Fear of missing out(Fo MO) refers to the pervasive apprehension resulting from worries that others might be experiencing fantastic stories or positive events from which one is absent. Fo MO is determined by various factors such as personality traits, psychological needs, social media usage and age. Fo MO would exert great impacts on social media usage and psychosocial adaptation. Meanwhile, Fo MO can act as a mediator through which some factors influence social media usage and psychological adaption. The key issues of future studies on Fo MO ...