For successful classification of children with attention deficit-hyperactivity disorder, major issues include (1) the need for explicit studies of identification criteria; (2) the need for systematic sampling strategies; (3) development of hypothetical classifications; and (4) systematic assessment of reliability and validity of hypothetical…

The field of learning disabilities (LD) needs to focus on four issues concerned with research and practice: (1) differentiation of LD from other problems, (2) identification of LD subgroups, (3) effects of specific interventions with specific subgroups, and (4) recognition of social/cultural influences on LD identification and services. (Author/DB)

This article introduces a special issue dealing with selected aspects of writing disorders. It provides an overview of following articles and issues confronting the written language field, including definitional issues, assessment issues, neurodevelopment components, brain-behavior linkages, lifespan issues, and interventions. Recommendations are…