Syntax for second-order and bifactor CFA PreviousNext
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 Michelle Martel posted on Wednesday, November 23, 2011 - 5:14 pm
Hi,

I was hoping you could let me know if the following syntax look correct.

Second-order factor model:

MODEL:
inatt BY inat1pc inat2pc inat3pc inat4pc inat5pc inat6pc
inat7pc inat8pc inat9pc;

hyper BY hyper1pc hyper2pc hyper3pc hyper4pc hyper5pc
hyper6pc hyper7pc hyper8pc hyper9pc;

ADHD BY inatt hyper;

ADHD@1;
inatt@1;
hyper@1;



Bifactor model:

MODEL:
inatt BY inat1pc inat2pc inat3pc inat4pc inat5pc inat6pc
inat7pc inat8pc inat9pc;

hyper BY hyper1pc hyper2pc hyper3pc hyper4pc hyper5pc
hyper6pc hyper7pc hyper8pc hyper9pc;

ADHD BY inat1pc inat2pc
inat3pc inat4pc inat5pc inat6pc inat7pc inat8pc inat9pc
hyper1pc hyper2pc hyper3pc hyper4pc hyper5pc
hyper6pc hyper7pc hyper8pc hyper9pc;

ADHD@1;
inatt@1;
hyper@1;
inatt WITH hyper@0;

Thanks so much!
 Linda K. Muthen posted on Wednesday, November 23, 2011 - 5:53 pm
A second-order factor model with two first-order factors is not identified. When you fix the metric by setting the factor variance to one, you must free the first factor loading which is set to one as the default.

See Slide 159 of the Topic 1 course handout for an example of a bi-factor input.
 Katerina Gk posted on Wednesday, October 30, 2013 - 10:46 am
Hi,

Is it possible to test if there is any impact only to the general factor and not to the rest factors of the bi-factor model?

If yes can I include to the input the general factor only?

Thanks in advance!!
 Bengt O. Muthen posted on Wednesday, October 30, 2013 - 8:31 pm
Maybe you are asking if the general factor can be predicted by or can be a predictor of other variables - and the specific factors not. If so, yes.
 Katerina Gk posted on Thursday, October 31, 2013 - 3:37 am
Yes this is what I am asking.

Thank you very much for your answer!!!
 Bengt O. Muthen posted on Thursday, October 31, 2013 - 8:59 pm
For application, search for a Gustafsson-Balke article in Multiv Behav Research from the 90's.
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