This article argues for the adoption of a 2-step procedure in diagnosing dyslexia: first, identify students with word list reading standard scores below 90, and then identify students with a reading score at least 10 points lower than expected from the full scale intelligence quotient. (JDD)

Use of the discrepancy approach in defining learning disabilities is challenged, as intelligence tests do not measure potential, are not independent from what is measured by achievement tests, and are not powerful predictors of low reading performance. Use of intelligence tests in analysis, identification, and definition of learning disabilities…

Maintains that even a cursory reading of "The Bell Curve" reveals a skewed methodology that deliberately ignores relevant data. Includes statistical tables illustrating the relationship between environmental factors and test scores. Contends that the basic purpose of "The Bell Curve" is to justify economic racism. (MJP)

In commenting on Linda Siegel's argument (in EC221505) that Intelligence Quotient is not causally related to reading difficulties, this paper argues that Intelligence Quotient is relevant to the definition of reading disabilities but that present knowledge may not justify its use in the selection of children for special services. (JDD)

The effects of compensatory education programs in the United States during the past 20 years are discussed. The author believes the programs have had the least impact on scholastic achievement and intelligence quotient (IQ). The theoretical view of human intelligence and prevailing views of psychologists and educators of the 1960's regarding the…

In this commentary on Linda Siegel's paper (EC221505), it is argued that a minimum level of general ability is needed for successful reading performance. Above this threshold other kinds of intelligence are required and more important is the contribution of verbal efficiency, which is predicated on the covariance of phonology, morphology, and…

Arthur Jensen replies to the critique by Steven Selden. He points out that scientists' choices of subject matter are subjective, but heritability of intelligence is no longer argued among experts. (MD)

In this rebuttal to Walker and Emory's commentary (also in this issue), Horn argues that the issue of the influence of environment on the average IQ of adopted children was well discussed in his article (Volume 54 of CHILD DEVELOPMENT). (BE)

Seven techniques for measuring information processing in infants are proposed to aid in the early identification of mental retardation. The techniques are based on conditioning, attentional, and manual exploration paradigms and could be combined into an assessment battery more valid than current infant IQ tests in predicting later disability.…

The increase in the number of Canadian students whose home language is different from the school language has serious implications in the areas of minority student assessment, possible bias of IQ tests, minority student English-language acquisition, and recommendations to parents regarding home language use. Research and educational considerations…

This commentary re-examines Linda Siegel's four basic assumptions (in EC221505) inherent in the Intelligence Quotient-achievement discrepancy commonly used to define learning disability. The commentary also discusses the uses of alternative measures of intelligence and the role of Intelligence Quotient in the identification of learning-disabled…

These concluding comments on the series of articles introduced by Linda Siegel's paper (EC221505) summarize the bases for disputing the utility of intelligence tests. The learning disabilities field's resistance to abandoning use of Intelligence Quotient tests is also acknowledged, and improved assessment measures and further research are called…

This paper reviews the evidence for problems on emotion-recognition tasks by people with mental retardation. It finds a lack of evidence for the specificity of these performance deficits and suggests that previous findings resulted from IQ-related deficits in memory and attention, in imagination, and in dealing with static or ambiguous stimuli.…

This response to a paper by Linda Siegel (EC221505) on the relationship between Intelligence Quotient and learning disabilities addresses the differences between classification and identification, limitations in Siegel's conceptualization of intelligence, and the representation of the language and learning domains subsumed within the learning…