１什么是心理迟钝？人们关于心理迟钝的定义很不确定，原因有三，一是广大的研究者的研究方面或侧重点不同，而且心理迟钝本身的范围也比较广。二是研究者的理论倾向差异较大，有的侧重于心理方面的理论，有的侧重于生理方面的理论。三是心理受先天的因素的影响很大，对心理迟 1 What is mental retardation? People’s definition of mental retardation is very uncertain, for three reasons. First, the majority of researchers research or focus on different points, and the scope of mental retardation itself is relatively wide. Second, researchers tend to have quite different theoretical tendencies, some focusing on psychological theories and others on physiological theories. Third, psychology is greatly influenced by innate factors, late to the psychological