en عمومى General پژوهشي Research <span style="font-size:11pt"><span style="line-height:150%"><span style="font-family:Calibri,sans-serif"><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times=""><span style="color:black">This study aimed to investigate the mediating role of attachment styles in the relationship between similarity of couple personality traits and marital adjustment. The &nbsp;research method was correlation through structural equation modeling. The sample consisted of 100 couples referring to counselling and psychology centres in Karaj. They were selected using the available sampling method and&nbsp;answered to the short form of the five-factor personality scale (NEO&ndash;FFI), Spanier Marital Adjustment Questionnaire (RDAS), and Collins and Reed Adult Attachment Style Questionnaire (RAAS). Data analysis and evaluation of the proposed model were done using structural modeling (SEM). The results showed a significant positive relationship between couples&#39; similarity in extroversion and agreeableness personality traits with marital adjustment and a significant negative relationship between couples&#39; similarity neuroticism personality trait and marital adjustment. Also, secure and insecure attachment styles mediate the relationship between similarity of couple personality traits with marital adjustment. According to the final research model, secure and insecure attachment styles play a mediating role in the relationship between the similarity of extroversion, agreeableness and neuroticism personality traits with their marital adjustment. </span></span></span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:150%"><span style="font-family:Calibri,sans-serif"><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times=""><span style="color:black">This study aimed to investigate the mediating role of attachment styles in the relationship between similarity of couple personality traits and marital adjustment. The &nbsp;research method was correlation through structural equation modeling. The sample consisted of 100 couples referring to counselling and psychology centres in Karaj. They were selected using the available sampling method and&nbsp;answered to the short form of the five-factor personality scale (NEO&ndash;FFI), Spanier Marital Adjustment Questionnaire (RDAS), and Collins and Reed Adult Attachment Style Questionnaire (RAAS). Data analysis and evaluation of the proposed model were done using structural modeling (SEM). The results showed a significant positive relationship between couples&#39; similarity in extroversion and agreeableness personality traits with marital adjustment and a significant negative relationship between couples&#39; similarity neuroticism personality trait and marital adjustment. Also, secure and insecure attachment styles mediate the relationship between similarity of couple personality traits with marital adjustment. According to the final research model, secure and insecure attachment styles play a mediating role in the relationship between the similarity of extroversion, agreeableness and neuroticism personality traits with their marital adjustment. </span></span></span></span></span></span></span><br> &nbsp; Couples Personality Similarity, Marital Adjustment, Attachment style Corresponding 173 181 http://intjmi.com/browse.php?a_code=A-10-1-489&slc_lang=en&sid=1 Zahra YazdanPanah 10031947532846005467 10031947532846005467 No Master of Personality Psychology, Department of Psychology, Karaj Branch, Islamic Azad University, Karaj, Iran Nahid Havaasi Somaar 10031947532846005468 10031947532846005468 Yes Assistant Professor, Department of Psychology, Karaj Branch, kharazmi University, Tehran, Iran