In recent years, researchers have tended to make a distinction between knowledge of performance (KP) and KR. KP refers to the ‘nature of the movement produced’ (Schmidt and Lee, 1999, p. 415), such as kinematic information about the movement pattern produced, whereas KR refers to the ‘result produced in terms of the environmental goal’ (Schmidt and Lee, 1999, p. 415), such as the overall movement time or spatial deviation from a target. Even though there might be situations, where KR and KP serve specific and differential functions inthe learning process (e.g. Brisson and Alain, 1996, 1997), in general, it appears that both types of augmented feedback adhere to the same principles in the way they affect the learning of motor skills. Therefore, we will not distinguish between the two in the remainder of this chapter, but rather refer to both as (augmented) feedback, or simply KR.