From the Editor
General Effects of Aging on Persons with Developmental Disabilities
Cerebral Palsy and Aging
Aging and the Postpoliomyelitis Syndrome
Conceptualizing and Quantifying Functional Change
Aging and Dementia among Adults with Mental Retardation and Down Syndrome
Age-Associated Differences in Cognitive Abilities in Adults with Down Syndrome
Rehabilitation of Adults with Developmental Disabilities
Pre-Existing Conditions and the Aging Spine