Reciprocal relationships between cyberbullying and loneliness among university students: The vital mediator of general trust

• The initial level of cyberbullying (perpetration and victimization) significantly predicted the initial level of loneliness. • The change rate of cyberbullying (perpetration and victimization) positively predicted the change rate of loneliness. • The initial level of cyberbullying victimization was negatively correlated with the growth rate of cyberbullying victimization. • General trust played a bidirectional mediating role between cyberbullying (perpetration and victimization) and loneliness.