Development and testing of a new hostility scale.

Evidence suggests that assessment of global type A behaviour as a coronary risk factor may not be the most fruitful strategy because some components, particularly hostility, may be more harmful than others. Measurement of hostility has been primarily through two types of instrumentation: the Type A Structured Interview (SI) and the Cook-Medley (Ho) scale. Deficiencies in the measurement of hostility have resulted from a lack of conceptual...