how is bifactor anay how is an itrt model different from a factor analysis? how is bifactor itrt different from factor analysis how is the factor model different how is bifactor factor analysis similar to factor analysis how is a bifactor itr model different from a factor analysis? how is bifactor in a factor analysis how is bifactor itrt different from a factor analysis? what is the difference between a factor and bifactor how is bifactor factorization how is bifactor ing model different from factor analysis how is bifactor irt different from factor analysis? how is bifactor irt different from factor analysis? how is a bifactor model different from a factor analysis? how is an irt model different from the factor analysis how is bifactor factor model different than factor analysis how is bifactor factor analysis different in terms of the analysis how is bifactor itr model different from factor analysis how is bifactor itr model different from factor analysis how is a bifactor factor analysis different?