An anthropological description of interaction between two boys with profound developmental disabilities, living in a state institution, is offered. The socio-cultural analysis revealed behavior patterns which demonstrated feelings, communication, autonomy in play, and purposeful interaction in the attainment of a goal. (JDD)

People with developmental disabilities sleep less and experience higher incidence of clinical sleep disorders than the general population. Exploring the neurophysiology linking sleep with daytime performance in patients with developmental disabilities is now possible using minimally sufficient sleep and sleep-sensitive behavioral assays. Although…

The principle of motivation has resurfaced as an independent variable in the field of behavior analysis over the past 20 years. The increased interest is the result of the refinements of the concept of the motivating operation and its application to the learning needs of persons with developmental disabilities. Notwithstanding the increased…

This article notes that children with developmental difficulties may exhibit qualitatively different behaviors in addition to or instead of developmental delay. It offers a rationale for neurobehavioral assessment and describes a new instrument, Neurobehavioral Indicators of Atypical Development, that is designed to assist in early screening and…