I am estimating a bifactor model, and want to regress two independent variables (iv1 iv2) on the factors in the model. Furthermore, I want to control for covariates (cv1 cv2). Simplified version of my syntax:
f1 BY i1 i2 i3 i4 i5; f2 BY i6 i7 i8 i9 i10; f3 BY i11 i12 i13 i14 i15; bifactor BY i1-i15;
f1 f2 f3 bifactor ON cv1 cv2 iv1 iv2;
I also want to control for relations between my ivs and covariates and among my ivs. However I do not want to control for cv3 in the regression model and also not for the covariance between cv1 and cv2. I also need WITH statements to include my full sample.
Should I add: iv1 iv2 ON cv1 cv2 cv3; iv1 WITH iv2;
Or: iv1 WITH cv1 cv2 cv3; iv2 WITH cv1 cv2 cv3; iv1 WITH iv2; cv1 WITH cv2@0;
Also: would you recommend standardizing ivs and cvs? Also binary variables? Some of my models only work with standardized variables.