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April 2012 Volume 15 Number 2 - Educational Technology & Society

April 2012 Volume 15 Number 2 - Educational Technology & Society

April 2012 Volume 15 Number 2 - Educational Technology & Society

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with a score of 39 and below as “average user”, those with a score of 40 to 69 as “possible Internet abuser”, and<br />

those with a score of 70 and above as “Internet abuser”.<br />

Prior psychometric studies of Internet abuse have indicated that the IAT is a valid and reliable instrument (e.g.,<br />

Widyanto & McMurran, 2004). Nevertheless, a confirmatory factor analysis using structural equation modeling on<br />

LISREL 8.80 software program was conducted to verify the single–factor structure of the IAT for the present data<br />

set. This analysis was based on a covariance matrix and maximum likelihood estimation. Since chi–square value is<br />

known to be inflated and significant with large sample size, other goodness–of–fit indices including Comparative Fit<br />

Index (CFI), Normed Fit Index (NFI), Goodness of Fit Index (GFI), Root Mean Square Error of Approximation<br />

(RMSEA) and Root Mean Square Residual (RMR), which are less sensitive to sample size, were used to assess the<br />

fitness of the single–factor model. The results revealed that standardized factor loadings of the items were all<br />

meaningful in size, ranging from .43 to .69. The t–test values for these loadings ranged from <strong>15</strong>.73 to 27.44 and were<br />

statistically significant (p

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