This fact sheet summarizes the interrelations of Down syndrome and Alzheimer disease in a question and answer format. The following questions are addressed: What is Alzheimer disease? Why is a relationship suggested between Down syndrome and Alzheimer disease? Is there a genetic link between Alzheimer disease and Down syndrome? Why is a…

In an attempt to accommodate each of two perspectives (nature versus nurture) in the formulation of a developmental framework, two complementary approaches to developmental theory are presented. First, consideration is given to what is now known about the developmental process in general (thought out in terms of the question "Where is the…

In an attempt to improve the identification of the asymptomatic carrier of classic phenylketonuria (PKU) 59 male and female normal control Ss were differentiated from 18 males and females heterozgous for PKU. (DB)

Reports that as a result of our increasing knowledge of the molecular biology of nitrogen fixation it might eventually be possible to increase the biological production of nitrogenous fertilizer from atmospheric nitrogen. (GS)

Presidential address to the annual meeting of the American Psychopathological Association (New York, February 16, 1968).

This report discusses the magnitude of the problem of birth defects, outlines advances in the birth defects field in the past decade, and identifies those areas where research is needed for the prevention, treatment, and management of birth defects. The problem of birth defects has consumed a greater portion of our health care resources because of…

The purpose of this study is to clarify further the relationships among creative, cognitive, and affective production of students. Thirteen pairs of twins, eight monozygotic (MZ), five dyzygotic (DZ), were administered the Torrance Tests of Creative Thinking, MMPI, and Revised Beta Examination. The F ratio for testing significance of within-set…

The study predicts future requirements for biological scientists by specialty area, future supply within area, and the effects of National Institutes of Health program alternatives on requirements and supply measures. At present and for the forseeable future, approved training grants for critical shortage areas are funded as rapidly as centers of…

Linear regression analyses were used to determine the effectiveness of the Cooperative School and College Ability Test and the Fluency Test in predicting student performance on the achievement tests used in an audio-tutorial elementary genetics program at Syracuse University. Personality factors (Stern's Activity Index scores) were also used. The…

A research workshop was organized to bring together geneticists, psychologists, and other behavioral scientists. The intent was to bring about an interaction of ideas concerned with the genetics of behavior and learning. The emphasis was upon interdisciplinary study among scientists from several fields. Specific issues were isolated in those areas…

Discusses various possible ways by which isolated populations might differentiate into species. The interactions between ecological factors and genes with respect to evolution and the role of genetic polymorphisms and other genetics variation are also discussed. (HM)

This article is designed to inform chemical educators not engaged in this technology as to the nature and methods used in the technology, the reasons for scientific and social concern, and the attempts made to assuage concerns involving recombinant DNA research. (author/BB)