Practice is considered to be the most important factors for acquiring expertise. Studies examining the contextual interference (CI) effect indicate that the practice schedule should also be an important consideration. The CI effect is characterized by the paradoxical finding that experiencing greater CI during practice hinders initial performance but facilitates retention compared to encountering less interference during practice. Current efforts trying to understanding how greater CI helps learning focus on the improvements that occur in movement planning prior to execution. Little effort, beyond rather global assessments, has assessed whether greater CI offers concomitant benefits for movement form. The present study was an initial attempt to examine this issue. In particular we asked whether random (high CI) or blocked (low CI) training differentially impacted the kinematics of a novice's golf putting action. Twenty-four novice golfers practiced putts of four, eight, and twelve feet in either a blocked or random practice schedule. On day 1, blocked practice participants executed 108 putts. Thirty-six putts were performed to one target distance before the next 36 trials to each of the other target distances. Random practice participants randomly performed 12 putts to each target in each of the three set of 36 trials. Prior to practice, all participants completed a pre-test involving ten putts to each target distance performed in a blocked manner. On day 2, a retention test identical to the pre-test on day 1 was administered followed by a transfer test which involved 10 trials to a new target of ten feet. An OPTOTRAK 3020 camera system was used to record the 3D movement of four infrared-emitting diodes attached on the putter head, the participant's head, and their right and left shoulders. Consistent with the CI literature, random practice resulted in greater putting error during the training but less error during the retention and transfer tests compared to those individuals trained in a blocked format. There were numerous aspects of the movement kinematics on which blocked and random practice participants differed that may have contributed to the global error data findings. In particular, following random practice variability in the amplitude of the backswing and downswing on the x-axis (along the target line) was reduced which in turn impacted the consistency of the velocity at impact. Moreover, the random practice participants appeared to reduce extraneous movement of the putter head as indicated by considerably less horizontal movement (i.e., z-axis) than their blocked practice counterparts.Keyword(s): athletics/sports, performance