The failure of common methods of research synthesis to arrive at conclusions about effectiveness of special education is discussed. Meta-analysis, the analysis of analyses, is proposed as an alternative. Results of meta-analyses in the areas of special versus regular class placement, process training, and medically-based intervention are…

This book provides an internationally comparable set of indicators on educational provision for students with disabilities, learning difficulties and disadvantages (DDD). It highlights the number of students involved, where they are educated--special schools, special classes or regular classes--and in what phases of education--pre-primary,…

The peer interactions and cognitive levels of play of mildly developmentally delayed preschool children were compared as they participated in mainstreamed and specialized settings. They engaged in substantially higher rates of peer-related social behaviors and constructive play when mainstreamed. Factors affecting early childhood mainstreaming…

This paper is concerned with one aspect of intellectual functioning, logico-mathematical concepts, and with development of representational space in opportunity class children (those characterized mainly by cultural deprivation, intellectual retardation at the Educable Mentally Retarded-borderline levels, and specific learning disabilities) who…

This study examined whether teacher-implemented classroom measurement procedures of short duration are as reliable as methods used in research studies to determine behavior state (e.g., awake active, awake inactive, asleep, drowsed) of six students with profound mental disabilities. Results indicated that more frequent but briefer measurements…

The problem of variability of data, even in presumable homogeneous subgroupings of handicapped children, which contaminates the results of many special education curriculum evaluation studies is examined with a study of 103 second-grade learning disabled students. The distortion of statistics calculated on samples of extreme variability; coupled…

Three issues are addressed in this research review. First, do gifted and average children differ in their self-concepts? Second, what, if any, are the effects on self-concept of labeling a child as gifted or exceptional? Third, does placing the child in a separate enriched or accelerated classroom have any impact on self-concept? The paper begins…