Psychomotor performance is fundamental to human existence. It is important in many real world activities and nowadays psychomotor tests are used in several fields of industry, army, and medical sciences in employee selection. This article tries to define psychomotor activity by introducing some psychomotor theories. Furthermore the interrelationship between psychomotor, cognitive, and affective area is researched. It seems that there occurs a significant correlation between psychomotor and cognitive area, but between psychomotor and affective tests only a small correlation was found.