Presents an activity to help students understand the precepts of the Hardy-Weinberg principle and simultaneously permit observation of a model of evolution through natural selection in a nonthreatening setting. (PR)

Reviews the behavioral, cognitive, and other psychological features of Prader-Willi Syndrome (PWS), exploring their relationships to known genetic mechanisms. PWS is a genetic developmental disability characterized by a group of specific behavioral features, including an insatiable appetite. The article briefly touches on PWS-related research at…

Knowledge about the inheritance of breast cancer and attitudes about genetic testing for breast-ovarian cancer susceptibility in women at increased risk were studied in Caucasian and African-American women (N=407). Participants had at least one first-degree relative with cancer. Differences in knowledge and attitudes toward risk may be attributed…

Presents a diminutive overview of research and a case study of Beckwith-Wiedemann syndrome (BWS), a rare, genetically complex congenital disorder. Prenatal diagnosis of this case included omphalocele, hydonephrosis, and possible horseshoe kidney, detected by ultrasound. The characteristics of this disability and related problems are discussed.…

Ten myths and countermyths about intelligence are explored. It is argued that the desire for simplicity and publicity has led psychologists and others writing about intelligence to take positions that cannot be justified by current theory or recent data. However defined, intelligence is but one aspect of being human. (SLD)

A year after publication of "The Bell Curve," an informal survey found that the book is being used as college course reading, whether optional or assigned, and that it is being discussed. Its impact on public policy in higher education, particularly in justifying reduced spending for racial minorities, is discussed. (SLD)

Examines four explanations for the low academic achievement of black and poor urban students: socioeconomic, sociopathological, cultural, and genetic. Acknowledges the merits of the first three, noting their specific weaknesses and limitations. Describes key characteristics of teachers who make a difference in reversing the cycle of despair and…

Fifty families participated in mother-infant and father-infant still-face interaction at infant ages 3 and 6 months as part of a study of affect in early parent-infant relationships. Infants' positive and negative affect and parents' positive affect and physical play were coded from videotapes. Consistent with previous research, during the normal…

This article is about the most worrisome and challenging of youth, the angriest and most delinquent, the ones who get into frequent fights, often with weapons, and brag about it. More often boys than girls, they are likely to be gang affiliated and to abuse drugs and alcohol. It helps to learn what is known about how they become kids that people…

The ability to negotiate and resolve socioscientific issues has been posited as integral components of scientific literacy. Although philosophers and science educators have argued that socioscientific issues inherently involve moral and ethical considerations, the ultimate arbiters of morality are individual decision-makers. This study explored…

This research examined 9- to 15-year-old children's understandings about basic genetics concepts and how they integrated those understandings with their broader theories of biology. A cross-sectional case study method was used to explore the students' (n = 90) understandings of basic inheritance and molecular genetics concepts such as gene and…

In this article, the author presents a two-week evolution unit for his biology class. He uses Maria Sybilla Merian (1647-1717) as an example of an Enlightenment mind at work--in this case a woman recognized as one of the great artists and natural scientists of her time. Her representations of butterflies, caterpillars and their pupae, and the…

Visual representations play a critical role in the communication of science concepts for scientists and students alike. However, recent research suggests that novice students experience difficulty extracting relevant information from representations. This study examined students' interpretations of visual representations of DNA replication. Each…

Background: Unusual responses to sensory stimuli are seen in many children with autism. Their presence was highlighted both in early accounts of autism and in more recent first-person descriptions. There is a widespread belief that sensory symptoms characterize autism and differentiate it from other disorders. This paper examines the empirical…

Objective: We investigated the role of genetic and environmental factors in the developmental association among symptoms of eating disorders, depression, and anxiety syndromes in 8-13-year-old and 14-17-year-old twin girls. Methods: Multivariate genetic models were fitted to child-reported longitudinal symptom data gathered from clinical interview…