Subjects with higher "actor's" mark are characterized, on the one hand, by relatively higher intensity of voluntarily generated emotional reactions and, on the other hand, by higher adequacy (accuracy in content and in time) of such reactions in relation to the current of images which stimulate them. Measures of intensity and adequacy of voluntarily produced emotional reactions are positively correlated with professional efficiency of the subjects. It is possible to assume therefore that the regularities of emotional reactivity revealed in the study are significant indicators of the predisposition for the activity of acting.