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Comparative Study
. 2011 Mar;14(3):141-9.
doi: 10.1089/cyber.2010.0151. Epub 2010 Nov 10.

A psychometric comparison of the Internet Addiction Test, the Internet-Related Problem Scale, and self-diagnosis

Laura Widyanto  1 , Mark D Griffiths, Vivienne Brunsden
Affiliations
Comparative Study

A psychometric comparison of the Internet Addiction Test, the Internet-Related Problem Scale, and self-diagnosis

Laura Widyanto et al. Cyberpsychol Behav Soc Netw. 2011 Mar.

Abstract

One of the more prominent issues in the field of Internet addiction is the validity of the instrument used to assess users' level of Internet involvement. Many of the instruments used to assess Internet addiction have high face validity but have yet to be tested psychometrically. The aim of this study is to compare two of the most used Internet addiction research measures, the Internet Addiction Test (IAT) and the Internet-Related Problem Scale (IRPS), along with a self-diagnostic question simply asking Internet users if they thought they were addicted to the Internet. A total of 225 Internet users participated in the study (69 males and 156 females). Participants who defined themselves as Internet addicts had higher scores on both the IAT and IRPS, and the three different Internet addiction measures were strongly correlated to each other. For the IAT, factor analysis generated three factors (emotional/psychological conflict; time management issues; mood modification) explaining 56.3% of the variance. For the IRPS, factor analysis generated four factors (negative effects of Internet use; mood modification; loss of control; increased Internet use) explaining 60.2% of the variance. The implications for these findings are discussed.

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