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Related Experiment Video

Updated: Feb 16, 2026

Exploring Infant Sensitivity to Visual Language using Eye Tracking and the Preferential Looking Paradigm
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The role of structure in infant visual pattern perception.

G K Humphrey, D E Humphrey

    Canadian Journal of Psychology
    |June 1, 1989
    PubMed
    Summary

    Infants show a clear preference for symmetrical patterns over asymmetrical ones. Vertical symmetry is more noticeable to infants than horizontal symmetry, suggesting early visual system sensitivity to structure.

    Area of Science:

    • Developmental psychology
    • Visual perception
    • Infant cognition

    Background:

    • The role of structural properties in visual pattern perception is a key area of research.
    • Previous studies suggest infants are sensitive to visual patterns.

    Purpose of the Study:

    • To review existing research on infant visual pattern perception and structure.
    • To investigate infant preference for symmetry in visual patterns.
    • To determine if infants show a preference for vertical versus horizontal symmetry.

    Main Methods:

    • Review of prior research on infant visual pattern perception.
    • Presentation of two new experiments involving infant visual stimuli.
    • Data collection on infant visual preferences for symmetrical and asymmetrical patterns.

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  • Comparison of infant responses to vertically and horizontally oriented symmetrical patterns.

    • Main Results:

    • Infants reliably preferred patterns with multiple axes of bilateral symmetry over asymmetrical patterns.
    • Vertically oriented single-axis bilateral symmetry was found to be more salient to infants than horizontally oriented symmetry.
    • This preference mirrors findings in adult visual perception.

    Conclusions:

    • Infant visual systems demonstrate a fundamental sensitivity to pattern structure, particularly symmetry.
    • The salience of vertical symmetry suggests early-developing visual processing mechanisms.
    • Sensitivity to pattern structure reflects fundamental operations of the visual system.