Optimal length for summary knowledge of results: the influence of task-related experience and complexity.

Because manipulations of knowledge of results (KR) are critical to motor learning, researchers have attempted to establish an optimal length for summary KR. Experiment 1 of the present study investigated the option that optimal summary length may be dependent on a subject's task-related experience. Participants in a summary 1, 5, or 15 condition practiced a simple striking task for one session on three consecutive days with each day followed by a 24-hour no KR retention test. The retention test results indicated that optimal summary length is dependent on task-related experience. Experiment 2 investigated the nature of the relationship between task-related experience and complexity and optimal summary length (summary 1, 5, or 15). Again, striking tasks (simple and complex) were used. There was one practice session with either a simple or complex striking task for either novice or experienced performers, followed by a 24-hour no KR retention test. Data from the two experiments suggest that task complexity and performer experience interact in determining optimal summary length.

[1]  R. Schmidt,et al.  Knowledge of results and motor learning: a review and critical reappraisal. , 1984, Psychological bulletin.

[2]  T. D. Lee,et al.  Contextual interference in movements of the same class: differential effects on program and parameter learning. , 1993, Journal of motor behavior.

[3]  C H Shea,et al.  Summary knowledge of results. , 1991, Research quarterly for exercise and sport.

[4]  J. Adams.  Historical review and appraisal of research on the learning, retention, and transfer of human motor skills. , 1987 .

[5]  K. Newell.  Knowledge Of Results And Motor Learning , 1976, Exercise and sport sciences reviews.

[6]  J. J. Lavery.  Retention of simple motor skills as a function of type of knowledge of results. , 1962 .

[7]  D. E. Young,et al.  Augmented feedback for enhanced skill acquisition , 1992 .

[8]  Paul M. Fitts,et al.  Perceptual-Motor Skill Learning1 , 1964 .

[9]  D. C. Shapiro,et al.  Information Feedback for Skill Acquisition: Instantaneous Knowledge of Results Degrades Learning , 1990 .

[10]  R. Schmidt.  A schema theory of discrete motor skill learning. , 1975 .

[11]  Richard A. Schmidt,et al.  Optimizing summary knowledge of results for skill learning , 1990 .

[12]  Timothy D. Lee.  Chapter 7 Transfer-Appropriate Processing: A Framework for Conceptualizing Practice Effects in Motor Learning , 1988 .

[13]  J. Adams,et al.  A closed-loop theory of motor learning. , 1971, Journal of motor behavior.

[14]  J. R. Thomas,et al.  What is missing in p less than .05? Effect size. , 1991, Research quarterly for exercise and sport.

[15]  A. Gentile.  A Working Model of Skill Acquisition with Application to Teaching , 1972 .

[16]  Stephan P. Swinnen,et al.  Summary knowledge of results for skill acquisition: support for the guidance hypothesis , 1989 .

[17]  M G Fischman,et al.  Motor skill acquisition and retention as a function of average feedback, summary feedback, and performance variability. , 1994, Journal of motor behavior.

[18]  Charles H. Shea,et al.  Contextual interference: Contributions of practice , 1990 .

[19]  Richard A. Schmidt,et al.  The learning of generalized motor programs: Reducing the relative frequency of knowledge of results enhances memory. , 1989 .