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Effects of extended practice in a one-finger keypressing task
1TNO Institute for Perception, Soesterberg, The Netherlands.
Acta Psychologica
|November 1, 1993
Summary
With practice, rapid keypress sequences become more concurrent, allowing faster execution. Attentional demands decrease, enabling more parallel processing of movement sequences.
Area of Science:
- Cognitive Psychology
- Motor Control
- Neuroscience
Background:
- Skilled motor sequences require precise timing and coordination.
- Practice is known to improve the efficiency of motor skill execution.
Purpose of the Study:
- To investigate how practice affects the timing and concurrency of processes in rapid keypress sequences.
- To examine the role of attention in preparing and executing movement sequences.
Main Methods:
- Participants performed a three-keypress sequence task.
- Dual-task interference was used to assess attentional demands.
- The effects of practice on sequence execution timing were analyzed.
Main Results:
- Practice shifted the preparation of the third keypress to occur earlier, overlapping with the second keypress.
- No evidence suggested concurrent selection of later stimulus-dependent keys during earlier stimulus-independent keypresses.
- Dual-task interference showed minimal reduction with practice, indicating attention is still needed for preparation and execution.
Conclusions:
- Faster execution of practiced movement sequences is attributed to increased concurrent processing.
- Reduced attentional demands from individual subprocesses are reallocated to enhance concurrency.
- Practice optimizes motor sequences by enabling parallel execution of component processes.