TYPE A BEHAVIOUR: Respond to stress with impatience + time urgency, hostile + aggressiveness and competitive + achievement striving. Characteristics= lead to raised blood pressure and raised levels of stress hormones- linked to ill health (CHD)
TYPE B BEHAVIOUR: Lacking Type A behaviour- easy-going, patient, relaxed. Decreases individuals risk of stress-related illness
- Friedman and Rosenman: Apprx. 3000 men aged 39-59 in California
- Examined for signs of CHD (to exclude those who were found to be ill) & personality assessed by interview
- In the interview: questions about how they respond to everyday pressures. E.g. hot they would cope standing in a long queue
- Interview in a provocative manner to trigger Type A behaviour. E.g. interviewer would speak slowly so a Type A would want to interrupt
- Found: after 8 and a half years later twice as many Type A's died of heart attacks (12%) compared to 6% of Type B's
- Type A= higher bp + cholesterol
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