中学生非正式群体心理成因及其引导文艺飞所谓非正式群体，是指由于情趣一致或爱好相仿、利益接近或观点相同、彼此需要等原因自然形成的，以心理或情感力量维系的群体。非正式群体不同于正式群体，它的正规化程度低，其成员间的互动采用随意的、非常规化的方式，成员的权... Psychological Causes of Informal Groups of Middle School Students and Their Guidance of Literary and Artistic Filings The so-called informal groups refer to groups formed by psychological or emotional forces due to their similar or similar interests, similar interests or the same viewpoints. Informal groups, different from formal groups, have a low degree of formality and have a random, unconventional way of interacting with their members ...