* what the researcher seeks to learn from the modeling, and
* the instances of missing values and/or the need for imputation.

Structural equation models attempt to mirror the worldly forces operative for causally homogeneous cases - namely cases enmeshed in the same worldly causal structures but whose values on the causes differ and who therefore possess different values on the outcome variables. Causal homogeneity can be facilitated by case selection, or by segregating cases in a multi-group model. A model's specification is not