Abstract

The study aimed to examine how beliefs about the malleability of emotions and rumination act as sequential mediators in the relationship between intolerance of uncertainty and the symptoms of anxiety and depression. The participants included 200 adults (100 males and 100 females) who completed online self-report questionnaires assessing intolerance of uncertainty, emotion malleability beliefs, rumination, anxiety, and depression. The findings revealed that emotion malleability beliefs significantly mediated the relationship between intolerance of uncertainty and both anxiety and depression symptoms. Additionally, rumination also served as a significant mediator in this relationship. Furthermore, both emotion malleability beliefs and rumination sequentially mediated the connection between intolerance of uncertainty and anxiety and depression symptoms. Based on these findings, the study discusses its theoretical and clinical implications, as well as its limitations.