Mplus Users Guide v6.. - Muthén & Muthén

CHAPTER 17A list of equality constraints cannot be used with a list of parameters onthe left-hand side of an option. Following is an example of how equalityconstraints are specified for a list of parameters on the left-hand side ofthe ON option:y1-y3 ON x (1 2 3);y4-y6 ON x (1 2 3);where the regression coefficients in the regression of y1 on x and y4 onx are constrained to be equal; the regression coefficients in theregression of y2 on x and y5 on x are constrained to be equal; and theregression coefficients in the regression of y3 on x and y6 on x areconstrained to be equal.Following is an example of how equalities are specified when a list ofparameters appears on both the left- and right-hand sides of an option:y1-y3 ON x1-x2 (1-2 3-4 5-6);y4-y6 ON x1-x2 (1-2 3-4 5-6);Each variable on the left-hand side of the ON option must have a list ofequalities for use with the variables on the right-hand side of the ONoption. Because there are three variables on the left-hand side of the ONstatement and two variables on the right-hand side of the ON statement,three lists of two equalities are needed. A single list cannot be used.Following is what this specifies:y1 ON x1 (1);y1 ON x2 (2);y2 ON x1 (3);y2 ON x2 (4);y3 ON x1 (5);y3 ON x2 (6);y4 ON x1 (1);y4 ON x2 (2);y5 ON x1 (3);y5 ON x2 (4);y6 ON x1 (5);y6 ON x2 (6);594