

ChiSquare Difference Testing Using t... 

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Len Burns posted on Tuesday, May 21, 2002  11:21 am



Thankyou for your earlier response to my question. I am currently comparing some output from MPLUS with EQS version 6.0 in regard to testing the difference between nested models with the SatorraBentler Scaled Chi Square. I have discovered a difference in output between the programsthe MLM estimation procedure in MPLUS and the Robust Estimation procedure in EQS. The difference concerns the SatorraBentler Scaled ChiSquare. Below is the relevant output (this is a CFA analysistwo factors, eight items per factor, the purpose being to see if the two factor model is better than the one factor model) MPLUS Model 1 Model 2 (2 factor) ML Estimation 4613.46 1493.975 MLM Estimation 2244.893 740.198 df 104 103 SCF 2.055 2.018 cd = 5.866 TRd= 531.79 EQS Model 1 Model 2 ML Estimation 4611.328 1493.318 Robust Estimation 1924.870 703.471 df 104 103 SCF 2.396 2.123 cd = 30.52 TRd = 102 All the other output is the same across the two programs except for the SatorraBentler Scaled ChiSquare. My guess is that the MLM estimation procedure in MPLUS is not exactly the same as the Robust estimation procedure in EQS. However, I am uncertain about this. In addition, the values that I calculate for the TRd make "sense" with the MPLUS output. The values for TRd, however, do not make "sense" for the EQS output. I would greatly appreciate any thoughts you might have on this. Thanks so much. Len Burns 

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