Scalar invariance Mplus 7.1 PreviousNext
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 emmanuel bofah posted on Monday, June 24, 2013 - 4:00 pm
In Mplus Version 7.1 New Examples on slide 80 http://www.statmodel.com/examples/V7_1examples.shtml the means were constrain to zero in the reference group and freely estimated on the others. Will like to ask if that is the normal way in testing scalar invariance. do you check if the model is acceptable before the means are computed or you can introduce the means as you check the model invariance.
 Bengt O. Muthen posted on Monday, June 24, 2013 - 4:12 pm
Yes, scalar invariance is commonly done this way: fixing factor means in a reference group and holding measurement intercepts equal across groups. There are other, equivalent ways.

Checking if the model is acceptable is done using first configural and then metric invariance.
 emmanuel bofah posted on Monday, June 24, 2013 - 8:54 pm
I have three groupings( ceod, single-sex-boy, single-sex girls). I am doing multigroup analysis. is it possible to do a pairwise analysis by way of varying the reference group and doing three analysis(three scalar models with different reference group per model). Any advice for possible pairwise comparison.
 Linda K. Muthen posted on Tuesday, June 25, 2013 - 4:20 pm
You would need to recode the grouping variable using the DEFINE command.
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