Psychology 1000 November 8, 2016
Questions to be answered:
➢ Depth perception How do we perceive depth?
➢ Size constancy
➢ Perceptual problem solving What happens after we determine object distance?
How do we figure out what we’re looking at?
Next time: Sleep
Scan: p. 182-196
• Binocular cue: retinal disparity
• Monocular: relative size, overlap, linear perspective, texture gradient
• Size constancy
➢ Re-scale the size of objects so that they remain constant at any distance
➢ Learned (first couple of months)
➢ Many visual illusions reflect inappropriate scaling
➢ Retinal size pitted against linear perspective
➢ The Muller-Lyer Illusion: arrows
o We live in a “rectangular world”
➢ Door- as you move, changes shape
Perceptual problem solving:
• How do we recognize and make sense of patterns?
• Constructionists: create meaning from basic elements or features
• Feature an