A general framework is outlined for describing the relationship of cognition to brain systems. The model provides for empirical investigations at many levels--computational, chronometric, spatial imaging, and cellular--and argues for the logical interrelationship of these areas of investigation. It is applied to selective visual-spatial attention…

Described is a structured, team-teaching, developmental approach for use with multiply handicapped children between the ages of 3 and 7. The program is explained to be child-centered, to involve individualized work and small group lessons, and to use the unit approach. Task analysis and developmental sequencing of skills are performed for each of…

Presented are Parts 1 and 2 of a teaching guide designed for use in the United States Dependent Schools in the European Area. It provides a developmental, task analysis approach for teaching elementary and secondary level mentally retarded and learning disabled students. Included in Part 1 are steps for use of the guide, an explanation of task…

Objective: Catecholamine stimulant drugs are highly efficacious treatments for attention deficit/hyperactivity disorders (AD/HD). Catecholamine modulation in humans influences performance of numerous cognitive tasks, including tests of attention and working memory (WM). Clear delineation of the effects of methylphenidate upon such cognitive…

The longitudinal interrelations among age, visual and auditory short-term memory, and the concrete operational tasks of class inclusion and combinatorial reasoning were investigated over four testing occasions in a sample of 134 students, initially ranging from 5 to 12 years in age. The Piagetian task battery involved placement of colored…