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Chapter 6. Section 5: Perceptual Powers: Origins & Influences. Inborn Abilities. Infants Distinguish between sweet & salty & discriminate between odors Distinguish human voices from other sounds. Startle to a loud noise & turn their head towards a sound
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Chapter 6 Section 5: Perceptual Powers: Origins & Influences
Inborn Abilities • Infants • Distinguish between sweet & salty & discriminate between odors • Distinguish human voices from other sounds
Startle to a loud noise & turn their head towards a sound • Discriminate size & color, contrast, shadows, & complex patterns
The Visual Cliff • Devised by Eleanor Gibson and Richard Walk to test depth perception
Glass surface, with checkerboard underneath at different heights • Visual illusion of a cliff • Baby can’t fall • Mom stands across the gap. • Babies show increased attention over deep side at age 2 months, but aren’t afraid until about the age they can crawl.
Critical Periods • If an infant misses out on certain experiences during a critical window of time, perception will be impaired • Innate abilities will not survive • When adults who have been blind from infancy have their vision restored, may see, but not well • Poor depth perception
Perceptual powers are both “wired in “ & dependent on experience
Psychological & Cultural Influences on Perception • Because we care about what we see, hear, taste, smell, & feel, psychological factors can influence what we perceive & how we perceive it • Needs- when we need something, have an interest in it, or want it, we are likely to perceive it