[R] Factor analysis and cfa with asymptotically distributed data

"Jeanine Grütter" janeg32 at gmx.net
Tue Nov 23 22:57:20 CET 2010

I have friendship data which is strong skewed. So it doesn't make sense to 
use maximum likelihood methods for fa and cfa.
But I couldn't find any function for asymptotically distributed data for doing a factor analysis. Only: apca() but there is no possibility to allow for factor correlations. 

The same problem is with sem() I couldn't get any solutions for my model because of the distribution.
I get the error: 
In sem.default(ram = ram, S = S, N = N, param.names = pars, var.names = vars,  :
  Could not compute QR decomposition of Hessian.
Optimization probably did not converge.

Does someone know how to do fa and cfa with strong skewed data?

Thanks a lot for helping!


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