Discuss when it might be best to provide either knowledge of performance or knowledge of results to a person learning a motor skill.

Explanation:  Knowledge of performance or knowledge of results is given by one who is following the development of one's motor skills, such as an instructor, teacher, trainer, and this is feedback on current achievement, that is, how well one has mastered certain skills. There is an opinion that this kind of feedback makes more sense and is more effective with more advanced performer, because with feedback on a mistake they know what to do and how to fix it and can do it. Beginners, although they have feedback on their performance, will hardly be able to correct their mistake without more detailed instructions from the instructor.