Treating Type A behaviours and mild hypertension in middle-aged men. 
Unmedicated mildly hypertensive Type A men were randomly allocated to one of three conditions: stress management intervention training (N = 15), Type A management (N = 15), and delayed Type A management intervention.  Significantly greater reductions in blood pressure at rest and during the Type A structured interview were found following the active interventions than during the minimal treatment control period of the delayed intervention.  Type A management was more successful in changing a number of Type A behaviours, including anger, hostility and global Type A behaviour.  Changes on measures of anger-in, -out, hostility, and SI ratings of Type A behaviour were associated with changes in systolic and diastolic blood pressure reactivity during interview.