Effects of rewarded target location and ordinal position of the movement on behavioral performance. The results for each of three movements in a triplet (A, B, C) are shown on the horizontal axis, and the three repetitions of the triplet are shown by white, gray, and black disks (numbered 1, 2, and 3, respectively). Error bars, corresponding to 2× SEM, are shown only when the SEM is larger than the size of the symbol.