مجید صفاری نیا

Objective: This study aimed at investigating the effectiveness of mindfulness-based cognitive-behavioral therapy on the perceived stress, disease adaptation, quality of life, and cognitive function of patients undergoing chemotherapy. Method: The design of the study was semi-experimental with a pretest-post test and control group. The statistical population of this study was all patients with sarcoma-lymphatic and gastrointestinal cancer undergoing chemotherapy in Firoozgar-Taleghani-Shariati specialized hospitals in Tehran in the second half of 2021. The study sample consisted of 40 patients with cancer who were selected through convenience sampling and then were randomly assigned to experimental and control groups (20 in each group). The therapy was performed by the researcher for eight 90 minutes –sessions, two sessions per week. Research data were collected using Cohen's Perceived Stress Scale, Watson's disease adaptability, Barclay's cognitive functions, and quality of life questionnaires, and were analyzed by multivariate repeated measures variance analysis. Results: The results showed a significant difference in all variables, and demonstrated that mindfulness-based cognitive therapy significantly improved perceived stress, disease adaptation, quality of life, and cognitive functions of participants in the experimental group in the post-test and follow-up. Conclusion: According to the research findings, it can be concluded that mindfulness-based cognitive therapy is effective in improving the psychological indicators of cancer patients.

.Objective: The purpose of this study was to evaluate the structural model of the relationship between alexithymia, Differentiation of Self, and gender roles in women’s sexual function with the mediation of social exchange styles. Method: This research was a descriptive correlational study. The statistical population of the study included all married women living in Tehran, of whom 550 people participated in the study through an online call. The instruments used in this study to collect data were the Toronto Alexithymia Scale (1994), the Differentiation of Self Inventory (1999), the Bem Sex Role Scale (1981), the Women's Sexual Function Scale (Rosen et al., 2000), and the Leybman et al.’s (2011) Social Exchange Questionnaire. The structural Equation Modeling (SEM) and using LISREL software were applied to evaluate the proposed model. Intermediate relationships in the proposed model were also tested using the bootstrap method. Results: The results of structural equation modeling indicated the model fitness and showed that alexithymia has a negative impact on sexual performance by the mediation of utilitarianism and extreme investment styles. In addition, the masculine gender role directly affects women's sexual function. Conclusion: According to the results, social exchange styles should be considered in improving sexual function. The findings of the present study provide a useful framework for identifying the influential components in the field of social psychology in women's sexual function that should be considered in prevention and treatment programs.

Objective : Health psychology focuses on health promotion and disease prevention. One of the factors that is related to the promotion of mental health is the sense of humor which can be influenced by the components of psychological capital. This study aims to predict the psychological capital dimensions based on the humor styles among the medical students of Tarbiat Modares University. Method : This study is descriptive correlational and the statistical population consisted of all medical students of Tarbiat Modarres University. The participants of the study were 120 who were selected through volunteer sampling. Data were collected by the Luthans Psychological Capital Inventory and Martin’s Humor Style Scale. Data were analyzed through Pearson’s correlation coefficient and multiple regression analysis. Results : Results showed that self-efficacy and hopefulness have a positive significant relationship with adaptive humor styles, but the relationship between self-efficacy and hopefulness with maladaptive humor styles was negative. Also, there was no significant relationship between resilience and all four humor styles. Conclusion : By strengthening adaptive humor styles, it is possible to increase the psychological capital of students to help their mental health.

Purpose: This research was conducted with the aim of presenting a model of self-handicapping based on time perspective and intelligence beliefs mediated by academic self-efficacy in students. Methodology: Present study was cross-sectional from type of correlation. The research population was all secondary high school students of Tehran city in 2019-20 academic years. The sample size was considered 400 people who were selected by multi-stage cluster sampling method. The research tools were the revised self-handicapping scale (Jones & Rhodewalt, 1982), time perspective questionnaire (Zimbardo & Boyd, 1992), intelligence beliefs scale (Abd-El-Fattah & Yates, 2006) and academic self-efficacy scale (Jinks & Morgan, 1999). Data were analyzed by structural equation modeling method in SPSS-25 and Amos-23 software. Findings: The findings showed that the model of self-handicapping based on time perspective and intelligence beliefs mediated by academic self-efficacy in students had a good fit. Also, time perspective and intelligence beliefs had a direct and positive effect on academic self-efficacy and time perspective, intelligence beliefs and academic self-efficacy had a direct and negative effect on self-handicapping. In addition, time perspective and intelligence beliefs with mediated by academic self-efficacy had an indirect and negative effect on self-handicapping (P<0.05). Conclusion: According to the results of this study, planning is necessary to reduce students’ self-disability which for this purpose, school counselors and psychologists can improve their time perspective, intelligence beliefs and academic self-efficacy through workshops