Approach-withdrawal and the role of the striatum in the temperament of behavioral inhibition

Behavioral inhibition is a temperament characterized in infancy and early childhood by a tendency to withdraw from novel or unfamiliar stimuli. Children exhibiting this disposition, relative to children with other dispositions, are more socially reticent, less likely to initiate interaction with peers, and more likely to develop anxiety over time. Until recently, a dominant model attributed this disposition to reductions in the threshold for engaging the circuitry supporting fear learning, particularly the amygdala. Recent work, however, also has implicated striatal circuitry and other regions that constitute components of a presumed reward system. A series of studies found that behaviorally inhibited adolescents display heightened activation of striatal structures to cues indicating an opportunity to receive reward. This article reviews evidence implicating dual roles for fear and reward circuitry in the expression of behavioral inhibition.     

"God must have been sleeping": faith as an obstacle and a resource for Rwandan genocide survivors in the United States

In 1994, 1 million Rwandans were violently killed in only 100 days. Devastating for some Rwandan survivors was the significant role that some Catholic parishes and leaders took in ignoring, facilitating, and even perpetuating the genocide. This article seeks to understand how Rwandan genocide survivors draw on religion as they negotiate their postgenocide identities in the United States and comprehend their current faiths, beliefs, and practices. Based on qualitative interviews with Rwandan survivors now located within the United States, I argue that the experiences of religiosity postgenocide serve as both an obstacle and a resource in postgenocide life, creating significant individual and local ramifications for community engagement, reconciliation, and trauma recovery.     

Transdermal nicotine during cue reactivity in adult smokers with and without anxiety disorders

Transdermal nicotine almost doubles tobacco cessation rates; however, little is known about what happens to smokers during the quit process when they are wearing the nicotine patch and are confronted with high-risk smoking triggers. This is particularly important for smokers with psychological disorders who disproportionately represent today's smokers and have more trouble quitting. Using a mixed between- and within-subjects design, smokers with anxiety disorders (n = 61) and smokers without any current Axis I disorders (n = 38) received transdermal nicotine (21 mg) or a placebo patch over two assessment days separated by 48 hr. Urge to smoke was evaluated during a 5-hr patch absorption period (reflecting general smoking deprivation) and during imaginal exposure to theoretically high-risk triggers containing smoking cues, anxiety cues, both, or neutral cues. No differences were observed between smokers with and without anxiety disorders. Significant Patch × Time and Patch × Cue Content interactions were found. Both patch conditions experienced an increase in urge during the deprivation period, but postabsorption urge was significantly higher in the placebo condition, suggesting that transdermal nicotine attenuated the degree to which urge to smoke increased over time. During the cue reactivity trials, when participants received the nicotine patch, they experienced significantly lower urge in response to both smoking-only and neutral cues, but not when anxiety cues were present (alone or in combination with smoking cues). These data suggest that transdermal nicotine alleviates urge only under certain circumstances and that adjunctive interventions are likely necessary to address smoking urges in response to spikes in distress among smokers trying to quit. (PsycINFO Database Record (c) 2012 APA, all rights reserved).     

Effect of Pre-test Genetic Counseling for Deaf Adults on Knowledge of Genetic Testing

Empirical data on genetic counseling outcomes in the deaf population are needed to better serve this population. This study was an examination of genetics knowledge before and after culturally and linguistically appropriate pre-test genetic counseling in a diverse deaf adult sample. Individuals ≥18?years old with early-onset sensorineural deafness were offered connexin-26/30 testing and genetic counseling. Participants completed questionnaires containing 10 genetics knowledge items at baseline and following pre-test genetic counseling. The effects of genetic counseling, prior beliefs about etiology, and participant's preferred language on genetics knowledge scores were assessed (n?=?244). Pre-test genetic counseling (p?=?.0007), language (p?相似文献   

Flexible attention deployment in threatening contexts: An instructed fear conditioning study

Factors leading humans to shift attention away from danger cues remain poorly understood. Two laboratory experiments reported here show that context interacts with learning experiences to shape attention avoidance of mild danger cues. The first experiment exposed 18 participants to contextual threat of electric shock. Attention allocation to mild danger cues was then assessed with the dot-probe task. Results showed that contextual threat caused subjects to avert attention from danger cues. In the second experiment, 36 participants were conditioned to the same contextual threat used in Experiment 1. These subjects then were randomly assigned to either an experimental group, trained to shift attention toward danger cues, or a placebo group exposed to the same stimuli without the training component. As in Experiment 1, contextual threat again caused attention allocation away from danger in the control group. However, this did not occur in the experimental group. These experiments show that acute contextual threat and learning experiences interact to shape the deployment of attention away from danger cues. (PsycINFO Database Record (c) 2012 APA, all rights reserved).     

The dimensionality of counterproductivity: Are all counterproductive behaviors created equal?

Most studies of counterproductive work behavior (CWB) assess it as one or two overall dimensions that might obscure relationships of potential antecedents with more specific forms of behavior. A finer-grained analysis of the relationship between counterproductive work behavior and antecedents was conducted with the five-subscales (abuse toward others, production deviance, sabotage, theft, and withdrawal) taken from the 45-item Counterproductive Work Behavior Checklist, a measure that has been used in a number of prior studies. Described is the rationale for each of the five dimensions, which have been discussed individually in the literature. Data from three combined studies provide evidence for differential relationships with potential antecedents that suggest the use of more specific subscales to assess CWB. Most notably, abuse and sabotage were most strongly related to anger and stress, theft was unrelated to emotion, and withdrawal was associated with boredom and being upset. Finally, the distinct forms of CWB may suggest distinct underlying dynamics, that vary in their balance of hostile and instrumental motivational systems.     

Juggling Through Hoops: Implementing Ethics Policies in Applied Language Studies

This article reports on a collective effort to position ethics policies within the context of a specific discipline – Applied Language Studies (ALS). Through a discussion of challenges to ALS-specific pedagogical and research practices, this article highlights (1) the need for consistency across institutional Research Ethics Boards in the application of general principles of ethics review, and (2) the recognition of local considerations that are informed by disciplinary approaches not envisioned in current ethics policies. Ethics policies that are driven by substantive ethical intent will recognize pedagogical practices, research methodologies, and epistemological values and traditions that mark a discipline.     

Issue Salience, Perceived Efficacy and Perceived Risk: A Study of the Origins of Anti-Nuclear War Activity

One hundred eleven college students participated in this two-session experiment designed to explore the origins of anti-nuclear war activism. In Session 1 participants completed questionnaires assessing a number of background characteristics and attitudes, the most important of which for this study's purpose was a measure of perceived political efficacy in the nuclear realm. One week later both the salience of the nuclear weapons issue and participants' sense of personalized risk were experimentally manipulated in a 2 × 2 × 2 (salience × risk × measured efficacy) design. Dependent measures were a behavioral intentions questionnaire and an actual opportunity to sign a petition which participants did not recognize as part of the experiment. High salience significantly increased both anti-nuclear war behavioral intentions and actual behavior as predicted. Individuals who felt highly efficacious were also significantly more likely to take action than others as predicted. A similar relation between efficacy and behavioral intentions was not found, although a salience by efficacy interaction was. Personalized risk influenced only behavioral intentions. Finally, the relative impact of these three variables and of other background and attitudinal variables measured in the first session was explored using regression techniques.