type T personality

A personality type that take risks. Type Ts tend to be extroverted and creative, and crave novel experiences and excitement; they can be positive (e.g., entrepreneurs) or negative (e.g., sociopaths); mental (e.g., Einstein, Galileo) or physical (e.g., extreme athletes)
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type T personality

Psychology A personality type that takes risks; type Ts tend to be extroverted and creative, and crave novel experiences and excitement. See Extreme sports, Novelty seeking behavior.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.