Use only one of the factors from a model PreviousNext
Mplus Discussion > Confirmatory Factor Analysis >
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 sunyforever posted on Friday, November 08, 2013 - 2:56 am
Dear Prof Muthen,

Say if I have 4 indicators, x1, x2, x3, x4, which fit well in a CFA model:

f1 by x1 x2;
f2 by x3 x4;

But I am only interested in one of the two factors, say, f1. I want to use the score of f1 in a regression model as an IV and leave f2 alone. Do you think this is a valid approach to use factor score?
 Linda K. Muthen posted on Friday, November 08, 2013 - 3:03 pm
A factor with two indicators is not identified without borrowing information from other parts of the model. I would think the factor scores for f1 would have very low factor determinacy and would not see using them as good practice.
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