TITLE: Unconstrained Approach for SEM-Handbook Chapter
DATA: FILE is qml.dat;
VARIABLE: NAMES are
x1 x2 x3 x4 x5 x6 y1 y2 y3;
USEVARIABLES are
y1 y2 y3 x1 x2 x3 x4 x5 x6
x1x4 x2x5 x3x6;
DEFINE: ! Definition of the product-indicators for the latent product variable
x1x4 = x1 * x4;
x2x5 = x2 * x5;
x3x6 = x3 * x6;
ANALYSIS: MODEL = NOMEANSTRUCTURE;
MODEL:
! Specification of measurement models
eta by y1-y3;
xi1 by x1-x3;
xi2 by x4-x6;
! Measurement model for the latent product variable
xi1xi2 by x1x4 x2x5 x3x6;
!Structural models
eta on xi1 xi2 xi1xi2;