In experiments that compare all-mental practice to all-physical practice and no practice conditions,results typically show that participants in the all-mental practice condition learn the skill:

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Research has shown that while all-mental practice may not be as effective as all-physical practice, it is still better than no practice at all. Therefore, participants in the all-mental practice condition learn the skill not as well as those in the all-physical practice condition but better than those in the no practice condition.

In Experiments That Compare all-Mental Practice to all-Physical Practice and no