Because while many people now use the term Type A as a badge of honor, the two men were cardiologists, and they invented the term Type A to describe stressed patients who were at a higher risk of heart attack, stroke, and other cardiovascular conditions.

Where does the term Type A personality come from?

History. Type A personality behavior was first described as a potential risk factor for heart disease in the 1950s by cardiologists Meyer Friedman and Ray Rosenman.

Where does type A and B personality come from?

Having a type A personality has become shorthand for a certain sort of competitive or domineering person, but what does it really mean? Type A and type B personality theory was created by a pair of cardiologists. In the 1950s, Meyer Friedman and RH Rosenman were researching the possible causes of coronary disease.