Randomization Method
Based on data from our baseline survey in September, we will randomly assign all participating students into 13 groups. To account for differences across study fields, randomization will be stratified by study field. The sample consists of approximately 10,000 students from 279 classes across 8 schools, covering nearly 200 majors. We group these majors into study fields according to the classification system established by the Ministry of Education of China. In total, there are 27 study fields, with 17 from higher vocational colleges and 10 from universities (compared to a total of 19 in higher vocational colleges and 12 in universities).
Within each study field, we will generate a random integer between 1 and 13 using a uniform distribution, and students will be assigned to different experimental groups based on the number they receive. For students receiving both market and peer information, the order of information presentation will be further randomized: half will receive market information first, and the other half will receive peer information first.