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"Inner" darts: effects of mental practice on performance of dart throwing.

To explore the effects of mental rehearsal on the performance of a motor skill, 32 college undergraduates were scored on dart-throwing ability and randomly assigned to one of 4 practice conditions: no-practice controls, mental rehearsal only, mental rehearsal with simulated dart-throwing motor movements, and direct physical practice. Following 6 days of mental or physical practice by the experimental groups, the performance level on the dart-throwing task was again measured for all subjects. Comparison of improvement showed statistically significant differences between the groups. Follow-up tests showed that all experimental groups differed significantly from the no-practice group, there were no significant differences between mental practice groups and direct physical practice resulted in improvements significantly higher than any other form of practice.

Adult

Not just when, but how: An exploratory dual-control approach to video feedback in motor learning.

The present study provides exploratory evidence for a novel dual-control paradigm. It examines whether combining temporal over video feedback timing with learner-controlled interactive playback functions (pause, slow-motion, rewind) would enhance motor skill acquisition beyond temporal autonomy alone. Sixty-four novice adults were randomly assigned to one of four conditions: Full Control (self-controlled timing + interactive replay), Partial Control (self-controlled timing + non-interactive replay), Yoked Full Control (externally controlled timing + interactive replay), or Yoked Partial Control (externally controlled timing + non-interactive replay). Motor accuracy (Radial Error), movement consistency (Bivariate Variable Error), technical execution, and self-efficacy were assessed at pre-test, 24-h retention, and 72-h retention following two acquisition sessions on a dart-throwing task (120 trials total). The Full Control group demonstrated the greatest and most durable learning gains across all outcomes. The Group × Time interaction was significant across all dependent variables (η2ₚ ranging from 0.140 to 0.234), with Full Control demonstrating superior retention at both 24 and 72 h relative to other groups (though differences relative to Partial Control were more pronounced at 72-h retention). Critically, the Yoked Full Control group showed comparatively weaker outcomes despite access to the same interactive playback functions. These findings suggest that interactive video tools may be most useful when learners can regulate both when feedback is accessed and how it is inspected. Theoretical and practical implications for the design of learner-centered video feedback systems are discussed.

Humans