Distress intolerance and worry: the mediating role of cognitive variables

Background and Objectives: Distress intolerance (DI) has been identified as a potential risk factor for a variety of maladaptive avoidance behaviors, including worry. However, mechanisms linking DI to specific behaviors remain poorly understood. One hypothesis is that DI is a general vulnerability that confers risk of particular avoidance behaviors via more specific, lower-order vulnerabilities. The current study examined associations between DI and worry-related cognitions. Design: A multiple mediator model tested the hypothesis that worry-related variables (intolerance of uncertainty [IU], cognitive avoidance, beliefs about worry, and negative problem orientation) mediated the association between DI and worry. Methods: An undergraduate student (n = 281) and a clinical (n = 123) sample completed self-report measures. Results: Across samples, worry was associated with higher levels of DI, IU, cognitive avoidance, beliefs about worry, and negative problem orientation. Mediation results differed somewhat between the two samples. In the undergraduate sample, IU, negative beliefs about worry, and positive beliefs about worry mediated the association between DI and worry. In the clinical sample, negative problem orientation and negative beliefs about worry mediated the association between DI and worry. Conclusions: Results provide initial evidence that DI may be associated with worry via unique risk factors.     

Cortisol,stress, and attentional bias toward threat

Abstract

Attentional bias toward threatening stimuli is a central characteristic of anxiety and acute stress. Recent small-scale studies have provided divergent perspectives on the association between the stress hormone cortisol and attentional bias toward threat cues. In a larger sample size than previous studies, we examined this association by investigating the impact of cortisol on attentional bias in two studies using a psychological stressor (N=35) and a physical stressor (N=65), respectively. Attentional bias and salivary cortisol were measured prior to and following the administration of a stressful task designed to increase cortisol levels. Results across these studies were equivocal relative to the association between baseline cortisol and baseline attentional bias. In addition, the association between acute change in cortisol and change in attentional bias appeared to differ as a function of the presence or absence of psychological stress. There was a trend toward a stronger negative association between acute cortisol change and attentional bias change among women relative to men. These results imply that the association between cortisol and attentional bias may be moderated by additional factors, such as gender or presence of stress.     

Fostering Social Competence in Preschool Children Exposed to Intimate Partner Violence: Evaluating the Preschool Kids' Club Intervention

This study assessed whether participation in an intervention program enhanced social competence in 113 preschool-aged children who were exposed to intimate partner violence. Change in competence was evaluated from baseline to approximately five weeks postbaseline and compared preschool children who did and did not receive intervention services. Protective factors, such as exposure to less severe violence, were identified that predicted change in competence scores. Results indicated that children with the highest social competence pre-intervention exhibited a significant increase in their postintervention scores, if they participated in the program. The extent of this change was predicted by a higher preintervention score and exposure to less severe violence. This study indicates that even short-term intervention could result in meaningful change in key aspects of child functioning.     

REM Sleep Bout Duration and Frequency in PTSD

The few pharmacological treatments shown to be effective in reducing sleep disturbance in posttraumatic stress disorder (PTSD) might work through normalization of rapid eye movement (REM). However, evidence of REM sleep disturbance in PTSD has been inconsistent and the definition of REM bout has varied as well. In this study, we compared polysomnographic findings in adults with PTSD to both normal sleepers and insomniacs. We found no differences between those with and without PTSD on REM bout frequency or duration. We did, however, find gender differences within our PTSD sample as consistent with a previous review suggesting that males with PTSD are more likely to demonstrate REM sleep disturbance. Consensus on REM bout definition is needed, in addition to studies powered to detect gender differences.     

Trauma Exposure and Health: A Review of Outcomes and Pathways

A growing body of literature has established robust relations between trauma and a variety of adverse physical health outcomes. In both retrospective and prospective research, adults with a history of self-reported or court-substantiated maltreatment report significantly more health concerns than those without maltreatment histories, in both clinical and community samples, whether health problems are self-reported or physician-diagnosed. Two pathways by which poor health outcomes are theorized to occur include the biological pathway, which largely implicates severe stress and subsequent dysregulations in central stress-response systems as the underlying cause of health problems, and the behavioral pathway, which suggests that health risk behaviors are largely responsible for the relations between trauma and health. This article reviews the research evaluating the relations between various types of trauma, particularly physical and sexual abuse in childhood, and three such health outcomes: pain, gastrointestinal disorders, and cardiovascular disease. Evidence to support the biological and behavioral pathways is also reviewed.     

A Brief Report on Predicting Self-Harm: Is It Gender or Abuse that Matters?

Self-harm, which consists of nonsuicidal self-injury and attempted suicide, is a public health problem that is not well understood. There is conflicting evidence on the role of gender in predicting self-harm. Abuse history also is a potentially relevant factor to explore, as it is related to both gender and self-harm. In this study, we hypothesized that abuse history, as opposed to gender, would predict self-harm. Three hundred and ninety-seven undergraduates completed a self-report survey that assessed abuse history, nonsuicidal self-injury, and attempted suicide. The results suggested that abuse history predicted nonsuicidal self-injury and attempted suicide. These findings can inform clinical interventions as they reinforce the importance of including abuse history in the conceptualizations and treatment of self-harm.     

Modulation of reflexive orienting to gaze direction by facial expressions

Facial expression and gaze perception are thought to share brain mechanisms but behavioural interactions, especially from gaze-cueing paradigms, are inconsistent. We conducted a series of gaze-cueing studies using dynamic facial cues to examine orienting across different emotional expression and task conditions, including face inversion. Across experiments, at a short stimulus–onset asynchrony (SOA) we observed both an expression effect (i.e., faster responses when the face was emotional versus neutral) and a cue validity effect (i.e., faster responses when the target was gazed-at), but no interaction between validity and emotion. Results from face inversion suggest that the emotion effect may have been due to both facial expression and stimulus motion. At longer SOAs, validity and emotion interacted such that cueing by emotional faces, fearful faces in particular, was enhanced relative to neutral faces. These results converge with a growing body of evidence that suggests that gaze and expression are initially processed independently and interact at later stages to direct attentional orienting.     

Mapping the similarity space of paintings: Image statistics and visual perception

What makes two images look similar? Here we test the hypothesis that perceived similarity of artwork is related to basic image statistics to which the early visual system is attuned. In two experiments, we employ multidimensional scaling (MDS) analysis of paired-image similarity ratings from observers for paintings. Two sets of images, classified as “landscapes” and “portraits/still-life”, are tested separately. For the landscapes, we find that one of the first two MDS scales of similarity is strongly correlated with a basic greyscale image statistic, whereas the other dimension can be accounted for by a semantic variable (representation of people). For portrait/still-life, the first two MDS scales of similarity are most highly correlated with semantic variables. Linear combinations of statistical and nonstatistical features achieve improved predictive values for the first two MDS scales for both sets. The statistics that play the largest role in shaping similarity judgements in our tests are the activity fraction measure of sparseness and the log-log slope of the spatial frequency amplitude spectrum. We discuss these results in the context of scene perception and in terms of efficient coding of statistical regularities in scenes.     

Education for Life Scientists on the Dual-Use Implications of Their Research

Advances in the life sciences are occurring with extreme rapidity and accumulating a great deal of knowledge about life’s vital processes. While this knowledge is essential for fighting disease in a more effective way, it can also be misused either intentionally or inadvertently to develop novel and more effective biological weapons. For nearly a decade civil-academic society as well as States Parties to the Biological and Toxin Weapons Convention have recognised the importance of dual-use biosecurity education for life scientists as a means to foster a culture of responsibility and prevent the potential misuse of advances in the life sciences for non-peaceful purposes. Nevertheless, the implementation of dual-use biosecurity education for life scientists has made little progress in institutions of higher learning. Professional societies and academic organizations have worked from the bottom-up in developing online dual-use biosecurity education modules that can be used for instruction. However, top-down help is needed from goverments if further progress is to be made in implementing biosecurity education for life scientists.     

An Application of the Rorschach INK Blot Test to Three Clinical Types of Dementia Praecox

At the beginning of an introductory course in psychology, 227 students were asked to define ordinary everyday English words and to guess the technical psychological concepts represented. In the final examination for the course, questions were inserted that required the students to understand the concepts and to know the terminology. From a comparison of responses at the beginning and end of the term it seems that negative transfer was not involved or, if present, was well overcome.