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The components of control challenge and neuroticism factors had a significant role in predicting perceived stress. On the other hand, the components of control and commitment and extraversion factors had a prominent role in predicting depression in patients with OLP, so personality constructs may have an effective role in triggering experience of stress, depression, and OLP itself. Additionally, interventions that enhance individual protective factors may be beneficial in reducing stress and depression in some severe diseases.

This study investigates the relationships among peers' perceived support, life satisfaction, and student engagement in academic activities. Three hundred and fifteen Iranian students (172 boys and 143 girls) who were studying in one suburb of Tehran participated in this study. All participants were asked to complete Peers' Perceived Support scale (PPSS), Student Engagement in Academic Activities scale (SEAAS), and Brief Multi-dimensional Students Life Satisfaction Scale (BMSLSS). Structural equation modeling was used to analyse the data. According to the results, there are significant positive correlations between components of peers' perceived support, student engagement in academic activities, and life satisfaction in pairs. In two examined models, the direct and indirect effects of peers' perceived support on student engagement in academic activities and life satisfaction were significantly positive. In addition, life satisfaction and student engagement in academic activities had a mediating role and bi-directional effect in the surveyed models. In sum, the results of this research endorse not only the importance of peers' perceived support in enhancing student engagement in academic activities and life satisfaction but also the cross-effect of student engagement in academic activities and life satisfaction variables on each other.

Objective: This study aimed at investigating the mediating role of perceived stress in anticipation of anxiety and depression on facing the ultimate concerns (death, loneliness, freedom, and meaningfulness). Method: A total of 389 students from Ferdowsi University of Mashhad participated in this study in 2017-18. The participants were selected using random sampling. The data were collected using the subscales of anxiety and depression in depression, anxiety, stress scale (DASS), Death Anxiety Scale (DAS), the third edition of Loneliness Scale UCLA (UCLA-LS), the subscale of meaning in life in Meaningfulness of Life Questionnaire (MLQ), responsibility scale of California Psychological Inventory (CPI), and the Perceived Stress Scale (PSS). Then, they were evaluated using Pearson correlation and path analysis. Results: The correlation between the symptoms of anxiety and depression, and death anxiety and loneliness was direct and significant with the perceived stress. The relationship between the perceived stress with meaningfulness of life and responsibility was significantly inverse. The analysis of the data path showed that the component dealing with existence (loneliness and death anxiety) predicted 20% of anxiety symptoms through perceived stress in the model that was fitted well with research data. Conclusion: According to the findings, it can be concluded that the relationship between dealing with ultimate concerns and anxiety symptoms was not linear. Dealing with ultimate concerns affects the anxiety symptoms through the perceived stress. Therefore, attention to the perceived stress management to promote health and prevent anxiety disorders is important.

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