Ongoing Transformation in the Field of Intellectual and Developmental Disabilities: Taking Action for Future Progress.

There has been a significant transformation in the field of intellectual and developmental disabilities (IDD) over the last 5 decades. Although this transformation has profoundly influenced multiple stakeholders, the field is currently at a critical juncture and facing a number of social and political challenges. Given the relevance of the question, "where is the field of IDD and where do we go," the present article describes the field's transformation, and suggests future action steps to facilitate and sustain the transformation. The seven action steps discussed in the article relate to using precise terminology, incorporating a functional and holistic approach to IDD, embracing the supports model and evidence-based practices, implementing outcome evaluation, empowering individuals and families, understanding better the multidimensional properties of context, and incorporating an explicit notion of professional responsibility.