- S: (adj) anal, anal retentive (a stage in psychosexual development when the child's interest is concentrated on the anal region; fixation at this stage is said to result in orderliness, meanness, stubbornness, compulsiveness, etc.)
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.
Because of these characteristics, Type A individuals are often described as "stress junkies" by individuals with Type B or other personality types. Many successful business and political leaders have Type A personalities.