This text provides a comprehensive overview of three theoretical perspectives proposed during the past decade addressing the self-determination construct as it applies to the field of special education. The three models were selected primarily because they have focused on defining and categorizing self-determination for all students with disabilities, including students with mental retardation and other cognitive disabilities. These models are intended to provide students and practitioners a solid grounding in self-determination theory. All models have been evaluated among students with cognitive disabilities but are applicable to all students with or without disabilities. The authors research each model and have applied their own theoretical framework to special education, ensuring that interventions to promote skills like problem solving, goal setting, decision making, and self-advocacy are in place for all students. By reading this text, the reader will gain a solid, theoretically based foundation in understanding the self-determination construct which ultimately supports the development of instructional interventions that enable students with disabilities to become self-determined. It will be useful as a text in upper undergraduate and graduate courses in special education, psychology, social work/welfare, general education, vocational rehabilitation and disability studies.