Based on the existing research, this paper uses the data of 1 106 students in two high schools in Jiangyan, Jiangsu Province, to study whether this non-market interaction really exists in the micro-environment. What kind of influence does peer group have on students' performance in school? If this influence exists, how big is it?
The results of this paper are as follows:
First, the "peer effect" does exist in this study. However, the "peer effect" does not exist in every subject. Regardless of whether the effect of the school is controlled or not, all the regression results show that students' college entrance examination scores will be positively influenced by the mathematics learning ability of other students in the same class (here, it is expressed by the results of the senior high school entrance examination). However, this phenomenon does not exist in Chinese and English subjects. According to the author's existing knowledge, it is difficult to explain this phenomenon, but the author suspects that it may be related to the nature of the subject. The study of Chinese and English emphasizes the memory and accumulation of knowledge and is less influenced by the outside world. But the study of mathematics is different, and students are easily influenced by the study habits and problem-solving ideas of the same group. High-level peers can often achieve knowledge spillover by answering questions and other ways, and promote the improvement of students' mathematics learning ability.
Secondly, the results of rural students' college entrance examination are not significantly affected by their classmates' learning ability. At the same time, their grades will not be significantly affected by the expectations of other rural students in the class for the future, but will be significantly positively affected by the mathematics scores of other rural students in the class.
Thirdly, whether the effect of the school is controlled or not, girls' college entrance examination scores will not be significantly affected by other girls in the class.
Fourth, in a group with lofty aspirations and lofty goals, it may not have a positive role in promoting students. In fact, many regression results in this paper show that if peers set themselves too high, it will have a negative impact on students' academic performance-people who are closely related to Zhu may not be "red". The author suspects that this negative effect may be due to the high expectations of the same group of people, which has caused great psychological pressure on the production, but has affected his play. After controlling the influence of the school, the regression results of this paper also find that the higher the proportion of students who expect to be admitted to three universities, the greater the negative impact on students' college entrance examination results, which also proves the conclusion that "those who are close to Mexico are black" to some extent.
New progress in research
Peer effect refers to the interaction between equal individuals in various social relations, in which the behavior and results of one individual are influenced by the same group of individuals. The research on this effect has been widely used in pedagogy, public economics and other fields, and has played a great role in some government decisions, such as the allocation of educational resources, the way of tracking students' ability, the issuance of educational vouchers and various anti-poverty and anti-apartheid policies. The existence and function of peer effect are still controversial. Some empirical methods have been used in the existing research on peer effect, but there is not much strong evidence to prove the existence of peer effect. In addition, whether and how the peer effect is nonlinear is still a controversial topic.
Hauksbee's above theory is based on the peer effect, from which we can see that when people are faced with choices, they will be influenced by people in the same group around them, thus changing their choice results. In this way, we should jump out of the same group of people and consider the best choice in many aspects.