’ The Effect of Students Participation in Scientific and Cultural Activities on their Feeling of Change in Interaction with Their Families Hossein Behravan Associate professor, Department of Social Sciences, Faculty of Letters & Humanities, Ferdowsi University of Mashhad Behravan@um.ac.ir Ali Behravan behravanali@aol.com Undergraduate Student, Department of Mechanics, Faculty of Engineering, Ferdowsi University of Mashhad This article aims to answer the questions: 1-”How much students feel change in interaction with their family after entering university compared with before?” 2“Do student’s participation in scientific and cultural activities in campus is correlated to the feeling of change in interaction with their families?” The method was survey and the sample size was 406 undergraduate students of all fields of study, genders and years of entrance, at Ferdowsi University of Mashhad Campus. Sampling strategy consisted of proportionate stratified, cluster, multistage, and random sampling techniques. Data was gathered by standard self administered questionnaire. The measure of student’s feeling change in interaction with their family had two dimensions: 1- change of values (giving respect to parents and giving importance to family), 2- change of behavior (subordination of parents). Results indicated that 90.5 percent of students felt positive change, 2.4 percent felt negative change and 7.1 percent felt no change in the interaction with their family after entering university compared with before. The more student’s participation in cultural campus activities, the more positive measure of change in the interaction with their family (r=0.23) and also, the more student’s participation in scientific activities, the more positive measure of change in the interaction with their family (r=0.10). Furthermore, results showed that the more student’s participation in cultural campus activities the more student’s participation in scientific activities (r=0.29). Key words: Participation-Student-Family-Campus-Change.