Electromyograph responses and performance success estimates as a function of internal-external control.

For 12 externally scoring college women, marginally significant correlations of EMG recordings with self-estimates of success in tensing forearm muscles (-.50) and with success in relaxing these muscles (-.54) were obtained. Similar correlations for 12 internally scoring women were much smaller. Analysis of variance of means had indicated no differences in ability of these groups to control muscles of the forearm.