Structural equation modeling (SEM) has been increasingly recognized as a useful quantitative method in testing hypothesized theoretical models that are substantively meaningful in the real world. To evaluate the degree of fit of a SEM model, several measures of fit, so-called fit indices are normally used. A fit index is an overall summary statistic that evaluates how well a particular SEM model explains the sample data. The use of fit indices as measures of model fit became very popular with time, however, none of which has been endorsed as the "best index" by the majority of...