Subtypes of social withdrawal and mental health trajectories during COVID-19 pandemic.

• Social withdrawal subtypes (shy, unsociable, & social avoidance) were identified. • The subtypes had distinct mental health trajectories in response to the pandemic. • Social avoidant people had the poorest mental health across the pandemic. • Shy people's mental health did not change with the development of the pandemic. • Unsociable people respond to the pandemic similarly to the non-withdrawn people. The outbreak of Coronavirus Disease 2019 (COVID-19) has pervasive implications for the well-being of people, especially for the social withdrawn individuals. The present study examined changes of well-being among people in distinct subgroups of social withdrawal – shyness, unsociability, and social avoidance –in different phases of the COVID-19 pandemic using six-wave longitudinal data in China (N = 222; 54.50% female). Results showed that, in general, well-being sharply decreased from the initial phase to the peak phase of the pandemic, but steadily recovered after the peak phase. People in different withdrawal groups displayed different levels and trajectories of well-being during a period of six months. The current study has implications for developing targeted interventions for vulnerable people in public health crisis. [ABSTRACT FROM AUTHOR]