R help - Feb 2012 - Question about measurment invariance in a multigroup SEM

Hello All,

I have a question about measurement invariance in a multigroup SEM. I am of the
impression that one cannot test the equality of structural paths across groups
without demonstrating measurement invariance of latent factors first. At a
minimum, this would involve demonstrating that corresponding factor loadings do
not differ across groups using, say, a difference in chi-square test.

Am I right about this? 

Is there any published work that argues it is possible to compare the structural
paths without demonstrating measurement invariance first?

Thanks,

Paul