7Leung L.Leisure boredom,sensation seeking,self-esteem,addiction symptoms and patterns of mobile phone use[M].Mahw ah,Nj:Law rence Erlbaum Associates,2008.
8Kerig PK,Ludlow A,Wenar C.Developmental psychopathology:from infancy through adolescence[M].6th ed.NY:Mc Graw-Hill,2000.