Written by Pam MS, NCSP | Fact checked by Psychology Dictionary staff 

a behavioral trend which might be correlated with an escalated threat of coronary heart illness. It is marked by impatience and an altered feeling of time impulsency, achievement motivation, competitiveness, aggression and hostility, and polyphasic activity form B behavior.

TYPE A BEHAVIOR: "Type A behavior is thought to be tied to higher occurrences of heart disease due to the increased stress placed on the individual by their self throughout their life."

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