尽管在传统上人们对双语能力心存偏见,认为两种语言会造成一定的表达障碍,但近年来比较权威和科学的研究却得出相反的结论,即特定的社会因素是引发双语者表达障碍的根本原因。在认知领域,双语者具有处理语言和非语言符号的更大灵活性;而人们普遍担心的双语能力将导致非正常个性发展的问题与双语学生所处的社会、政治和经济环境密切相关。 Although people have traditionally biased their bi-lingual abilities and perceived that both languages ​​may cause some obstacles to their expression, the comparatively authoritative and scientific studies in recent years have reached the opposite conclusion that certain social factors are barriers to bilingualism The root cause. In the cognitive field, bilinguals have greater flexibility in handling linguistic and non-linguistic signs; while the universally worrisome bilingual ability will lead to problems of abnormal personality development that are closely related to the social, political and economic environment in which bilingual students are located.