Objective:To explore the effects of mobile phone addiction,friendship quality and preference for solitude on depression and anxiety in college students.Methods:A sample of 769 college students was recruited in this study to complete the questionnaires about mobile phone addiction,friendship quality,preference for solitude,depression and anxi- ety.Results:①Mobile phone addiction was positively correlated with depression and anxiety,and negatively correlated with friendship quality;Friendship quality was negatively correlated with depression and...