This study is aimed at investigating aspects of personality effects and perceived social support on marital instability regarding the mediating role of occupational stress among married female nurses in Shiraz hospitals. Utilizing Cochran’s formula as sample population and random sampling method for selection, among female nurses with at least three years of marriage (۲۲۴۵ nurses), ۲۴۶ nurses was calculated. According to this method, all sample nurses had equal chance to be selected. Data collection was carried out usingfour standard questionnaires of NEO personality inventory (Costa & McCrae, ۱۹۸۶), the multidimensional scale of perceived social support (Zimet et al, ۱۹۸۸), nurse job stress inventory (Gray-Toft & Anderson, ۱۹۸۱) and marital instability questionnaire (Booth et al., ۱۹۸۳). The descriptive analysis was done by SPSS ۱۶ and LISREL structural equations were used to validate the model. The results showed that majority of subjects have a consistent and conscientious character, high social support and moderate occupational stress. They had the lowest marital instability with ۲۲% possibility of divorce. The correlation test results showed that neuroticism has a positive relationship and other aspects of personality have a negative relationship with the marriages instability. The perceived social support has a negative relationship and the occupational stress has a positive relationship with marital instability. Structural equation modeling results showed that the conceptual model had a good fitting. Therefore, the aspects of personality and perceived social support had a direct and indirect impact on marital instability. Finally, the personality aspects were determined as the most important prediction variable of marital instability in nurses.

Suicide is a global problem whose causes have not been fully understood yet. Clearly, suicide is the result of complex interactions of various factors, yet Asian studies have reported social stresses and interpersonal problems as more important contributors. The purpose of the present study is to develop a model to predict suicidal ideations based on perceived social support, thwarted belongingness, and perceived burdensomeness as the variables. The research method is correlational and the statistical population consists of single ۲۰-۳۰year-old girls in Isfahan City chosen by multistage clustering sampling. The sample size included ۲۳۹ participants and the research tools were the multidimensional scale of perceived social support (Zimet, Dahlem, Zimet & Farely, ۱۹۸۸), and the suicidal ideations (Reynolds, ۱۹۸۷-۱۹۸۸ quoted by Beaumont, ۱۹۹۴) questionnaires. Studying the general fitting of the recommended model was performed by AMOS-۲۲ statistical software. The research results indicated that the social support of family predicts suicidal ideations through thwarted belongingness and perceived burdensomeness directly and indirectly, and friends'__AWT_NOKT_COMMA__ support predicts it indirectly through thwarted belongingness. However, the relationship between support of significant others and suicidal ideations was not verified. The results also suggested the relatively different role of family and friends in development of suicidal ideations, but generally increase in the social support of family and friends can inhibit suicidal ideations.