ABSTRACT
This Covid-19 pandemic brings uncertainty and may lead to mental problems. Yet, in this context, no study has examined the relationship between intolerance of uncertainty (IU) and either anxiety or depression during pandemic among Indonesians. This study investigated the pathway between IU, anxiety and depression serially mediated by cognitive appraisals (perceived severity, controllability, and knowledge) and emotional and behavioural responses to COVID-19. Online psychological measures were administered to 406 participants, including the IUS-12, the DASS-21, cognitive appraisal scales, and emotional and behavioural response scale. An indirect pathway was found between IU and depression, and the effect was serially mediated by perceived of severity and emotional and behavioural responses to COVID-19. Perceived knowledge and perceived controllability of COVID-19 did not significantly contribute to the model. A similar pathway was found for IU predicting anxiety. As conclusion, IU represents a risk factor for heightened emotional and behavioural difficulties that eventually, could lead to either anxiety or depression during COVID-19.