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.
If this doesn't help, you need to send your output, input, data, and license number to firstname.lastname@example.org.