Asymmetric cultural effects on perceptual expertise underlie an own-race bias for voices

The own-race bias in memory for faces has been a rich source of empirical work on the mechanisms of person perception. This effect is thought to arise because the face-perception system differentially encodes the relevant structural dimensions of features and their configuration based on experiences with different groups of faces. However, the effects of sociocultural experiences on person perception abilities in other identity-conveying modalities like audition have not been explored. Investigating an own-race bias in the auditory domain provides a unique opportunity for studying whether person identification is a modality-independent construct and how it is sensitive to asymmetric cultural experiences. Here we show that an own-race bias in talker identification arises from asymmetric experience with different spoken dialects. When listeners categorized voices by race (White or Black), a subset of the Black voices were categorized as sounding White, while the opposite case was unattested. Acoustic analyses indicated listeners’ perceptions about race were consistent with differences in specific phonetic and phonological features. In a subsequent person-identification experiment, the Black voices initially categorized as sounding White elicited an own-race bias from White listeners, but not from Black listeners. These effects are inconsistent with person-perception models that strictly analogize faces and voices based on recognition from only structural features. Our results demonstrate that asymmetric exposure to spoken dialect, independent from talkers’ physical characteristics, affects auditory perceptual expertise for talker identification. Person perception thus additionally relies on socioculturally-acquired dynamic information, which may be represented by different mechanisms in different sensory modalities.     

Cocaine addiction and personality: A mathematical model

The existence of a close relation between personality and drug consumption is recognized, but the corresponding causal connection is not well known. Neither is it well known whether personality exercises an influence predominantly at the beginning and development of addiction, nor whether drug consumption produces changes in personality. This paper presents a dynamic mathematical model of personality and addiction based on the unique personality trait theory (UPTT) and the general modelling methodology. This model attempts to integrate personality, the acute effect of drugs, and addiction. The UPTT states the existence of a unique trait of personality called extraversion, understood as a dimension that ranges from impulsive behaviour and sensation‐seeking (extravert pole) to fearful and anxious behaviour (introvert pole). As a consequence of drug consumption, the model provides the main patterns of extraversion dynamics through a system of five coupled differential equations. It combines genetic extraversion, as a steady state, and dynamic extraversion in a unique variable measured on the hedonic scale. The dynamics of this variable describes the effects of stimulant drugs on a short‐term time scale (typical of the acute effect); while its mean time value describes the effects of stimulant drugs on a long‐term time scale (typical of the addiction effect). This understanding may help to develop programmes of prevention and intervention in drug misuse.     

The UK Hybrid Embryo Controversy: Delegitimising Counterpublics

The UK Human Fertilisation and Embryology Act of 1990 was revised in 2008 in response to legal challenges, societal changes and clinical advances since 1990. A provision permitting the creation of animal–human hybrid embryos was the subject of an extremely effective public relations (PR) campaign by embryo scientists and other supporters of such experimentation. In response, science correspondents of the ‘serious’ or ‘quality’ press commented favourably on these PR activities; this validation supplemented key messages in their press releases. The approval conferred on attempts to shape public opinion was explicitly contrasted with the public consultation exercise conducted by the UK Department of Health in 2005. Press coverage of the campaign demonstrated asymmetrical framings of the representativeness of public opinion and scientists' accounts of their proposed research. Scientists' views were represented as objective and therefore a legitimate basis for policymaking, in contrast with subjective views of putatively uninformed or opposed publics. Such opponents were cast as a counterpublic. The public interest was limited to evaluating the science on its own terms, thus pre-empting consideration of the possibility that public interests and scientists' interests may not coincide.     

Motivation for Physical Activity among Hawaiian,Japanese, and Filipino University Students in Hawaii

The purpose is to identify the motivations and barriers to physical activity (PA) among the three largest ethnic groups in Hawaii (Hawaiians/part-Hawaiians, Japanese, and Filipinos). University of Hawai'i students (N = 32, aged 18+) self-identified as one of those ethnicities participated in focus groups. There are more common themes than ethnic-specific variations in factors influencing PA. PA is understood as exercise among all groups; leisure time PA like running and surfing are common activities. Results were more similar among Hawaiian and Japanese than with Filipino participants. The findings offer an opportunity for improving cross-cultural and culture-specific PA interventions for those ethnicities.     

Perpetuating myths: A response to hardy's 1996 coleman griffith address

Abstract

To take someone's ideas seriously enough to question them is a significant form of respect. It builds communities where controversy stimulates thought instead of enmity; what the clash of ideas leads not to victory for one party but to new questions and news answers for everyone. (Nicholls, 1989, p. i)     

Application of Cognitive Load Theory to Develop a Measure of Team Cognitive Efficiency

Improving human systems integration through technologically advanced training and performance aids has become increasingly important to military transformation. Measures of improved cognitive and coordination processes arising from the employment of transformational tools are necessary to guide the refinement and future development of such technologies. In this article, we describe a cognitive load theory approach to developing a combinatory measure of individual workload and team performance following an experimental intervention involving training and a decision support system. We discuss how indicators of what we term team cognitive efficiency can improve assessing the effectiveness of transformational processes and technologies.     

Understanding the impact of HIV diagnosis amongst gay men in Scotland: An interpretative phenomenological analysis

Objectives: Although a wide literature details the psychological impact of human immunodeficiency virus (HIV) diagnosis, it predates the introduction of effective treatment for HIV (i.e. anti-retroviral therapies, ARTs). This article explores the psychological impact of HIV diagnosis in post-ART accounts. This is important, given the recent policy developments which focus upon increasing HIV testing and thus diagnoses.

Design: This study presents a qualitative exploration of the experiential accounts of HIV-positive gay men living in Scotland. A total of 14 HIV-positive gay men took part in open-ended interviews.

Methods: Interpretative phenomenological analysis was employed to identify recurrent themes across the interviews.

Results: Our analysis focuses upon the participants’ struggles in adjusting to their HIV status. Diagnosis was a deeply shocking and unexpected experience. Stigma and fear of prejudice dominated their accounts. HIV was understood, variously, as a shameful, fatal and life-changing condition. Overall, within these accounts there was little sense of HIV normalisation.

Conclusions: In Scotland, where HIV prevalence is low, and where no accessible HIV-positive sub-culture exists, there is on-going psychological distress and morbidity amongst gay men testing HIV positive. As HIV-related policy increasingly focuses on increasing rates of antibody testing, there is a need to reduce the psychosocial costs associated with HIV-positive diagnoses.     

Brief treatment with alprazolam and behavioral guidance in panic disorder

Abstract

Thirty-two patients with panic disorder, with or without agoraphobic limitations, were treated with alprazolam (mean dose 3.5 mg/d) plus brief behavioral guidance in an open study during eight weeks. The sample had a notorious severity in the frequency of panics and phobic avoidance but was only mildly depressed. Before starting treatment the presence of demoralized mood and extensive avoidance were significant indicators of clinical severity, whereas the presence of dizziness as a relevant somatic complaint was not related to higher severity. After eight weeks of treatment a clinical improvement equal to or exceeding 80% of change was obtained in all cases (29) who completed treatment. Ninety-two percent of the patients were panic free at the end of treatment. There were significant reductions in all the scales with comparable declines in the subgroups formed according to the presence or absence of agoraphobic avoidance and demoralization. The data suggested that moderate doses of alprazolam could be a quick and effective treatment for panic-agoraphobic patients in the short term. The behavioral guidance probably helped in reducing agoraphobic avoidance and in obtaining global good effectiveness although this awaits controlled tests. Finally, the similarity in the response to treatment regardless of the presence of extensive avoidance or demoralized mood argues in favor of not considering the different variants of panic-agoraphobic syndrome differently, at least in samples with similar severity to the present one.