The effects of social belonging and kindness on stress and well-being during the COVID-19 pandemic: A longitudinal experiment

Because the ongoing COVID-19 pandemic has introduced significant stressors to people's lives, more research on self-directed strategies to cope with pandemic-related stress is needed. In the current longitudinal experiment (N = 614), we investigated the emotional benefits of two self-directed strategies—belonging affirmation and recalling kindness—during the Delta (October 2021) and Omicron (February 2022) waves of the pandemic. Participants were randomly assigned to one of three activity conditions (belonging affirmation, recalling kindness, or control), which they performed weekly for 4 weeks. Contrary to our pre-registered hypothesis, belonging affirmation and recalling kindness did not promote greater well-being overall; however, belonging affirmation led to well-being improvements indirectly via increases in positive emotions. Furthermore, the benefits of belonging affirmation were moderated by pandemic wave. That is, during the Omicron wave, but not the Delta wave, belonging affirmation led to improved life satisfaction, positive emotions, and connectedness, decreased loneliness and negative emotions, and marginally reduced perceived stress and anxiety. These results provide preliminary evidence for the well-being benefits of belonging affirmation and suggest the importance of evaluating coping strategies throughout different stages of a long-term stressor.