This article presents an examination of the diversity principle in communic
ations policy. Given the Federal Communication Commission's recent emphasis
on diversity as a policy objective, diversity assessments must return to t
he forefront of communications policy analysis. To provide an analytical fr
amework for such research, the diversify principle is broken into three dis
tinct components (source, content, and exposure diversity), and multiple su
bcomponents. In the spirit of the FCC's empirical commitment to the diversi
ty principle, this analysis focuses on diversity as a measurable concept, w
ith potentially interacting dimensions and numerous means of assessment.