Authors Mackelprang, Salsgiver, and Parrey establish the historical and societal context in which those living with disabilities are marginalized while offering a social ecological model and its three--biosocial, psychosocial, and social--cultural dimensions that students and instructors can employ. Readers will also be introduced to universal diversity theory, which draws from feminist, race, disability, and queer theories for an approach that is applicable across all diverse groups. Written from a North American perspective, the book also addresses disability laws, policies, and practices globally. Learning objectives guide students' reading and discussion questions highlight key ideas while text boxes and personal narratives bring the book to life.