Journal of

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The present study was conducted to evaluate the model which investigate predictive role of emotional dysregulation (ED), intolerance of uncertainty (IU), experiential avoidance (EA) and repetitive negative thinking (RNT) in positive and negative perfectionism. Participants were 412 B.S students of Tehran university, Allameh Tabatabei and Kharazmi university.The positive and negative perfectionism, repetitive negative thinking questionnaire, disorder in emotion regulation scale, intolerance of uncertainty scale and multidimensional experiential avoidance questionnaire were used for gathering data. Data was analyzed by structural equations modeling. ED does not have significant relationship with positive perfectionism. But there is mediated and unmediated significant relationship between ED and negative perfectionism. IU has unmediated significant relationship with perfectionism and has mediated and unmediated significant relationship with negative perfectionism. EA has unmediated significant relationship with perfectionism and has mediated and unmediated significant relationship with negative perfectionism. ED, IU and EA were significantly predicted 12 percent of positive perfectionisms, 64 percent of negative perfectionisms and 58 percent of RNT. The results showed that positive and negative perfectionism are two different structural models. And RNT mediates the association just between negative perfectionism and some of outcome variables.
 

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 Intolerance of uncertainty is a kind of cognitive bias that affects how an individual receives, interprets and reacts to an uncertain situation in the emotional, cognitive and behavioral levels. The purpose of present study was to determine the various factors that influenced the intolerance of uncertainty by using the meta-analysis method and integrating the results of previous research. By using Articles in scientific journals, all the preceding studies conducted across the country during the years 2010-2017 collected and investigated. Eventually 12 eligible studies in the field of intolerance of uncertainty with acceptable methodology including sampling methods and proper statistical validity and reliability and appropriate questionnaires selected. The research tool was the meta-analysis checklist. For this purpose, the researches, which were methodologically accepted, were selected and meta-analyzed. Homogeneous assumptions and emission errors investigated. The coefficient of effect size was evaluated using CMA-2 software. results showed that metacognitive beliefs had the highest effect size, and after that, the highest effects size were related to stress, inability to take action, and negative repeated thoughts, although the effect size of behavioral inhibition and behavioral activation was not statistically significant. Therefore, attention to these variables can help to formulate and improve the therapeutic interventions related to intolerance of uncertainty.

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The corona disease epidemic have had different effects on the social and psychological aspects of individuals. Studies show that with spread of disease, the fear of this is also increasing. The aim of this study was to investigate the relationship between intolerance of uncertainty and health anxiety with corona phobia in Tehran society. For this purpose, a sample of 430 adult men and women evaluated by health anxiety questionnaire (Salkovskis, 2002), intolerance of uncertainty (Freeston, 1994), and fear of corona (Griffiths & pakpour, 2020) through online recall and via social network.  To analyze the data, Pearson correlation and path analysis were used. The results showed health anxiety and intolerance were positively and directly correlated with fear of corona. Also, intolerance to uncertainty was indirectly correlated with fear of corona through mediating of health anxiety. These results will have practical implications for controlling and reducing fear of corona and corona phobia. It is suggested that according to these personality and cognitive variables, they should be used to design psychological interventions to maintain and promote the mental health of the community in pandemic corona disease.