Yu, Tsz ChungTsz ChungYu2021-03-172021-03-1720202020http://hdl.handle.net/20.500.11861/6558"April 2020".Hong Kong Shue Yan University. Dept. of Social Work.Thesis (B.A.) -- Hong Kong Shue Yan University, 2020.Includes bibliographical references (p. 49-53).64 p.engSocial media.Happiness.Self-efficacy.Mental health.College students China Hong Kong.A study of the relationships among the usage of social media, happiness, self-efficacy and mental health of teriary students in Hong KongThesis