The relations between COVID-19 stress, social connectedness, and mental health: a longitudinal investigation comparing Chinese and American college students

College students in the U.S. and China have faced significant challenges during COVID-19. Data were collected from 120 Amerian students (M(age) = 19.48, SD(age) = 1.30) and 119 Chinese students (M(age) = 18.61, SD(age) = 0.91) in November, 2019 and March, 2020 to examine risk and protective factors for mental health (depression, anxiety, life satisfaction) during the pandemic, and potential cultural and gender differences. Results indicated that the frequency and impact of COVID-19-related stressful life events predicted deterioration of mental health over time, while social connectedness before the pandemic buffered the negative impact of COVID-19 stressful life events on life satisfaction. Chinese students reported higher levels of social connectedness and larger impact of COVID-19-related stressful life events, but lower frequency of stressful life events than American students. Stressful life events and social connectedness predicted mental health outcomes similarly for Chinese and American students. Gender differences were identified. Females reported more stressful life events, higher levels of depression, anxiety and less life satisfaction during COVID-19 than males. In addition, the frequency of stressful life events had a stronger impact on depression and anxiety for females compared with males. It is important to implement prevention and intervention programs to promote social connections and wellbeing among college students, especially among female students.