Feedback-Induced Variability and the Learning of Generalized Motor Programs.

As compared with providing extrinsic feedback on each of a set of practice trials, reducing the feedback frequency in various ways facilitates long-term retention. One explanation is that frequent feedback operates proactively on the subsequent trial, inducing excessive variability that degrades learning. We tested this view by giving or not giving feedback "reminders," where the postresponse feedback was given again just before the next attempt at a task. The reminder manipulation was examined in both blocked and randomized practice sequences during the learning of three limb-patterning tasks. Reminder feedback increased response variability during practice in both random and blocked practice. As measured in retention tests, though, feedback reminders degraded learning in random practice, but not in blocked practice. This implies that the frequently found learning advantages of random, as compared with blocked, practice might be due to feedback's facilitation of retrieval operations in blocked practice (as well as in random practice with feedback reminders); such overfacilitation of retrieval operations has been shown to degrade learning. Additional analyses revealed that random, as compared with blocked, practice enhanced the learning of the fundamental pattern of action (generalized motor program) but had little effect on the ability to scale the pattern in amplitude or time (parameterization).

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

[2]  R. Schmidt,et al.  Augmented Kinematic Feedback for Motor Learning. , 1992, Journal of motor behavior.

[3]  I. Bilodeau,et al.  Variation of temporal intervals among critical events in five studies of knowledge of results. , 1958, Journal of experimental psychology.

[4]  Diane Elizabeth Nicholson.  Information feedback disrupts performance stability , 1992 .

[5]  R. Schmidt,et al.  Units of Action in Motor Control: Role of Response Complexity and target Speed , 1995 .

[6]  Tina E. Gabriele,et al.  Cognition in motor learning: Imagery effects on contextual interference , 1989 .

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

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

[9]  Timothy D. Lee,et al.  Motor Control and Learning: A Behavioral Emphasis , 1982 .

[10]  Edward A. Bilodeau,et al.  Acquisition of Skill , 1967 .

[11]  S. A. Wallace,et al.  Knowledge of performance and the learning of a closed motor skill. , 1979, Research quarterly.

[12]  H. Zelaznik,et al.  Motor-output variability: a theory for the accuracy of rapid motor acts. , 1979, Psychological review.

[13]  Richard A. Schmidt,et al.  Frequent Augmented Feedback Can Degrade Learning: Evidence and Interpretations , 1991 .

[14]  Eric Buckolz,et al.  Practice schedule effects on the acquisition and retention of a motor skill , 1987 .

[15]  R. Schmidt,et al.  New Conceptualizations of Practice: Common Principles in Three Paradigms Suggest New Concepts for Training , 1992 .

[16]  Edward A. Bilodeau,et al.  Theory and data on the interrelationships of three factors of memory. , 1962 .

[17]  Richard A. Schmidt,et al.  Motor learning & performance : from principles to practice , 1991 .

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

[19]  R. Schmidt,et al.  Reduced frequency of knowledge of results enhances motor skill learning. , 1990 .

[20]  R. Magill,et al.  A REVIEW OF THE CONTEXTUAL INTERFERENCE EFFECT IN MOTOR SKILL ACQUISITION , 1990 .

[21]  D. C. Shapiro,et al.  Summary knowledge of results for skill acquisition: support for the guidance hypothesis. , 1989, Journal of experimental psychology. Learning, memory, and cognition.

[22]  C. Winstein.  Knowledge of results and motor learning--implications for physical therapy. , 1991, Physical therapy.

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

[24]  Heiner Deubel,et al.  Reduced feedback frequency enhances generalized motor program learning but not parameterization learning , 1993 .

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

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