Fig. 7.

Comparison across experiments of force production during the test for generalization relative to force production at the end of training. Values of 1.0 indicate no change in force production. After training on the 15 cm target, there was no change in force production on 30 cm movements in the absence of interleaved trials. After training that involved 4 interleaved trials to the 30 cm target, there was a slight increase in force production. After training with 19 interleaved trials, there was a reliable increase in force production that was greater than the change in performance shown by the other groups. The bars give mean ± SE.