Social and Behavioral Sciences Commons^™

Tangible Pictures: Viewpoint Effects And Linear Perspective In Visually Impaired People, Morton A. Heller, Deneen D. Brackett, Eric Scroggs, Heather Steffen, Kim Heatherly, Shana Salik

Morton A. Heller

Perception of raised-line pictures in blindfolded-sighted, congenitally blind, late-blind, and low-vision subjects was studied in a series of experiments. The major aim of the study was to examine the value of perspective drawings for haptic pictures and visually impaired individuals. In experiment 1, subjects felt two wooden boards joined at 458, 908, or 1358, and were instructed to pick the correct perspective drawing from among four choices. The first experiment on perspective found a significant effect of visual status, with much higher performance by the low-vision subjects. Mean performance for the congenitally blind subjects was not significantly different from that …