Type A personality: n. a set of stable characteristics that include a high need for achievement, competitiveness, urgency, and hostility.
In 1959, a study by Meyer Friedman and R.H. Rosenman concluded that Type A behavior was a potential risk factor for coronary heart disease (CHD). However, follow up studies found that only certain traits - particularly bottled-up hostility and aggression - were positively linked to the contraction of CHD.
The contrasting personality type to Type A is Type B personality, which is characterized by a relaxed, laid back attitude and the tendency to express emotions. Most people lie on a continuum between the two extremes of these personalities. To assess where you are, take this short questionnaire.
- Eysenck, H.J. (1990). Type A Behavior and Coronary Heart Disease: The Third Stage. Journal of Social Behavior and Personality, 5, 25-44.
- Friedman, M.; Rosenman, R. (1959). "Association of specific overt behaviour pattern with blood and cardiovascular findings". Journal of the American Medical Association (169): 1286–1296.
- McLeod, S. A. (2011). Type A Personality. Retrieved fromhttp://www.simplypsychology.org/personality-a.html
- Riggio, R.E. (2012, June 29). Are You a Type A or a Type B Personality? Retrieved February 8, 2013, from Psychology Today's website: http://www.psychologytoday.com/blog/cutting-edge-leadership/201206/are-you-type-or-b-personality.