“…Parental supervision (Cronbach's α = .70) was measured by 12 items, and students were asked whether their mother and father cared about and strict with six things respectively ranging from 1 (they don't care) to 3 (they are very strict about it): their homework and examination, behaviour at school, the friends they made, dress style, time spent on the Internet, and watching TV. Similar scales were used in previous studies (Ma & Wu, ; Xu, Xu, Simpkins, & Warschauer, ). Parent–child communication (Cronbach's α = .87) was measured by eight items, which was consistent with the instruments used by extant research (Ma & Wu, ; Xu et al, ), and students were asked to report the respective frequencies of their father and mother discussing the following four things with them: things happened at school, relationship with friends, relationship with teachers and worries and troubles on a 3‐point Likert scale (1 = never, 2 = sometimes and 3 = often).…”