L Tehrani Azad - Department of Psychology, Faculty of Psychology and Social Sciences, Roudehen Branch, Islamic Azad University, Tehran, Iran
M Mojtabaei - Department of Psychology, Faculty of Psychology and Social Sciences, Roudehen Branch, Islamic Azad University, Tehran, Iran

Aim: The purpose of this study was to determine the relationship between marital satisfaction and conflict resolution in couples based on the mediatory role of their psychological capital. Method: The research method was correlation. Statistical population of the study included 167832 students of all branches of Islamic Azad Universities of Tehran Province in 2018. Sample consisted of 135 couples (270 subject) who were selected through clustered random sampling method. In the first stage, two branches of Science and Research , and Central Tehran , and in the second stage faculties of Law, Divinity and Political Sciences and Technology and Engineering in Science and Research branch and Economics and Accounting and Foreign Languages in Central Tehran were randomly selected. Instruments: instruments were Couple Satisfaction Scale by Afrooz, 2008; Psychological Capital Questionnaire by Luthans, Avolio, Avey & Norman (2007) and Conflict Resolution Questionnaire by McClellan, 1997. Data were analyzed after removing 8 incomplete questionnaires and 2 outliers using structuralequation modeling. Results: The results showed that the direct path coefficient between psychological capital and conflict resolution was positive (β= 0.552, P= 0.001), also the total path coefficient that is total of direct and indirect path coefficients between marital satisfaction and conflict resolution (β= 0.423, P= 0.001) was positive and the indirect path coefficient between marital satisfaction and conflict resolution (β= 0.225, P= 0.001) was positive. Conclusion: Family therapists are suggested to training conflict resolution manner and resolving common life problems that probably are the source of repeated conflicts among them to provide marital satisfaction and help them to establish relationships that are full of psychological capital from which both marital satisfaction is influenced and influencing it, and be capable ofresolving positive conflict

conflict resolution, couples, marital satisfaction, psychological capital