本文试从心理学发展史和人类认识史的角度,通过考查三分法与二分法的提出及其历史发展,阐述三分法的历史合理性,二分法的现实合理性,以及用二分法代替三分法是心理科学发展的必然趋势。 This article tries to elaborate the historical rationality of the trichotomy, the realistic rationality of the dichotomy by examining the proposition and the historical development of trichotomy and dichotomy from the perspective of the history of psychology and the history of human cognition, Trichotomy is an inevitable trend in the development of psychology.