G*Power 3: A flexible statistical power analysis program for the social,behavioral, and biomedical sciences

G*Power (Erdfelder, Faul, & Buchner, 1996) was designed as a general stand-alone power analysis program for statistical tests commonly used in social and behavioral research. G*Power 3 is a major extension of, and improvement over, the previous versions. It runs on widely used computer platforms (i.e., Windows XP, Windows Vista, and Mac OS X 10.4) and covers many different statistical tests of thet, F, and χ₂ test families. In addition, it includes power analyses forz tests and some exact tests. G*Power 3 provides improved effect size calculators and graphic options, supports both distribution-based and design-based input modes, and offers all types of power analyses in which users might be interested. Like its predecessors, G*Power 3 is free.     

Metaphors in behavioral genetics

Behavioral geneticists sometimes use metaphorsto describe the role of genes in humanbehavior. In this paper, five sample texts areanalyzed: a popular book, a textbook, ascientific review article, and two originalscientific articles representing differentapproaches in behavioral genetics. Metaphorsare found in all the different kinds of sampletexts, not only in the popular book and thetextbook. This suggests that metaphors are usednot only for rhetorical or pedagogical purposesbut play a more fundamental role in scientificunderstanding. In the sample texts, themetaphors tend to be antideterministic, i.e.,they do not imply genetic determinism butstress the interaction of multiple genes andmultiple environmental factors. No conclusioncan be drawn, however, as to whetherantideterminism is representative ofpresent-day behavioral geneticists in general.Certain historically important metaphors thatmay imply genetic determinism are qualified,avoided, or explicitly rejected. There aretensions between some of the metaphors, makingthem difficult to combine. All the metaphorsthat are used appear empirically apt, howeversometimes only with certain qualifications.     

Psychology,behavioral sciences,and the challenge to medical education

It is generally agreed that the health care system is in crisis despite reform efforts over the past two decades. Evidence is presented which suggests that medical education has failed successfully to integrate medically relevant behavioral science research findings into medical school curricula or train physicians in the application of behaviorally based treatment technologies. Psychologists in medical education settings have the opportunity to impact medical education and foster psychology's role in health care. If psychology fails to respond to this opportunity, we cannot then complain of the inevitable consequences.An earlier version of this paper was presented at the annual meeting of the American Association of Medical Colleges, Washington, DC, November 1993.     

NSF programs in the behavioral and neural sciences

The National Science Foundation’s new Division of Behavioral and Neural Sciences supports basic research and related activities in psychology, ethology, anthropology, linguistics, and the neurosciences. Research equipment and facilities can be provided either through a grant supporting a research project or through a separate grant. The scientific importance and soundness of the research to be conducted, as evaluated by reviewers from the research community, are the main criteria for support. Preparation of proposals is briefly discussed, and sources of further information are noted.     

Race and IQ: Molecular genetics as deus ex machina

During the last hundred years, the debate over the meaning of race has retained a highly consistent core, despite evolution of the technical details. Non-Europeans, and in particular, Africans, are assigned the role of deviants and outcasts, whose claim on our common humanity remains in doubt. Each time the technical facade of these racialist arguments is destroyed, the latest jargon and half-truths from the margins of science are used to rebuild them around the same core belief in Black inferiority. Because race is in part a genetic concept, the advent of molecular DNA technology has opened an important new chapter in this story. Unfortunately, the article by D. Rowe (2005, this issue, see record 2005-00117-007) begins from mistaken premises and merely restates the racialist view using the terminology of molecular genetics. No technology--even the awe-inspiring tools now available to DNA science--can overcome the handicap of fundamental conceptual errors. Race is not a concept that emerged from within modern genetics; rather, it was imposed by history, and its meaning is inseparable from that cultural origin. By ignoring its cultural meaning the reductionist narrative about race fails--both in the narrow terms of science and as a contribution to the broader social discourse.     

High-performance computer applications in the behavioral sciences

This symposium revisited the 1985 conference on Advanced Computing for Psychology. That meeting examined the application of new supercomputers in the behavioral sciences. The present symposium reviewed high-performance computing as applied to psychological models, human vision, neuralphysiological processes, and statistical analysis. The recent past and the projected future of high-performance computing in the behavioral sciences were evaluated.     

Algorithms for randomness in the behavioral sciences: A tutorial

Simulations and experiments frequently demand the generation of random numbers that have specific distributions. This article describes which distributions should be used for. the most common problems and gives algorithms to generate the numbers. It is also shown that a commonly used permutation algorithm (Nilsson, 1978) is deficient.     

Ethical and consultation issues in the behavioral sciences and terrorism

This paper briefly examines ethics as a process and as an element of philosophy with a long historical tradition. The paper then reviews elements of the professional ethics of a terrorist or hostage event, issues involved with consulting with an institution, and ethical issues for the clinician who chooses to become personally involved in a hostage event. Although reference is made particularly to psychiatrists, the principles discussed apply in large part to other mental health professionals as well. The paper concludes with the principles articulated by the American Psychiatric Association's Task Force on the Psychiatric Aspects of Terrorism and Its Victims as guidelines for psychiatric intervention in hostage or terrorist situations.     

Data management and accountability in behavioral and biomedical research.

Regulations recently enacted by the Public Health Service and the National Science Foundation to address misconduct in scientific research were designed primarily to curtail deliberate forms of misconduct, such as fabrication or falsification of findings; however, researchers may also be held accountable for inadvertent deficiencies in data management. This article examines some of the problems in data quality control, documentation, and data retention that can occur when computers are used in scientific research. It focuses on deficiencies that could make it difficult to verify the integrity of research data or to reproduce statistical analyses. Strategies for prevention of data management problems are recommended.     

Training in law and behavioral sciences: Issues from a legal educator's perspective

This article discusses the potential value of law and behavioral science training for the ‘typical’ law student and examines the extent to which courses in Law and Social Science and Mental Health Law live up to their training potential.