If there is a demand for it, I will include the detail on such things as promax rotation and deciding where to draw the line for inclusion of variables in a factor.

Promax rotation is an alternative non-orthogonal (oblique) rotation method which is computationally faster than the direct oblimin method and therefore is sometimes used for very large datasets.

Several oblique rotation procedures are commonly used, such as direct oblimin rotation, direct quartimin rotation, promax rotation, and Harris-Kaiser orthoblique rotation.

Tausch based his results on a factor analysis with promax rotation of 78 variables from 45 countries with complete data, and also calculated performance indices for the 45 countries with complete data and the nine main global religious denominations.