Electrophysiology deals with apparatus applied in a stimulus response situation. This technique is partly concerned with physical problems, partly with biological ones. The failure to appreciate differences in these problems leads to assumptions which require critical examination. Assumptions stating the constancy of objective stimuli, the meaning of inter and intra-individual variation, and the stability of the so-called “resting level” are examined.Some experiments are cited which reveal complications by the apperception of the patient and which have a significant influence on electrophysiological (...) data. The evocation of stress reactions by routine laboratory procedures is discussed and a suggestion is made of the way in which the validity of electro-physiological measurements may be improved.Dans la science de l'électro-physiologie on se sert des instruments pour mesurer des processus de réaction d'une objet stimulée.La méthodique dans cette science est dérivée partiellement de la science biologique et partiellement de la science physicale.Une des difficultées est d'apprécier justement des differences dans les problèmes de mesure dans les deux terraines scientifiques, ce que mène à des assumptions douteuses, qui a besoin d'une examination scrupuleuze.Des assumptions concernant la constance de stimulations objectives, la significance des variations inter- et intra-individuelles et la stabilité du niveau, dit „resting level”, sont examinés.Quelques experiments, révelant des complexités dans l'apperception des patients ayant une influence importante sur les données électro-physiologiques, sont cités.L'évocation des réactions de tension, par des procedures routinières en laboratoire sont discutés et une suggestion afin d'améliorer la validité des données de mesure électrophysiologique est donnée.In der Elektrophysiologie ist man beschäftigt mit Instrumentarium, waraus die Zusammenhang zwischen Reiz und Reaktion untersucht wird. In diesen Untersuchungen werden Methoden angewandt, welche teils aus der biologischen, teils aus der physikalischen Wissenschaft stammen. Es kommt vor, dass Unterschiede in Messungsprobleme innerhalb jedem Fachgebiet nicht richtig gewertet werden, was zu Annahmen führt, welche eine kritische Analyse bedürfen.Annahmen was betrifft, die Konstanz von objective Reize, die Bedeutung von inter- und intra-individuellen Variationen und die Konstanz des sogenannten „resting level”, wurden einer Analyse unterzogen.Einige Experimenten sind zitiert, die eine erhebliche Komplexität in der Wahrnehmungsempfindung des Patienten nachweisen und die eine bedeutungsvolle Einfluss haben auf den elektro-physiologischen Angaben. Das Hervorrufen Spannungsreaktionen durch Routine-vorgänge im Laboratorium wurde diskutiert und eine Weise um mit möglicherweise zuverlassigem Erfolg elektro-physiologischen Messungen aus zu führen wurde vorgeschlagen. (shrink)

Social conditions of race and class continue to combine in ways that raise systemic questions about the adequacy and legitimacy of liberal, capitalist democracy in America. More radical alternatives, however, are still generally held to be irrelevant in the American context. The following is an effort to correct this widespread misrepresentation of socialism’s relevance to America generally, and to matters of race in particular. I consider the work of C.L.R. James who, fifty years ago, developed a class-oriented, explicitly Marxist theory (...) in which the aspirations and struggles of African-Americans were given a central place, both analytically and politically. (shrink)

BACKGROUND: Serotonin transporter promoter genotype appears to increase risk for depression in the context of stressful life events. However, the effects of this genotype on measures of stress sensitivity are poorly understood. Therefore, this study examined whether 5-HTTLPR genotype was associated with negative information processing biases in early childhood. METHOD: Thirty-nine unselected seven-year-old children completed a negative mood induction procedure and a Self-Referent Encoding Task designed to measure positive and negative schematic processing. Children were also genotyped for the 5-HTTLPR gene. (...) RESULTS: Children who were homozygous for the short allele of the 5-HTTLPR gene showed greater negative schematic processing following a negative mood prime than those with other genotypes. 5-HTTLPR genotype was not significantly associated with positive schematic processing. LIMITATIONS: The sample size for this study was small. We did not analyze more recently reported variants of the 5-HTTLPR long alleles. CONCLUSIONS: 5-HTTLPR genotype is associated with negative information processing styles following a negative mood prime in a non-clinical sample of young children. Such cognitive styles are thought to be activated in response to stressful life events, leading to depressive symptoms; thus, cognitive styles may index the "stress-sensitivity" conferred by this genotype. (shrink)

Two types of variables impact face recognition: estimator variables that cannot be controlled and system variables that are under direct control by the criminal justice system. This article addresses some of the reasons that eyewitnesses are prone to making errors, particularly false identifications. It provides a discussion of the differences between typical facial memory and eyewitness studies and shows that the two areas generally find similar results. It reviews estimator variable effects and focuses on system variables. Traditional facial recognition researchers (...) rarely study system variables but reveal important factors that police and policy makers should consider with regard to eyewitness identification and the courts. It concludes that there is still room for considerable improvement in identification procedures and wants to encourage more system variable research as a means of reducing wrongful convictions. (shrink)

OBJECTIVES: Early-emerging, temperamental differences in fear-related traits may be a heritable vulnerability factor for anxiety disorders. Previous research indicates that the serotonin transporter promoter region polymorphism is a candidate gene for such traits. METHODS: Associations between 5-HTTLPR genotype and indices of fearful child temperament, derived from maternal report and standardized laboratory observations, were examined in a community sample of 95 preschool-aged children. RESULTS: Children with one or more long alleles of the 5-HTTLPR gene were rated as significantly more nervous during (...) standardized laboratory tasks than children who were homozygous for the short alleles. Children homozygous for the short alleles were also rated as significantly shyer, by maternal report, than those with at least one copy of the long allele of the 5-HTTLPR gene. CONCLUSIONS: This study extends the literature linking the short alleles of the serotonin transporter promoter region polymorphism to fear and anxiety-related traits in early childhood and adulthood, and is one of very few studies to examine the molecular genetics of preschoolers' temperament using multiple measures of traits in a normative sample. (shrink)

Coastal ecosystems are increasingly dominated by humans. Consequently, the human dimensions of sustainability science have become an integral part of emerging coastal governance and management practices. But if we are to avoid the harsh lessons of land management, coastal decision makers must recognize that humans are one of the more coastally dependent species in the biosphere. Management responses must therefore confront both the temporal urgency and the very real compromises and sacrifices that will be necessary to achieve a sustainable coastal (...) ecosystem, one that is economically feasible, socially just, and ecologically sound. (shrink)

Research Ethics Committees (RECs) are frequently a focus of complaints from researchers, but evidence about the operation and decisions of RECs tends to be anecdotal. We conducted a systematic study to identify and compare the ethical issues raised in 54 letters to researchers about the same 18 applications submitted to three RECs over one year. The most common type of ethical trouble identified in REC letters related to informed consent, followed by scientific design and conduct, care and protection of research (...) participants, confidentiality, recruitment and documentation. Community considerations were least frequently raised. There was evidence of variability in the ethical troubles identified and the remedies recommended. This analysis suggests that some principles may be more institutionalized than others, and offers some evidence of inconsistency between RECs. Inconsistency is often treated as evidence of incompetence and caprice, but a more sophisticated understanding of the role of RECs and their functioning is required. (shrink)