n. the other of two motivational systems which govern human and animal behavior. The system activates an avoidance behavior as a response to perceived threat. Thus, it generates a negative affective response which could turn chronic and result in introversion. Proposed by Bitish psychologist Jeffrey Alan Gray (1934-2004). Compare behavioral approach system.

BEHAVIORAL INHIBITION SYSTEM (BIS): "The Behavioral Inhibition System (BIS) activates an avoidance behavior, and this is in reponse to any potential threat."
Cite this page: N., Pam M.S., "BEHAVIORAL INHIBITION SYSTEM (BIS)," in, April 7, 2013, (accessed September 24, 2021).