近年の心理学的研究から,(1)権力を持つ者に生じる心的状態,すなわち社会的勢力感は,対人関係における自己本位的な振る舞いや短絡化・単純化された認知的情報処理を促すこと,(2)そうした効果は当事者が抱く権力観によって調整されることが明らかにされている.本稿は権力が人間の思考・行動に与えるこのような効果についての知見を大綱的に整理したうえで,その経営学的意義について論じる., From recent social psychological researches, it is revealed that power have various influences on human cognition, affect, and behavior. Specifically, a sense of power prompts egocentrism in interpersonal interaction and rash information-processing. In addition, some experiments and surveys report that these effects are moderated by mental representation of power, which mean the portrait of power hold by the individuals. In this paper, these findings about the psychological effects of power on human cognition and behavior are reviewed, and organized into the context of organization studies. It is concluded that a sense of responsibility needs to be fostered for sensible use for power in organizations, because that can bring other-oriented and careful dicision-making in the powerful managers.