How we change what others think, feel, believe and do
Type A and Type B
A simple division of preference or personality type is into Type A and Type B, which is based broadly on anxiety and stress levels.
The Type A personality generally lives at a higher stress level. This is driven by
The Type B personality generally lives at a lower stress level and are typically:
This typing was first described in relation heart disease in the 1950s by cardiologists Meyer Friedman and R. H. Rosenham. It subsequently appeared in the Jenkins Activity Survey, which was originated to detect behaviors which lead to heart attacks (Jenkins, Ayzanski, Rosenman, 1971).
Dr. Redford Williams, a cardiologist at Duke University, later showed that the main hazard in this is when the Type A person has a tendency to anger and hostility
A subsequent study has challenged even this, throwing the whole validity of this typing as a predictor of heart attacks into doubt.
Nevertheless, it is a simple typing difference and perhaps aligns with the Big Five factor of 'neuroticism', or tendency to anxiety.
In the Jungian Type Inventory, Type A looks more left-side STJ whilst Type B might be more right-side NFP.
In use, you might notice your own tendencies towards anxiety and stress which, whilst not necessarily leading to heart attacks, can still lead to many stress-related disorders.
In persuading others the tendency towards A or B will affect your strategy. Whilst challenging a Type A would likely be very effective, it would not with Type B (where a more reflective conversation could be a better approach).
Friedman, M. (1996). Type A Behavior: Its Diagnosis and Treatment. New York: Plenum Press (Kluwer Academic Press)
Jenkins, C.D., Zyzanski, S.J., & Rosenman, R.H. (1971). Progress toward validation of computer-scored test for the type A coronary-prone behavior pattern. Psychosomatic Medicine, 33, 193-202