Despite any and all the criticisms of the theory, many people continue to use the terms "Type A" and "Type B" purely to describe personalities, though some still equate the Type A personality with medical disorders like coronary heart disease.
Type A
The theory describes a Type A individual as ambitious, aggressive, business-like, controlling, highly competitive, impatient, preoccupied with his or her status, time-conscious, and tightly-wound. People with Type A personalities are often high-achieving "workaholics" who multi-task, push themselves with deadlines, and hate both delays and ambivalence.
In his 1996 book, Type A Behavior: Its Diagnosis and Treatment, Friedman suggests that Type A behavior is expressed in three major symptoms: free-floating hostility, which can be triggered by even minor incidents; time urgency and impatience, which causes irritation and exasperation; and a competitive drive, which causes stress and an achievement-driven mentality. The first of these symptoms is believed to be covert and therefore less observable, while the other two are more overt.
Type B
The theory describes Type B individuals as perfect contrast to those with Type A personalities. People with Type B personalities are generally patient, relaxed, easy-going, and at times lacking an overriding sense of urgency.
Because of these characteristics, Type B individuals are often described as apathetic and disengaged by individuals with Type A or other personality types