Watch and learn: seeing is better than doing when acquiring consecutive motor tasks.

Area of Science:

• Motor learning and control
• Cognitive psychology
• Neuroscience

Background:

• Consecutive physical practice of different motor tasks can lead to interference, negatively impacting the retention of the initial task.
• Observational practice shows potential for aiding skill acquisition without causing such interference.

Purpose of the Study:

• To compare the effects of observational versus physical practice on the retention and acquisition of multiple motor tasks.
• To investigate whether observational practice prevents the interference typically seen with repeated physical practice.

Main Methods:

• Participants were assigned to groups: observing all tasks, performing all tasks, performing Task A then observing Task B, or performing Task A and not observing Task B.
• All groups practiced in a visually rotated environment (Task A: clockwise, Task B: counterclockwise).
• Retention of Task A and acquisition of Task B were assessed immediately after practice.

Main Results:

• Groups that utilized observational practice (Observe-all, ObsB) demonstrated better retention of Task A compared to the group that physically practiced both tasks (Act-all).
• Only the observational practice groups successfully learned Task B.
• Reaction time (RT) data and explicit awareness suggested observers employed more strategic learning than actors.

Conclusions:

• Observational practice is superior to physical practice for learning multiple tasks due to reduced interference.
• Observational learning may involve less updating of implicit internal models for motor aiming compared to physical practice.