Motor Control and Feedback (Part 3)
April 12th 2011 05:06
Types of Augmented Feedback
Almost all of the authors of literatures featuring motor control and learning agree that there are two types of augmented feedback: knowledge of result (KR) and the knowledge of performance (KP). While KR focuses on feedback about the result or outcome of the learner’s activity, KP provides information on the movement pattern used to achieve the goal.
For example, we are to teach a patient with right below knee amputation to perform three-point gait with the use of crutches, giving feedback in the form of KR means we are to let him know of the distance he was able to travel, or speed that he was able to reach our target distance. But if we are to use KP, we now shift our focus to providing information about how he moves both crutches and how he swings his left lower extremity. This time we are more focused on the biomechanical components of the task being accomplished.
Guadagnoli and Kohl (2001) favors the use of KR in learning a new motor task. However Thorpe admits that some inconsistencies exist, since she quoted Schmidt and Lee’s statements believing that KP is the most powerful and effective type of feedback in motor learning. Nevertheless Magill, another author quoted by Thorpe, cited a condition in using KP. According to him, KP is required specifically if the skill requires high-level movement.
For the next part of the discourse let us examine which of these feedback types is proven by literatures to be superior among others.
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