37 根據 Gray 的理論，行為抑制系統（behavioral inhibition system, BIS）與酬賞系統的失衡可用 來解釋心理病態者（psychopath）的行為，這兩個系統在心理病態者身上的特性為：
(A)行為抑制系統活動高，酬賞系統活動高
(B)行為抑制系統活動高，酬賞系統活動低
(C)行為抑制系統活動低，酬賞系統活動高
(D)行為抑制系統活動低，酬賞系統活動低

Abnormal Psychology CH12 P.458

The BIS is responsible for our ability to stop or slow down when we are faced with impending punishment, nonrewardm or novel situations; activation of this system leads to anxiety and frustration. The BIS is thought to be located in the septohippocampal system and incloves the noradrenergic and serotonergic neurotransmitter systems.

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If you think about the behavior of psychopaths, the possible malfunctioning of these system is clear. An inbalance between the BIS and the reward system may make the fear and anxiety produced by the BIS less apparent and the positive feelings associated with the reward system more prominent.