Creating CFA syntax from theory

While it's easy to create CFA syntax from EFA results, it's a bit trickier to get the syntax set up when you're working directly from a theory. One way to create syntax that can be used with the sem() function is to create a series of equations showing which item-factor loadings should be estimated. When creating this matrix, the factor names come first, and a colon separates them from a comma-separated list of items. Once you've set up the initial equations, you can use the cfa() function to have the sem package add variances and covariances to the model.