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The contextual interference effect for skill variations from the same and different generalized motor programs

H Sekiya1, R A Magill, B Sidaway

  • 1Department of Kinesiology, Louisiana State University.

Research Quarterly for Exercise and Sport
|December 1, 1994
PubMed
Summary
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The contextual interference effect in motor learning arises from parameter learning, not generalized motor program construction. This finding modifies existing hypotheses about how task variations impact skill acquisition.

Area of Science:

  • Motor Learning
  • Cognitive Psychology
  • Human Movement Science

Background:

  • The contextual interference (CI) effect suggests that learning is enhanced by practicing various tasks in a random order.
  • Magill and Hall (1990) hypothesized that the CI effect depends on task variations being governed by different generalized motor programs (GMPs).

Purpose of the Study:

  • To test the hypothesis that the CI effect is contingent upon task variations governed by different generalized motor programs (GMPs).
  • To differentiate the roles of parameter modification and GMP construction in the CI effect during motor skill acquisition.

Main Methods:

  • Two experiments involved 36 participants learning variations of a tapping task with either different or the same relative timing structures.
  • Participants completed 270 acquisition trials with knowledge of results (KR) in blocked or serial orders, followed by 30 retention trials without KR.

Related Experiment Videos

  • Data analysis dissociated errors from parameter modifications and GMP construction to identify their contribution to the CI effect.

    • Main Results:

    • A significant CI effect was observed in both experiments, but it was solely attributable to errors in parameter learning.
    • Generalized motor program (GMP) construction did not produce a CI effect, regardless of whether task variations shared the same or different timing structures.
    • Parameter learning consistently led to a CI effect, whereas GMP learning did not.

    Conclusions:

    • The CI effect in motor learning is primarily driven by the process of parameter modification, not GMP construction.
    • The findings necessitate a modification of the Magill and Hall (1990) hypothesis to account for the distinct contributions of parameter learning and GMP development.
    • Understanding these separate processes is crucial for optimizing motor skill acquisition strategies.