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Related Experiment Videos

Play: early and eternal.

C E Mears, H F Harlow

    Proceedings of the National Academy of Sciences of the United States of America
    |May 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    This study identified self-motion play, or peragration, as a primary primate play behavior in rhesus monkeys. Individual self-motion play emerged earlier and more frequently than social play, with apparatus aiding social engagement.

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    Area of Science:

    • Primate Ethology
    • Developmental Psychology
    • Behavioral Biology

    Background:

    • Play behavior is crucial for development in many species.
    • Understanding the origins and patterns of primate play offers insights into social and cognitive development.
    • Previous research has not fully characterized the fundamental forms of primate play.

    Purpose of the Study:

    • To systematically investigate the development of play behavior in rhesus monkey infants over 12 weeks.
    • To identify and examine a basic form of play, termed self-motion play (peragration).
    • To analyze the developmental relationships between individual and social self-motion play, and the role of apparatus.

    Main Methods:

    • A 12-week observational study of eight socially reared rhesus monkey infants.

    Related Experiment Videos

  • Categorization of self-motion play into five distinct patterns.
  • Comparison of individual versus social peragration play frequency and timing.
  • Assessment of the influence of apparatus on play behavior.

    • Main Results:

    • Self-motion play (peragration) was identified as a primary play form, distinct from locomotion and exploration.
    • Individual self-motion play appeared earlier and increased in frequency more than social self-motion play.
    • Apparatus was essential for significant increases in social self-motion play.
    • Self-motion play was independent of other play forms between 90 and 180 days of age.

    Conclusions:

    • Self-motion play is a fundamental and persistent primate play behavior with potential reinforcing properties.
    • The development of self-motion play follows distinct individual and social trajectories, influenced by environmental factors like apparatus.
    • Findings suggest therapeutic implications for self-motion play in primate development.