The relation of light intensity to accuracy of depth perception

Abstract

A modified Howard-Dolman depth perception apparatus was used with college students in 4 experiments with N's of 80, 30, 30, and 50 respectively. "1. In terms of averages alone, it appears that Ss were more accurate in depth perception with greater illumination rather than with less. 2. Analyses of our data, however, show that from one-fifth to one-fourth of our Ss were more accurate with less rather than with more intense illumination. 3. It appeared that no one intensity of illumination was optimal for all Ss." (PsycInfo Database Record (c) 2025 APA, all rights reserved)