fa نقش هیجان خواهی در روابط فرا زناشویی با میانجی‌گری سرخوردگی زناشویی روان شناسی تکاملی Evolutionary Psychology پژوهشي Original <div style="text-align:justify"><span style="color:#3300ff"><span style="font-size:14px"><span style="font-family:Times New Roman">Extramarital relations are one of the most traumatic problems that cause the disintegration of married life, and understanding the factors preventing extramarital relations is of great value in maintaining the stability and quality of life of families. Consequently, present study aimed to investigate the mediating role of marital frustration in the relationship between sensation seeking and extramarital relationships.<strong> </strong>This<strong> a </strong>quantitative descriptive correlational study that used structural equation modeling. The statistical population included all married men in Tehran in 2022. Participants were 300 qualified people were selected using accessible sampling method. Data was collected via Arnett Inventory of Sensation Seeking (AISS), Niehuis and Bartell Marital Disillusionment Scale, and Whatley&#39;s Attitudes Toward Infidelity Scale. The research model and relationships between variables were analyzed using Pearson&#39;s correlation test using SPSS version 22 software and Amos software.<strong> </strong>The results indicated that sensation seeking (&beta; = 0.505, P < 0.01) has a direct and positive effect on marital frustration, has a direct and positive effect on extramarital relationships (&beta; = 0.453, P < 0.01) and has an effect on extramarital relationships ( &beta;=0.172, P<0.05), indirectly and through the marital frustration. Furthermore, marital frustration has a direct positive effect on extramarital relationships (&beta;=0.342, P<0.01).<strong> </strong>According to the results, the emotional based variables such as sensation seeking and marital frustration can affect the attitude towards extramarital relationships. The findings have beneficial implications for therapeutic and educational interventions in extramarital relationships as well.</span></span></span><br> <span style="font-size:11pt"><span style="font-family:Calibri,"><strong><span style="font-size:14.0pt"><span style="font-family:"Times New Roman","serif""></span></span></strong></span></span></div> Sensation Seeking, Marital Frustration, Extramarital Relationships ​​ 64 75 http://ieepj.hormozgan.ac.ir/browse.php?a_code=A-10-577-1&slc_lang=fa&sid=1 Farzad Asefi Far فرزاد آصفی فر farzadasefi58@gmail.com 10031947532846006673 10031947532846006673 No Ph.D Student of Psychology, Department of Psychology, Saveh Branch, Islamic Azad University, Saveh, Iran دانشجوی دکترای روانشناسی ، گروه روانشناسی، واحد ساوه، دانشگاه آزاد اسلامی، ساوه، ایران Hasan Shams Esfandabad حسن شمس اسفندآباد hshams1333@gmail.com 10031947532846006674 10031947532846006674 Yes Associate proffessor of psychology, Department of psychology, Faculty of Social Sciences, Qazvin, Iran دانشیار گروه روانشناسی، دانشکده علوم اجتماعی، دانشگاه بین المللی امام خمینی، قزوین، ایران Fatemeh Shaterian Mohammadi فاطمه شاطریان محمدی fshaterian@yahoo.com 10031947532846006675 10031947532846006675 No Assistant Professor, Department of Psychology, Saveh Branch, Islamic Azad University, Saveh, Iran استادیار گروه روانشناسی، واحد ساوه، دانشگاه آزاد اسلامی، ساوه، ایران