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Life-Span Human Development, Fifth Edition, Carol K. Sigelman and Elizabeth A. Rider

Chapter 6

Vision 2

Depth perception

Newborns appear to have size constancy

The visual cliff: Gibson & Walk (1960)

A crawler (7 mo) will not cross the cliff

Can perceive the cliff by 2 months

Fear of drop-off requires crawling

Infants as intuitive theorists: able to make sense of the world

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