title: Psychometric properties of the internet addiction test in Chinese adolescents.
abstract: OBJECTIVE
  This study examined the psychometric properties of the Young's Internet Addiction Test (IAT) in 844 Hong Kong Chinese adolescents (37.7% boys) with mean age of 15.9 (standard deviation = 3.5) years.
  
  
  METHODS
  Demographic items, Internet use habits, IAT, and the Revised Chen Internet Addiction Scale (CIAS-R) were administered. 3 percent of the participants were classified as addicted and 31.6% as occasional problematic Internet users. Confirmatory factor analysis results indicated that the 18-item second-order three-factor model has the best fit with our data (Satorra-Bentler scaled χ(2) = 160.56, df = 132, p < .05, normed fit index = 0.95, non-normed fit index = 0.99, comparative fit index = 0.99, root mean square error of approximation = 0.02).
  
  
  RESULTS
  IAT demonstrated strong internal consistency (Cronbach's α = .93). Satisfactory concurrent and convergent validity of IAT were found moderately correlated with CIAS-R (r = .46) and the average online time per day (r = .40 for weekdays; r = .37 for weekends).
  
  
  CONCLUSIONS
  IAT has evidence of being a valid and reliable scale for screening Internet addiction in Chinese adolescents.
authors.affiliation: Department of Psychology, University of Hong Kong, Pokfulam, Hong Kong.
authors.forename: Ching-Man
authors.initials: CM
authors.lastname: Lai
authors.forename: Kwok-Kei
authors.initials: KK
authors.lastname: Mak
authors.forename: Hiroko
authors.initials: H
authors.lastname: Watanabe
authors.forename: Rebecca P
authors.initials: RP
authors.lastname: Ang
authors.forename: Joyce S
authors.initials: JS
authors.lastname: Pang
authors.forename: Roger C M
authors.initials: RC
authors.lastname: Ho
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000523:psychology*; D016739:Behavior, Addictive / Q000175:diagnosis* / Q000453:epidemiology; D006723:Hong Kong / Q000453:epidemiology; D006801:Humans; D020407:Internet / Q000706:statistics & numerical data*; D011594:Psychometrics / Q000295:instrumentation; D011795:Surveys and Questionnaires / Q000592:standards*; D014936:Word Association Tests / Q000592:standards
keywords: Internet Addiction Test; adolescents; psychometric properties