Biglan's dimensions: Are the perceptions empirically based?

The clusters of disciplines originally developed by Biglan have been useful guides in classifying or categorizing academic departments. Questions remain, however, as to the validity of the Biglan clusters among a wide range of colleges and universities.This study provides evidence which supports the validity of the Biglan categories by showing how faculty salaries and instructional staffing patterns differ among departments along the dimensions described by Biglan.