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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 provided for future research directions. (Contains references.) (CR)

Research on special education technology is reviewed, focusing on analytic research, systemic research, and the emergence of constructivism. Federal research projects on technology, sponsored by the Office of Special Education Programs (OSEP), are discussed, and the use of specific methodologies is analyzed. OSEP projects funded under the Technology, Educational Media, and Materials program are listed. (CR)

This article uses a sociocultural perspective of teaching and learning to synthesize previous articles in the series and speculate on future inquiry in the field of learning disabilities. It provides a model showing the expanding sociocultural contexts that frame learning and teaching. (DB)

This article proposes use of a life-span developmental perspective in research on adults with learning disabilities. Considerations for incorporating such essential concepts as mediating variables, context, and age-span phases into research on this population are discussed. (DB)

This article reviews studies evaluating neurocognitive changes following organ transplantation in pediatric end-stage renal and liver disease. Findings suggest possible neurocognitive benefits associated with organ transplantation. Recommendations are made for methodological improvements in future research. (DB)

This overview offers a perspective on the distinguishing characteristics, past and present, of the learning disabilities field in the United States. The discussion focuses on why an advocacy movement has been necessary and emphasizes the need to establish clinical and scientific validation of learning disabilities, to preserve the hard-won achievements of advocacy. (Author/JDD)

This commentary on Edwin Ellis' model of integrative strategy instruction for use with students with learning disabilities argues the need for systematic investigations of the multiple facets of the program. The ISI model is examined in terms of the eight principles of strategy instruction outlined by H.L. Swanson. (JDD)

This literature review on neurocognitive functioning and learning of children with sickle cell disease found diffuse neurocognitive deficits, with much variability across subjects. Studies of psychosocial development of these children indicate that behavioral problems, low self-esteem, and body image disturbances are frequently characteristic. Recommendations for intervention programs and research are offered. (Author/JDD)

This article presents a rationale for a research focus on adults with learning disabilities; reviews what is currently known about adults with learning disabilities in various settings, including the community, postsecondary education, and employment environments; summarizes major longitudinal studies; specifies research priorities for the 1990s; and describes various research methodologies. (Author/JDD)

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 classifications. (Author/DB)

Increasing evidence shows that fetal exposure to alcohol, cocaine, phenylcyclidine hydrochloride (PCP), and other drugs results in infants with abnormal neurologic findings. This suggests the need for longitudinal studies to determine whether such findings will translate into a significant number of children with learning and behavioral problems. (DB)

This article presents a reinterpretation of Gerald Coles's 1987 book "The Learning Mystique," viewing it as making a positive contribution to the learning disabilities field in both practical and theoretical ways, by offering the possibility of different treatment options and expanding the intellectual base for researchers. Potential research topics suggested by Coles's work are discussed. (PB)

This article reviews Bakker's developmental neuropsychological model (the Balance Model) of reading development (EC 602 750), notes the need for validating research before employing these procedures in clinical practice, and raises some conceptual problems such as evidence that learning disability subtypes evolve over time. (Author/DB)

The article reviews three studies (EC 600 064-066) evaluating the effectiveness of using Irlen tinted lenses with reading-disabled persons. The studies are individually critiqued, and recommendations are offered concerning the methodology of further research. Stressed is the need to determine whether a specific syndrome of scotopic sensitivity exists. (DB)

Research and research needs on the peer relationships of hyperactive children are reviewed. Among topics studied are negative perceptions by peers and disruptive classroom behavior. Topics which need to be addressed include effects of age, sex, and cognitive deficits on relations. (CL)

The paper reviews the epidemiology of pediatric closed head injury. Incidence rates, etiologic/pathophysiologic correlates, and associated risk factors are discussed. Suggestions offered for future research concern relationships among age, etiology, and pathophysiology in outcome studies and premorbid measures of personality/intellectual functioning. (Author)

The proposed merger of special and regular education is analyzed relative to conditions of mild handicap and the capability of the regular education system to serve all pupils effectively. Conditions necessary for restructuring include support for research and evaluation, the study of programs as well as individuals, and multiple program models. (Author/DB)

In response to H. Lee Swanson's paper, "Toward a Metatheory of Learning Disabilities," this counterpoint addresses the role of basic versus applied research, limitations of the procedure proposed by Swanson for establishing external validity and proving the metatheory, and limitations of metatheoretical research with regard to developing public funding policies. (JDD)

This critique of H. Lee Swanson's "Toward a Metatheory of Learning Disabilities" comments on Swanson's concept of learning disabilities, cognitive science, and information processing theory. A different research and theory-building agenda is proposed, focusing on society's definition of learning disabilities and instructional issues and using curriculum design as an example. (JDD)

This paper affirms H. Lee Swanson's views in "Toward a Metatheroy of Learning Disabilities" and elaborates upon the role of basic research in learning disabilities. An alternative perspective on the nature of applied research is described that views applied research as theoretically driven research aimed at practical matters. (JDD)

In response to H. Lee Swanson's paper, "Toward a Metatheory of Learning Disabilities," this article argues that the field of learning disabilities does not need to be legitimized and that basic research in learning disabilities is not necessarily the prerequisite vehicle by which theoretical progress can be made. (JDD)

Reactions to H. Lee Swanson's paper "Toward a Metatheory of Learning Disabilities" are outlined, and his arguments are applied to reading disabilities, focusing on the importance of the scientific attitude, the misuse of ecological validity, interpretation of Thomas Kuhn's work, modularity and reading disability, and scientific progress toward a validated metatheory. (JDD)

This paper provides a rationale for basic research and metatheory development in the field of learning disabilities, outlines the steps and cognitive parameters involved in validating such a metatheory, and discusses integrating the findings of basic research with instructional manipulations and reasons for the poor integration of theory and practice. (Author/JDD)

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 acquisition and change. (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 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 disabilities. (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 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 discusses the distinction between basic and applied research, two contributions of applied research to theory concerning learning disabilities, and issues in metatheory development. (DB)

A review of research regarding the self-concept, locus of control, temperament, problem behavior, and social status of learning-disabled (LD) adolescents reveals a general lack of information, conflicting results, and methodological pitfalls inherent in the study of LD adolescent personality and behavioral development. (CB)

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)

Since current instructional, environmental, medical, and neuropsychological interventions do not yield predictable benefits for learning disabled children, there is a need for naturalistic research on the prevention and correction of learning disabilities and learner differences. School personnel should focus on program development, evaluation, and parent-school partnerships. (Author/DB)

In response to Coles (EC 220 146), the article examines additional research concerning language-based theories of reading disability and finds problems with Cole's proposed research agenda focusing on systemic economic, social, and cultural conditions in the etiology of learning disabilities. (DB)

Key concepts of the book include the lack of evidence supporting the neurological explanation for "learning disabilities," basic flaws in research based on this theory, and an alternative "interactivity" theory which posits that systemic economic, social, and cultural conditions are the principal influences contributing to learning failure. (DB)

The article addresses the neuroimaging, electrophysiological, and postmortem evidence concerning the neurological basis of dyslexia and concludes that inconsistent findings may be related to limitations of investigative technologies. Correlates of reading ability and disability are discussed in a developmental-neuropsychological context. Neurometabolic aspects of reading especially need further research. (DB)

The author contends that the current evidence for an attentional deficit explanation of learning disability must be evaluated cautiously. (Author/CL)

The secondary level, learning disabilities literature offers limited hard data on learning disabled adolescents' reading behaviors and pedagogical programing that meet these students' reading needs. (Author)

This response to H. Lee Swanson's paper, "Toward a Metatheory of Learning Disabilities," argues that the field's development from social consensus has positive consequences and that the field is a "prenormal' science. A megatheory is suggested, incorporating metatheoretical aspects of the learning-disabled's information processing along with social, educational, and assessment aspects. (JDD)

In rebuttal to H. Lee Swanson's paper, "Toward a Metatheory of Learning Disabilities," this article emphasizes that a bias toward applied research in learning disabilities is appropriate, that explanatory theories may not provide control over the phenomena explained, and that the field's orientation toward social consensus rather than theory should be harnessed. (JDD)

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 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 and cognitive processes are offered. (DB)