CFA in Type Complex vs Type twolevel PreviousNext
Mplus Discussion > Confirmatory Factor Analysis >
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 Kathrin Klipker posted on Sunday, October 04, 2009 - 4:32 am
I am writing my diploma thesis on nested data (within individuals) and need to do a CFA.

I ran the same model for type= complex and type=twolevel, but there ist an error message (ill conditioned fisher information matrix – change model) when running it with Type= twolevel.

How can that be? Any suggestions (literature recommendations) would be really helpful
Thank you.
 Linda K. Muthen posted on Sunday, October 04, 2009 - 9:20 am
It sounds like you use the same CFA on both between and within in the TWOLEVEL model as you use for COMPLEX. There is no reason to think that because it fits the overall data used by COMPLEX that it would also fit both the within and between data using TWOLEVEL. I would suspect zero variances on between. Please send your full output and license number to support@statmodel.com for further information.
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