In recent decades the impact of personality traits on marital relationships has attracted a lot of attention because the character is the most important and the most fundamental issue in marital dissatisfaction. Given the importance of the character , present research studies the mediating role of defense styles in the relationship between marital satisfaction and level of ego developments. Research has shown that correlation can be predicted. For this purpose 200 people were selected by available sampling of Ss ,from teachers of Savogbolag  township. Data from the defense styles (DSQ), sentence completion test (SCT) and marital satisfaction (ENRICH) questionnaires  were collected and the hypothesized model using path analysis methods were used.Results obtained from the correlation and regression analysis showed that ego development indirectly with the mediatory style defense(impact factor:0/21) had significant  impact on  marital satisfaction. we can Therefore prove that the role of the personality and its components, in defense style and ego development can determine level of marital satisfaction and key factors in developing a prevention program are education and health with emphasis on personality.  

Background: Mental health is a predictor of life expectancy and one of the indicators life's progress. Aims: The present was carried out in order to investigate the mediating role of ego strength between ego development and mental health. Method: current study is an inferential research. To this end, a sample of 112 students who lives in dormitories of Tehran university (55 girls and 57 boys) were selected through multistage cluster sampling. They were asked to complete 3 tests including: Washington University Sentence Completion Test (WuscT, 1981) to measure ego development, Self-Reporting Questionnaire (SRQ20) to measure mental health, the Strength Questionnaire (ESS, Besharat, 2007). Results: The use of path analysis in Amos application investigating the mentioned mediation, demonstrated That ego strength has a statistically significant mediating effect on ego development and mental health. (Affects the intensity and direction of their relationship). Conclusions: Also, there was a positive significant correlation between ego strength and mental health, while, there was no significant correlation between ego development and mental health.  The higher the level of ego development and ego strength of a person is, the higher his/her mental health would be. 

Background: the research background indicates that people in exposing to stress, use determined defense styles according to the rat of ego development. Along with ego development It is expected that the impulsivity as a personality trait will be reduced and the usage of mature defenses will be increased. The relation between impulsivity and fundamental structures like defense styles consider this issue that whether using of defense styles differs regarding to domination of impulsivity axis?. Aims: The aim of this study was to investigate the relationship between the pattern of using defense styles and Prevalence of impulsivity axis. Method: the method of this study was correlation. Data were analyzed by Pearson correlation coefficient and Stebwise regression. The study population consisted of all undergraduate students of Tehran, Allameh Tabataba'i and elm-o-Farhang Universities. A sample of 201 students was selected by a convenient sampling method. The applied research tools for this study were Defense Styles (Andrews, 1993), and Impulsivity (Whiteside & Lynam, 2001) Questionnaires. Results: Data analysis revealed that impulsivity has a significant direct correlation with Neurotic and immature defense styles )p<0/01) there is a significant reverse correlation between this personality treat and mature defense style )P>0/01(. Conclusions: This study introduced impulsivity as a personality variable which explains some of the immature behaviors and defenses. Moreover, it is noted impulsivity characteristic could directly influence the individual’s quality of actions and decisions. 

Background: Classification of psychosomatic symptoms has been one of the constant challenges for researchers in this field and many different categories of these symptoms have been found in different studies. This issue has made the research and treatment of these disorders a challenge, and in order to better recognize and treat these symptoms, the relationship between each group of symptoms and psychological causes should be clarified.
Aims: The present study was conducted with the aim of investigating the relationship between ego development and various psychosomatic symptoms using the method of discovering associative rules.
Methods: Method: This was an exploratory cross-sectional research. For this purpose, 440 participants from the capital city of Tehran were recruited and completely answered the questions. The somatic symptoms checklist and The Washington University sentence completion test were used to collect data. The association rule mining method was used to analyze data.
Results: At high levels of ego development, psychosomatic symptoms are not present, while at medium levels of ego development, all psychosomatic symptoms are present in a significant way. Also, at very low levels of ego development, only gastrointestinal symptoms are present.
Conclusion: These results indicate that gastrointestinal symptoms are developmentally similar to other psychosomatic symptoms, but they have a qualitative difference from other symptoms, which supports the theory of brain-gut axis malfunction in severe psychological disorders. The implication of these findings is that psychological and medical treatments must consider this difference it improves the treatment efficacy.