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Related Experiment Videos

Infants' perception of pictorially specified interposition.

C E Granrud, A Yonas

    Journal of Experimental Child Psychology
    |June 1, 1984
    PubMed
    Summary

    Seven-month-old infants demonstrate sensitivity to pictorial interposition, a depth cue. Five-month-olds did not show this ability, suggesting depth perception develops between these ages.

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    Child development·1993

    Area of Science:

    • Developmental Psychology
    • Infant Perception
    • Visual Development

    Background:

    • Understanding how infants perceive depth is crucial for developmental psychology.
    • Pictorial depth cues, like interposition, inform object recognition and spatial awareness.
    • Previous research suggests a developmental timeline for infants' sensitivity to visual information.

    Purpose of the Study:

    • To investigate the age at which infants develop sensitivity to pictorial interposition.
    • To determine if 5- and 7-month-olds can use interposition as a depth cue.
    • To compare infant responses to interposition displays with control conditions.

    Main Methods:

    • Two experiments were conducted using 5- and 7-month-old infants.
    • Reaching behavior was the primary dependent measure.
    • Infants viewed flat displays simulating overlapping surfaces and control stimuli.

    Main Results:

    • Seven-month-olds showed a significant preference for reaching towards the nearer side of interposition displays.
    • Five-month-olds did not exhibit differential reaching preferences between interposition and control displays.
    • Five-month-olds' reaching may have been influenced by nonspatial stimulus variables.

    Conclusions:

    • Seven-month-old infants are sensitive to pictorial interposition.
    • Five-month-old infants do not show sensitivity to pictorial interposition.
    • Sensitivity to pictorial depth information emerges between 5 and 7 months of age.

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