Glossary / Lexicon

Type A coronary-prone Behavior cardiologists Friedman and Rosenman (1959, 1974) identified the Type A coronary-prone behavior pattern based on their observations of heart patients who showed a sense of time urgency (always doing more than one thing at the same time), competitiveness, and hostility in their interactions with other people. People with this constellation of personality characteristics were found to have a higher risk for coronary heart disease and stress.