comparison of multiple CFA models
Hey,
I am trying to compare different CFA models using JASP and am not quite sure how to establish whether the models differ significantly. How can I establish whether one model is better than the other in JASP? Do I have to compare the fit statistics manually? Or is there another option that I just don't see....?
Thank you very much for your help.
Comments
Dear @KiBe,
unfortunately, the CFA analysis is limited to only one model per analysis, so it is not possible to directly compare multiple models to each other (apart from manually compare the fit statistics) within the analysis.
However, you can use the fact that CFA is a specific type of a SEM model. If you run your CFAs using the SEM analysis, you will be able to compare multiple models to each other because the SEM analysis allows that.
If you are not sure how to use the lavaan syntax (required by the SEM analysis) to specify your CFA models, there is a workaround: Specify your CFA model in the CFA analysis, select the button "Show lavaan syntax" under the "Additional output" section, which prints out the lavaan syntax in the results. You can copy that syntax and paste it into the model box in the SEM analysis.
Hope that helps!
Best,
Simon