Perfect goodness of fit PreviousNext
Mplus Discussion > Confirmatory Factor Analysis >
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 Isabelle Beaudoin posted on Friday, August 03, 2007 - 9:10 am
Hello,

I run a CFA. My goodness of fit are too perfect. CFI and IFI = 1.00 and
RMSEA = 0.00
What does it mean?
 Linda K. Muthen posted on Friday, August 03, 2007 - 10:22 am
How many degrees of freedom do you have?
 Isabelle Beaudoin posted on Wednesday, August 08, 2007 - 12:59 pm
For a model, I have 22 degrees of freedom. When I change model adding covariances, I have 34 degrees of freedom.

The "perfect goodness of fit" are the results of many CFA on the girl's sample.
 Linda K. Muthen posted on Tuesday, August 14, 2007 - 2:01 pm
I can't really say why this occurs. If you send your input, data, output, and license number to support@statmodel.com, I will take a look at is.
 Ian Zajac posted on Wednesday, August 15, 2007 - 8:05 pm
Linda - I would be very interested in hearing the reasons behind this also because I am having similar problems with a two factor CFA and dichotomous variables.
 Linda K. Muthen posted on Thursday, August 16, 2007 - 6:42 am
Please send your input, data, output, and license number to support@statmodel.com, I will take a look at this.
 William Hula posted on Wednesday, February 24, 2010 - 11:39 am
Iím having a similar issue with perfect goodness of fit (CFI = 1, TLI = 1.002, RMSEA = 0.00) when estimating a 1-factor model for 10 dichotomous items. My sample size is small at 101. Could that be the issue?
 Linda K. Muthen posted on Wednesday, February 24, 2010 - 1:01 pm
Please send your output and license number to support@statmodel.com.
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