Figure 2.

A latent variable interaction model. The triangles denote a unit vector, and the directional arrows originating from the triangles represent mean structure parameters (e.g., structural regression intercept, latent mean, or measurement intercept). Measurement model residuals are omitted from the diagram because these parameters are constrained to zero. As depicted, the model is not identified because it includes a measurement intercept and a latent mean for each predictor. The models that we describe in this article impose different mean structure constraints.