ABSTRACT
Aims: to investigate if mental disorders and cognitive performance are associated with interpersonal behaviours and negative emotions among youth during the COVID-19 pandemic. Method(s): This work is part of the Brazilian High-Risk Cohort for Mental Conditions (BHRC), which included 6-12 years-old children at baseline (Year 2010) who participated in an online COVID-19 wave (N = 1.144). Outcomes were factor socres from specifc sections of the international Coronavirus Health and Impact Survey (relationship changes, stress, and concerns related to COVID-19). A structured interview (DAWBA, DSM-IV) assessed externalizing and internalizing disorders. Cognitive predictors were IQ and executive function assessed at baseline. We used Generalized Linear Models adjusting for sex and socioeconomic variables. First, higher IQ (B = 0.0032;t = 2.714;p = .006) and any internalizing disorder prior to the pandemic (B = 0.0902;t = 2.228;p = .026) were associated with higher perceived stress during the pandemic. Second, any externalizing disorder (B = -0.1449;t = -2.066;p = .039) was linked with lower levels of COVID-19-related worries, whilst higher performance in executive function tasks was associated with higher levels (B = 0.1803;t = 4.796;p = .001). Third, higher IQ was linked with negative changes in interpersonal relationships (B = -0.0007;t = -3.371;p = .0007). Conclusion(s): This study showed that lifetime externalizing and internalizing disorders, in addition to cognitive variables at lifetime externalizing and internalizing disorders, in addition to cognitive variables at an early age, were associated with distinct mental health outcomes during the COVID-19 pandemic.