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Related Experiment Videos

The ability to activate and inhibit speeded responses: separate developmental trends.

G P Band1, M W van der Molen, C C Overtoom

  • 1University of Amsterdam, Amsterdam, The Netherlands. band@psy.uva.nl

Journal of Experimental Child Psychology
|March 4, 2000
PubMed
Summary

As children age, their response speed improves, but inhibitory control develops less significantly. A nonselective response inhibition mechanism appears fully developed in early childhood.

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Area of Science:

  • Cognitive Development
  • Developmental Psychology
  • Neuroscience

Background:

  • Older children exhibit faster reaction times and reduced susceptibility to interference from irrelevant information.
  • Developmental changes in response speed and inhibitory function are hypothesized to be linked to a global mechanism.

Purpose of the Study:

  • To investigate generalized developmental changes in response activation speed.
  • To examine the developmental trajectory of inhibitory function in children and young adults.
  • To test the hypothesis that inhibitory function underlies the ability to activate speeded responses.

Main Methods:

  • Compared performance across four age groups (5, 8, 11-year-olds, and young adults).
  • Utilized a battery of six speeded performance tasks.

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  • Four tasks specifically required the inhibition of response activation.

    • Main Results:

    • Analysis supported a hypothesis of generalized developmental changes in response activation speed.
    • Inhibition showed less pronounced developmental changes compared to response activation.
    • Reaction times and inhibition times were analyzed to assess developmental trends.

    Conclusions:

    • Generalized developmental changes in response activation are evident.
    • Inhibitory function development is less pronounced than response activation development.
    • A nonselective mechanism for response inhibition seems to be fully developed in early childhood.