Introduction to the Special Issue on Disability Policy in a Time of Change.

The enormous effects of public policy-both for good and for ill-in the lives of people with intellectual disability and related developmental disabilities demand the development of stronger tools for policy analysis, and more effective strategies for policy implementation and evaluation. The purpose of this special issue is to help readers understand the complexities of disability policy and the factors that influence its successful development, implementation, and evaluation; and to encourage readers to expand their thinking and actions regarding the role they play in disability policy in a time of change.