Researchers have been working toward isolating a set of psychological risk factors that would reliably predict coronary problems. This coronary-prone behavior pattern, Type A, is characterized by extremes of competitiveness, striving for achievement, impatience, and hostility. Differences were examined between 20 Type A and 20 Type B (non-coronary-prone) females in terms of spontaneous occipital alpha activity. Four measures from a physiograph were obtained: the total amount of time the female produced alpha exceeding 20 microvolts in amplitude, and 30 microvolts; the total numbers of entries into alpha exceeding 20 microvolts, and 30 microvolts. Results revealed that Type B females produced occipital alpha for significantly longer cumulative times during a 10-minute session than the Type A females. Type A and B females did not differ on overall self esteem, as measured by the Tennessee Self Concept Scale, nor on eight of its 11 subscales. (Author/BMW)