Dear Mplus team, I would like to run a 1-factor model (CFA) with my data (n=177) for the only reason to reject that model - but the model doesn't run. I get the following error: NO CONVERGENCE. NUMBER OF ITERATIONS EXCEEDED
I have collected data on two different time points. Unfortunately, my N is quite low (n=95 per time point). During a SEM course the teacher suggested that I should do multiple group analysis so I can take the two time points in my model and see if my respondents differ in their answers over time. I tried running my CFA model with my data (n=190) using the grouping variable. However, I get the following error: 'No convergence. Number of iterations exceeded'. I have increased the number of iterations to 50,000 and it still won't converge.
I assume that you have different subjects at the two time points so that multiple-group analysis is relevant. As a first step to solve your non-convergence problem you should analyze each group separately. And if that is problematic, switch to EFA.
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