Pre-pandemic psychological and behavioral predictors of responses to the COVID-19 pandemic in nine countries.

Prior to the COVID-19 pandemic, adolescents (N = 1,330; Mages = 15 and 16; 50% female), mothers, and fathers from nine countries (China, Colombia, Italy, Jordan, Kenya, Philippines, Sweden, Thailand, United States) reported on adolescents' internalizing and externalizing problems, adolescents completed a lab-based task to assess tendency for risk-taking, and adolescents reported on their well-being. During the pandemic, participants (Mage = 20) reported on changes in their internalizing, externalizing, and substance use compared to before the pandemic. Across countries, adolescents' internalizing problems pre-pandemic predicted increased internalizing during the pandemic, and poorer well-being pre-pandemic predicted increased externalizing and substance use during the pandemic. Other relations varied across countries, and some were moderated by confidence in the government's handling of the pandemic, gender, and parents' education.This work was supported by the Eunice Kennedy ShriverNational Institute of Child Health and Human Development (JEL, grant number RO1-HD054805), Fogarty International Center (JEL, grant numberRO3-TW008141), National Institute on Drug Abuse (grant number P30DA023026), the Intramural Research Program of the NIH/NICHD, USA,and an International Research Fellowship at the Institute for Fiscal Studies(IFS), London, UK, funded by the European Research Council (ERC) underthe Horizon 2020 research and innovation program (MHB, grant number695300-HKADeC-ERC-2015-AdG).