High Quality Content by WIKIPEDIA articles! Elizabeth DePoy is a theorist and researcher who is best known for her work in methods of inquiry, legitimacy theory , , , & , and disjunture theory. Co-authored with Stephen Gilson, DePoy developed Explanatory Legitimacy Theory. Through that lens, DePoy analyzes how population group membership is assigned, is based on political purpose, and is met with formal responses that serve both intentionally and unintentionally to perpetuate segregation, economic status quo, and inter-group tension. Co-authored with Gilson, Disjuncture Theory explains disability as an interactive “ill-fit” between bodies (broadly defined) and environments (broadly defined).