This article offers a historical overview of the neurological aspects of dyslexia (originally seen as related to aphasia) and a review of familial and genetic factors in developmental dyslexia. Psycholinguistic models of dyslexia as they relate to neurological concepts are presented and the evolution of successful remedial methods is summarized.…

An activity that introduces students to the concepts of independent assortment of alleles during meiosis and gametogenesis, the richness of the variation that occurs as a result of allele recombination, and the unique phenotypes of offspring. Reproducible handouts with the directions and model chromosomes are provided. (KR)

A multivariate hierarchical model of specific cognitive abilities was fitted to data from 196 adopted and 213 nonadopted children from the Colorado Adoption Project and 120 of their siblings to assess genetic influence on specific mental abilities. Genetic effects occur in middle childhood that differentially influence mental ability scores.…

Considers the opportunities and ethical issues involved in genetic testing. Reviews the history of genetics from the first discoveries of Gregor Mendel, through the spurious pseudo-science of eugenics, and up to the discovery of DNA by James Watson and Francis Crick. Explains how genetic tests are done. (MJP)

A set of tri-zygotic quadruplets, three girls and one boy, participated in weekly observations from 1;2 to 1;10 (years;months), a period of transition from prelinguistic gesture to 50 words. In the study, one girl served as a genetic mate to her identical twin and a biological risk mate to her fraternal sister. The biological risk mates achieved…

Data sharing among multiple lab sections increases statistical power of data analyses and informs student-generated hypotheses. We describe how to collect, organize, and manage data to support replicate and rolling inquiry models, with three illustrative examples of activities from a population-level biology course for science majors. (Contains 1…

This report questions the efficacy and utility of the Head Start program by challenging the widely accepted belief that early intervention can prevent future dependence and delinquency. This belief assumes that: (1) sweeping conclusions can be drawn from the study of a few unique preschool programs; (2) children's futures are fundamentally…

Biological Science Grade 7, a one semester course in the Los Angeles Unified School District, provides students with opportunities for a comprehensive study of living organisms using an investigative approach. This course outline is designed to assist teachers in planning and implementing daily and weekly lessons and in meeting course objectives.…

A survey of research and experimentation in the field of stuttering is presented for those engaged in teaching or studying speech therapy, speech pathology, and psychology. The background to stuttering is discussed as are definition, diagnosis, and measurement. The perceptual, organic, perseverative, expectancy, diagnosogenic, and conflict…

This volume includes eight essays. In his "Foreword," Carl Senna examines the revival of the hereditarian position by Arthur Jensen. "Race and Intelligence" contains a critique of Richard C. Lewontin of Jensen's argument, revealing what appear to be deeply embedded assumptions derived from a particular world view. David Z. Robinson, in "If You're…

Cognitive deficits in black and other minority children have been assumed, described, and then explained. In direct and indirect ways, the "evidence," especially in the broad public domain has been mounting to suggest a genetic cause for discovered differences between racial groups on test of aptitude and achievement. It is the purpose of the…

This book includes nine essays. In the Introduction: "The Lingering Infatuation with IQ," the editors argue that since the IQ test has again risen as an instrument of conservative policy, the test and the arguments built around it must be reexamined. Noam Chomsky criticizes the well-known "Atlantic" article, "IQ" (September, 1971), in "The Fallacy…

Two of the groups whose relationship represents one of the most critical social problem areas are also the groups on whom there is a large amount of data. These are American Negroes and American Caucasians, or in today's terminology, blacks and whites. Some data relevant to the design of programs of social action suggest the following: The mean…

"Psychological Assessment in Education and Social Class," a paper presented at the University of Missouri conference on the "Legal and Educational Consequences of the Intelligence Testing Movement: Handicapped and Minority Group Children," is provided. The historical origins of the scheme of norm-referenced testing and the evidence questioning its…

The contents of this book, which presents the fruits of one of a series of conferences organized by the National Research Council Committee on Basic Research in Education, includes 12 papers, with discussion and comments: "Introductory Remarks," Ernst W. Caspari; "Quantitative Aspects of Genetics and Environment in the Determination of Behavior,"…