In response to a previous article, the paper discusses the distinction between basic and applied research, two contributions of applied research to theory concerning learning disabilities, and issues in metatheory development. (DB)

In response to a previous article, the paper suggests that solutions to current problems in learning disabilities are not directly dependent upon, and may not be affected by, basic research. The necessity of a coordinated theoretical foundation for research and the wisdom and feasibility of a movement to basic research are discussed. (DB)

In response to a previous article, the paper characterizes learning disabilities as the consequence of a transaction between students exhibiting certain individual differences and the social system of the schools. Basic and applied research can be related in good instructional research which includes the context of disability. (DB)

In response to a previous article, the paper notes additional reasons for the deficit in basic research and theory in learning disabilities, stresses the need for more good systematic research using multiple methods, and suggests that a metatheory for learning disabilities is not yet possible or profitable. (DB)

In response to a previous article, the paper stresses that, in addition to theory development, the field of learning disabilities needs to resolve definitional issues involving disability specificity, intelligence, measurement concepts, and the continua of abilities. Suggestions for developing operational definitions of both learning disabilities…

In response to a previous article, the paper argues that effective instruction of the learning disabled is most likely to develop from systematic theoretically based research though instructional studies can contribute to theory development. Research in many other areas is necessary to develop the powerful teaching methods required. (DB)

In response to a previous article, the paper finds weaknesses in the mechanistic worldview represented by the emphasis on information processing research in constructing a metatheory for learning disabilities. An alternative--contextualist--world view is proposed which is holistic, social, and developmental providing insight into processes of…

In response to articles concerning the author's earlier paper, the paper responds to criticisms concerning contextualism, the role of metatheory, distinctions between basic and applied research, cognitive components and specificity, the science of learning disabilities, neurological indices, model validation, and the nature of learning…