing effect on spatial accuracy of three dimensional reconstruction of pictures. Evidence does not support a deficiency in perceiving pictorial depth in African children. (AM)

Discussion of stereoscopic and planoscopic diagrams as they relate to the level of understanding in depth relationships. Findings indicate a significantly lower understanding in stereoscopic diagrams when compared to a real three-dimensional situation. (JEG)

Tests of 172 fourth grade students in Zaria, Nigeria, supported the hypotheses that non-Western subjects' difficulties in judging depth in linear pictures are a function of individual perceptual organization, and that training could improve field independence and depth perception. Discusses child-rearing practices that may increase field…

The degree of correlation existing between visual screening results obtained from the Keystone Visual Survey Telebinocular and the Titmus Biopter Vision Test was discussed. A sample of 59 children admitted to the University of Miami Reading Clinic during the 1969 summer session was used. They ranged in age from 7 to 16. All subjects were…