en عمومى General پژوهشي Research Article <div style="text-align: justify;"><strong>Background</strong>: Various protective mechanisms have been proposed to explain how positive and negative emotions increase marital satisfaction.<br> <strong>Objectives</strong>: This study aimed to determine the relationship between personality traits and marital satisfaction with the mediating role of positive and negative affects.<br> <strong>Materials and Methods</strong>: The research method was descriptive and correlational. In this research, 300 married women living in the eastern part of Tehran City, Iran, were selected by the available sampling method. The study instruments were five factors personality trait, marital satisfaction scale, and positive and negative affective questionnaire. The obtained data were analyzed using the Pearson correlation coefficient and path analysis.<br> <strong>Results</strong>: The results of the test using Imus software showed that the indirect effect of personality traits on marital satisfaction was significant through the positive and negative affect mediators (P<0.05).<br> <strong>Conclusion</strong>: The results of this study support the effectiveness of interventions and training to remove and decrease negative emotions.</div> Personality traits, Marital satisfaction, Positive and negative emotions 73 80 http://ajnpp.umsha.ac.ir/browse.php?a_code=A-10-157-1&slc_lang=en&sid=1 Parvin Mostafazadeh khajeh8794@gmail.com 10031947532846001925 10031947532846001925 Yes Department of Clinical Psychology, Tehran Medical Branch, Islamic Azad University, Tehran, Iran. Seyyed Abdolmajid Bahreinian majid.bahrainian@gmail.com 10031947532846001926 10031947532846001926 No Department of Clinical Psychology, Tehran Medical Branch, Islamic Azad University, Tehran, Iran.