Dynamic dominance persists during unsupported reaching

Previous studies examining lateralization of arm movements focused on supported movements in the horizontal plane, removing the effects of gravity. The authors hypothesized that interlimb differences in free reaching would be consistent with the differences shown during supported reaching. Kinematic and kinetic data were collected for the forearm and upper arm segments in a 3-direction reaching task. Results showed lateralization of coordination, reflected by initial movement direction and trajectory curvature. The nondominant arm showed increased initial direction errors, and path curvature associated with a timing deficit between elbow and shoulder peak torques. These coordination deficits did not disrupt final position accuracy. The authors conclude that nondominant arm coordination deficits are similar to those reported previously for horizontal plane movements.     

Humor styles impact the relationship between symptoms of social anxiety and depression

Recent research suggests that examining humor styles may contribute to our understanding of clinical problems, such as risk and resiliency. The goal of the current study was to examine whether humor styles moderate the association between social anxiety and depressive symptoms in an unselected sample. Three-hundred and six participants (66% female) at a large Southern US university completed self-report measures of humor styles and symptoms of social anxiety and depression. Regression analyses suggested that affiliative and self-defeating humor styles individually moderated the relationship between social anxiety and depressive symptoms. Clinical implications regarding the monitoring of humor use as a means of understanding the maintenance of depressive symptoms among socially anxious individuals are discussed.     

Dissociating object-based and space-based affordances

In what we term the orientation effect, faster spatial responses are made to the corresponding task irrelevant orientation of an object. We ask how this effect relates to object affordances, how attention may be involved, and how the effect relates to the better understood Simon effect. Two separate stimulus-response compatibility effects (an orientation effect and a Simon effect) were observed when spatial responses were made to photographs of objects whose orientation and location had been simultaneously manipulated. When attentional demands were high these separate effects were found using hand responses and foot responses, suggesting an abstract rather than specific coding of object affordances. However, when attentional demands were low only the Simon effect was observed, suggesting that, in order to obtain the orientation effect, objects must be represented at the level of an object.     

Intersecting cultural identities and help-seeking attitudes: the role of religious commitment,gender, and self-stigma of seeking help

ABSTRACT

The current study (N?=?404) used a moderated moderation model to examine how gender, religious commitment, and self-stigma toward seeking psychological help may interact in the prediction of help-seeking attitudes. Bivariate zero-order correlations indicated that help-seeking attitudes was negatively associated with self-stigma of seeking help (r?=??.55) and positively associated with religious commitment (r?=?.14), and self-stigma was not significantly associated with religious commitment. Men reported more negative attitudes than women (ΔM?=??.18). Furthermore, multiple regression results revealed a three-way interaction such that the relationship between gender and help-seeking attitudes was moderated by both self-stigma and religious commitment. Specifically, men with high religious commitment and high self-stigma endorsed the most negative help-seeking attitudes, suggesting that religious men’s help-seeking attitudes may be particularly susceptible to the influence of self-stigma. Implications for research and the development of targeted interventions are discussed.     

Unintended Diagnosis of Von Hippel Lindau Syndrome Using Array Comparative Genomic Hybridization (CGH): Counseling Challenges Arising from Unexpected Information

Array Comparative Genomic Hybridization (array CGH) is a powerful tool for identifying genomic imbalances and providing a diagnosis in individuals with a normal karyotype. It has been particularly useful in the investigation of individuals with developmental delay +/?, dysmorphic features and/or multiple congenital abnormalities. However, this non-targeted method of scanning the whole genome can reveal unexpected information. We present a case where array CGH identified the cause of a proband’s moderate mental retardation by discovery of a de novo deletion of chromosome 3p25.3. This deletion was shown to contain at least 25 genes including the VHL gene, the deletion or mutation of which leads to Von Hippel Lindau (VHL) syndrome. Presymptomatic testing for VHL is usually offered after appropriate genetic counseling about the implications of this condition. Therefore, scanning the genome by array CGH presents a number of challenges for the genetic counselor. We suggest that further understanding of the psychosocial effects of array CGH is needed in order for appropriate pre- and post-test counseling to be provided.     

Perceptual Justification and Warrant by Default

As I use the term, ‘entitlement’ is any warrant one has by default—i.e. without acquiring it. Some philosophers not only affirm the existence of entitlement, but also give it a crucial role in the justification of our perceptual beliefs. These philosophers affirm the Entitlement Thesis: that an essential part of what makes our perceptual beliefs justified is our entitlement to the proposition that I am not a brain-in-a-vat. Crispin Wright, Stewart Cohen and Roger White are among those who endorse this controversial claim. In this paper, I argue that the Entitlement Thesis is false.     

Interaction effects among multiple job demands: an examination of healthcare workers across different contexts

Background and Objectives: Simultaneous exposure to time, cognitive, and emotional demands is a feature of the work environment for healthcare workers, yet effects of these common stressors in combination are not well established. Design: Survey data were collected from 125 hospital employees (Sample 1, Study 1), 93 ambulance service employees (Sample 2, Study 1), and 380 aged care/disability workers (Study 2). Methods: Hierarchical multiple regressions were conducted. Results: In Sample 1, high cognitive demand exacerbated high emotional demand on psychological strain and job burnout, whereas the negative effect of high emotional demand was not present at low cognitive demand. In Sample 2, a similar pattern between emotional demand and time demand on stress-remedial intentions was observed. In Study 2, emotional demand?×?time demand and time demand?×?cognitive demand interactions again revealed that high levels of two demands were stress-exacerbating and low levels of one demand neutralized the other. A three-way interaction on job satisfaction showed the negative impact of emotional demand was exacerbated when both time and cognitive demands were high, creating a “triple disadvantage” of job demands. Conclusions: The results demonstrate that reducing some job demands helps attenuate the stressful effects of other job demands on different employee outcomes.     

Frontal cortex functioning in the infant broader autism phenotype

Atypical attention has been proposed as a marker of the broader autism phenotype. In the present study we investigated this and the related process of inhibitory control at the youngest possible age through the study of infant siblings of children with an autism spectrum disorder (Sibs-ASD). Both attention and inhibition have been related to the frontal cortex of the brain. Nine- to ten-month-old Sibs-ASD and low-risk control infants completed the Freeze-Frame task, in which infants are encouraged to inhibit looks to peripherally presented distractors whilst looking at a central animation. The attractiveness of the central stimulus is varied in order to investigate the selectivity of infants’ responses. In line with previous studies, it was found that a subset of Sibs-ASD infants had difficulty disengaging attention from a central stimulus in order to orient to a peripheral stimulus. The Sibs-ASD group also showed less Selective Inhibition than controls. However, Sibs-ASD infants did demonstrate Selective Inhibitory Learning. These results provide preliminary evidence for atypical frontal cortex functioning in the infant broader autism phenotype.