Nowadays, the internet is one of the essential parts of student life, and its addiction is causing many problems. This study aimed to model structural equations of borderline and psychopathic personality traits with internet addiction and mediating distress intolerance. Participants included male and female students of Tabriz University. Two hundred sixty students were selected by cluster sampling and completed the Borderline Personality and Levinson's Psychopathic Traits questionnaire, Young's Internet Addiction Test, and Simon and Gaher's distress tolerance Scale. Finally, 240 questionnaires were analyzed by structural equation modeling. The results showed that borderline and psychopathic personality traits directly affected internet addiction, and distress tolerance was a significant mediator of these relationships. It is suggested to consider the role of distress tolerance in people with borderline and psychopathic traits in the study and intervention of internet addiction.
