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MIMIC model and multigroup analysis |
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Message/Author |
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Huiping Xu posted on Friday, December 09, 2011 - 9:26 am
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I am trying to examine measurement invariance between two groups. My group variable is 0 or 1. I tried fitting the MIMIC model using the multigroup analysis by imposing appropriate constraints. Here is my MIMIC model: model: f by y1-y5; y1 with y2; f on group; y3 on group; y1 on group@0; y2 on group@0; y4 on group@0; y5 on group@0; To replicate this using multigroup analysis, I have model: f by y1-y5; y1 with y2 (1); y1-y5 (2-6); f (7); model 1: [y3]; I got exactly the same parameter estimates and standard errors. But when comparing the model fit, these two models give very different chi-square (df), and fit indices are different too. The MIMIC model shows very good fit according to chi-square, RMSEA, and SRMR. But the multigroup model returns a very big SRMR that indicates a poor fit. Aren't these two models supposed to give the same results? Thanks a lot for your help. |
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Please send the two outputs to support. |
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