User:Mnwashington/sandbox

The theory has its origins in the 1930s, while the Type A–Type B theory arose specifically in 1959 through Friedman & Rosenman.
 * Capitalize the titles
 * Include some pictures or Rosenman and Friedman
 * Include places to test for Type A or Type B
 * Celebrities with Type A and Type B
 * Representation in the media
 * Quotes:

Ball, Carroll, Babor, and Rounsaville (1995) found that definite and important differences exist between Type A and Type B cocaine abusers.

A specific instrument exists for the measures of Type A and Type B personality, namely the Jenkins Activity Survey for Health Prediction. It is noteworthy that more research has been directed toward the characteristics of Type A personalities than it has been to Type B personalities. This is where the greatest interest lies; it is also this group that shows the most extreme characteristics and that is most vulnerable to stress-related illnesses.

Research has indicated that those with Type B personalities are more prone to depression.