effect of membership in social networks and mental rumination on cogni-tive flexibility of students of University

Background and Aim: The aim was to investigate the effect of membership in social networks and mental rumination on cognitive flexibility of female law students at Islamic Azad University of Ghaemshahr. Method: The research method was correlational.    Sample of 70 law students randomly selected by Krejcie Morgan. Instruments used were: 1. A questionnaire to study the effects of membership in social networks and; 2.  Cognitive flexibility questionnaire (Taghizadeh and Nikkhah) and mental rumination scale questionnaire (Taghizadeh).   Results: Results showed that the intensity of the effect of membership in social networks (24.5%) was higher than the intensity of the effect of mental rumination (12.8%). The intensity of the effect could also be seen for all three subscales of the two variables. The results of structural equations to reject or confirm the hypotheses had shown that both variables of membership in social networks (P = 0.001 and β = 0.526) and rumination (P = 0.002 and (β = -0.379) on flexibility Cognitive have had a significant effect that giving the value of the path coefficient could be said that membership in social networks has a positive effect and mental rumination has a negative effect.      Conclusion: Membership in social networks has had far greater and more destructive effects than mental rumination on students' cognitive flexibility, and it could be said that both the variables of membership in social networks and mental rumination have affected cognitive flexibility.