Type A

1. of or pertaining to a pattern of behavior characterized by competitiveness, a sense of urgency, impatience, perfectionism, and assertiveness, and possibly associated with an increased risk of heart disease.
2. of or pertaining to a person who exhibits Type A behavior.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

Type II errorType B
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