To measure model fit, we relied on four fit indices: the Comparative Fix Index (CFI), the Nonnormed Fit Index (NNFI), the root mean square error of approximation (RMSEA), and the standardized root mean square residual (SRMR). Rules of thumb are that CFI and NNFI values of .90 represent good fit and .95 or greater represent excellent fit [38, 39]. RMSEA values of .06 are thought to indicate a close fit, .08 a fair fit, and .10 a marginal fit [38, 40], and SRMR values of approximately .09 tend to indicate good fit [38]. We examined overall fit across the four indices.
