Some effects of introducing and withdrawing knowledge of results early and late in practice.

Principles of Behavior

1944 • 4,124 citations

Variable frequency of knowledge of results and the learning of a simple skill.

1958 • 138 citations

The Effect of Knowledge of Results on Learning and Performance IV. The Direction of the Error in Very Simple Skills

1951 • 15 citations

A Device for Presenting Knowledge of Results as a Variable Function of the Magnitude of the Response

1953 • 11 citations