Online communication and positive psychological capital of college students in China: the mediating role of online social support

Online communication is one of the most significant factors that affect the growth and development of contemporary college students. The purpose of this study was to examine the mechanisms of online social support in the relationship between online communication and the positive psychological capital of college students in China. Drawing on social exchange theory, the research employed a sample of 1,212 Chinese college students and incorporated online social support as a mediating variable. The investigation constructed a research model using the College Students’ Online Communication Questionnaire, Online Social Support Questionnaire, and Positive Psychological Capital Questionnaire to examine the intricate relationship among online communication, online social support, and positive psychological capital. The study found that both online self-expression and online extended relationship actions positively influenced students’ positive psychological capital. However, online social participation did not demonstrate an impact on this measure. Furthermore, online social support was found to partially mediate the connection between online self-expression and positive psychological capital as well as between online extended relationships and positive psychological capital. Online social support fully mediated the relationship between online social participation and positive psychological capital. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s40359-023-01324-x.