How do the correlated residuals in SEM affect the reliability estimation?

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Sergio Dominguez Lara

Excellent. Thanks for the answer!

Mark Shevlin

Hi Sergio

I agree that its best to calculate reliability from the CFA estimates if there are correlated residuals. If you have a look at the (very old) paper here (http://www.jeremymiles.co.uk/mestuff/publications/p6.pdf) you'll see that Cronbach's alpha will be overestimated if there are systemic sources of error that have not been modelled.

Best wishes

Mark