Why the study?
Is Type A behavior heritable in middle-aged American male twins?
Is Type A behavior heritable in middle-aged American male twins?
Type A behavior, a known risk factor for coronary heart disease, appears to be nonheritable when assessed by interview, suggesting environmental rather than genetic origins.
No takes yet. Share an insight, caveat, or question.
Supports environmental focus for interview-assessed Type A in CHD risk; leaves open heritability of correlated psychological scales.
Rahe et al. (1978) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: