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Stereopsis and Artistic Talent

Stereopsis is the perception of depth generated from differences between the two eyes' views of a single image; this difference is termed disparity. When artists learn to draw, they are often instructed to close one eye; this defeats stereopsis and makes monocular depth cues—such as perspective, occlusion, and shading—more apparent. In this study, we tested the hypothesis that poor stereopsis might therefore be an asset to someone whose goal is to represent the three-dimensional world on two-dimensional surfaces (Livingstone & Conway, 2004).