Effects of Fatigue and Laterality on Fractionated Reaction Time

Surface EMG enabled fractionation of a simple hand grip total reaction time into peripheral and central processing components (motor time and premotor time, respectively). Changes in reaction time components were investigated in 12 female intercollegiate swimmers (bilateral athletes) and 12 female intercollegiate tennis players (unilateral athletes) following a 48% strength decrement induced by serial maximal voluntary isometric contractions (5 sec in duration). Despite significantly greater strength in the dominant arm than in the nondominant arm, there was no difference in fatigue effects between arms. Fatigue increased the premotor component of reaction time significantly, and indirectly the total reaction time, but the motor time remained essentially constant regardless of the type of previous athletic training. This indicated that fatigue impaired central nervous system or myoneural-junction operations rather than the intramuscular ability to initiate force.     

Gender‐bias hate crimes: what constitutes a hate crime from a potential juror's perspective?

The current study explored hate crime in a nontypical scenario. Label of the crime (first‐degree assault vs. bias‐motivated assault) and gender of the victim were varied within the context of an attack perpetrated within other gender dyads (i.e., when the victim was female, the perpetrator was male, and vice versa). Results indicated that participants in the assault condition were more likely to find the defendant guilty than those in the hate crime condition. Participants also made differential attributions of victim blame, such that those in the assault condition found the victim to be more mentally unstable than those in the hate crime condition.     

Status legitimizing beliefs predict positivity toward Whites who claim anti-White bias

Although Whites are increasingly likely to perceive themselves as victims of racial bias, research provides little insight into how anti-White bias claimants are perceived. Two studies examined whether Whites' endorsement of status legitimizing beliefs (SLBs) moderates their reactions toward White discrimination claimants. In Study 1, Whites who rejected SLBs reacted less favorably to an anti-White bias claimant relative to one who made a nondiscriminatory external claim, whereas Whites who endorsed SLBs expressed equally positive attitudes toward an anti-White bias claimant and a non-claimant. In Study 2, Whites who were not primed with status legitimizing beliefs displayed negative reactions toward an anti-White bias claimant compared to a non-claimant, whereas those primed with SLBs expressed more positive attitudes and a desire to help the anti-White bias claimant. Implications for affirmative action litigation are discussed.     

Towards the DSM‐5 Criteria for Autism: Clinical,Cultural, and Research Implications

The new edition of the DSM is proposing significant changes to current diagnostic definitions of autism and related conditions. In this article, we will discuss the clinical, research, and cultural implications of these changes. We conclude that the new criteria appear to better reflect current understanding of the autism spectrum disorder than the current DSM‐IV criteria. As expected with any major change in classification systems, there are also significant risks, which will have to be carefully monitored and addressed by both policy makers and the scientific community to ensure that best clinical practice and research are facilitated and advanced.     

Empirical Content and Rational Constraint

It is often thought that epistemic relations between experience and belief make it possible for our beliefs to be about or “directed towards” the empirical world. I focus on an influential attempt by John McDowell to defend a view along these lines. According to McDowell, unless experiences are the sorts of things that can be our reasons for holding beliefs, our beliefs would not be “answerable” to the facts they purportedly represent, and so would lack all empirical content. I argue that there is no intelligible conception of what it is for beliefs to be answerable to the facts that supports McDowell's claim that our empirical beliefs must be justified by experience.     

Enhancing Social Goal Involvement through Cooperative Instructions

Expectancy and efficacy theories provide the foundation for the development of a measure of sport confidence. The Carolina Sport Confidence Inventory (CSCI) was conceptualized as a three-factor model represented by dispositional optimism, perceived competence, and perceived control. Two independent studies supported a two factor (dispositional optimism and perceived competence) 13- item model for the CSCI. The first study utilized exploratory factor analytic techniques, concurrent validity, social desirability assessment, internal consistency, and test-retest reliability to establish the psychometric properties of the CSCI. Study II employed confirmatory factor analytic techniques with a sample of 123 intercollegiate varsity athletes along with measures of convergent validity to provide further support for the two factor model and the psychometric properties of the instrument.     

A Review of Epigenetic Markers of Tobacco and Alcohol Consumption

Over the past two decades, advances in genetic technologies have posed unexpected challenges to the ethical and legal framework guiding the application of the most recent advances in healthcare technologies. By and large, these challenges have been successfully met by the introduction by statutes such as the Genetic Information Nondiscrimination Act (GINA). However, over the past several years, these advances in the ability to measure genetic (or heritable) contributions to medical illness have been joined by advances in epigenetic (or acquired) contributions to common medical illnesses. Unfortunately, the moral and legal framework for the use of these epigenetic technologies, which can objectively determine the presence of medical illnesses such as diabetes or the consumption of substances of abuse, is not as well developed. This communication provides an introduction to the fundamentals of epigenetics and then reviews how some of the latest advances in this technology can now be used to assess the consumption of alcohol and tobacco. Next, the possible mechanisms through which these tools could be employed clinically are discussed. Finally, the authors outline the potential for misuse of this technology and suggest that well-informed policy could play a critical role in shaping the optimal implementation of epigenetic technologies. Copyright © 2015 John Wiley & Sons, Ltd.     

The Religion–Health Connection Among African Americans: What Is the Role of Social Capital?

Researchers have expressed growing interest in factors that may explain the relationship between religious involvement and health‐related outcomes. Faith‐based organizations are a significant institution in African American communities, both serving religious/spiritual needs and providing an important source of social capital. These communities often suffer a disproportionate burden of health conditions as well. The present study examined the role of social capital (social support, interconnectedness, and community participation) in the relationship between religious involvement (beliefs and behaviours) and physical and emotional functioning and depressive symptoms, among a national probability sample of African Americans (N = 803). Participants completed telephone interviews. We used structural equation modelling to test hypotheses based on the theoretical model. Results indicate that interconnectedness played a modest mediational role in the relationship between religious behaviours/participation and depressive symptoms. Interconnectedness was predictive of fewer depressive symptoms and marginally with better emotional functioning. Findings highlight the importance of trust in and commitment to one's community for health and have implications for community‐based health promotion initiatives. Copyright © 2014 John Wiley & Sons, Ltd.     

Knowledge of and Interest in Genetic Results Among Parkinson Disease Patients and Caregivers

The purpose of the study is to investigate Parkinson disease (PD) patients’ and caregivers’ knowledge of and interest in genetic testing. Gaucher disease (GD) results from recessive mutations in glucocerebrosidase (GBA). Both heterozygote GBA carriers and GD patients are at greater risk for PD. Studies regarding knowledge of and interest in genetic testing have been limited and have not offered genetic results to participants. In this study, 353 PD patients and 180 caregivers were recruited to a PD genetic study. The association between GD, GBA mutations and PD was described to participants who reported their familiarity with genetic terms, answered questions on genetic concepts, and indicated their interest in knowing if they may have GD (two GBA mutations) and other genetic information that could impact their health. Ninety-three-percent of participants were interested in receiving GBA results; however, only 51.6 % of PD participants and 55.6 % of caregivers knew that “scientists have identified genes associated with a higher risk of developing PD.” PD patients may benefit from education and genetic counseling on the implications of genetic testing.