Distress tolerance and experiential avoidance in compulsive acquisition behaviours

Compulsive buying (CB) is not only associated with impulse control disorders and specific domains of impulsivity, but is also highly comorbid with negative affect and depression, making it a candidate disorder to be characterised by poor emotion regulation. Despite emerging research supporting an association between distress tolerance and disorders of dysregulated behaviour, no study has investigated distress tolerance in the context of CB. The aim of the current study was to explore the relationship between CB and four specific domains of distress tolerance (appraisal, tolerance, absorption, regulation) and experiential avoidance. In a community‐recruited sample of compulsive buyers (n = 47) and healthy controls (n = 38), CB was significantly associated with each of the domains of distress tolerance (Distress Tolerance Scale). Furthermore, CB was associated with greater experiential avoidance (Acceptance and Action Questionnaire), which was in turn associated with each domain of distress tolerance. Analysis of variance demonstrated significant group differences in all measures. Nonparametric bootstrapping analysis revealed that general psychopathology, impulsivity, and experiential avoidance could not fully account for the relationship between distress tolerance and CB severity. Results suggest that distress tolerance and experiential avoidance may represent therapeutic targets in CB. Limitations and future directions are discussed.     

A review of professor mommy: finding work–family balance in academia

Rachel Connelly & Kristin Ghodsee. (2011). Professor Mommy: Finding Work–Family Balance in Academia. Lanham, MD: Rowman & Littlefield Publishing Group. 232 pages, $25.95 List. ISBN: 978‐1442208582.     

Exclusion,intergroup hostility,and religious fundamentalism

The goal of the present study was to examine whether exclusion leads to increased intergroup hostility and stronger fundamentalist religious beliefs. Using Cyberball, we examined how adolescents from different ethnic groups in the Netherlands (of Moroccan, Turkish, and Dutch descent with either Muslim, Christian, or secular beliefs) responded to being included or excluded by ethnic in- and outgroup members. We expected that exclusion by ethnic outgroup members would represent a categorization threat and would result in greater hostility. We hypothesized that exclusion by ethnic ingroup members would represent an acceptance threat and would result in responses that reduce uncertainty and increase one's chances of being accepted by others (e.g., a stronger endorsement of fundamentalist religious beliefs). The results revealed that among all ethnic groups, exclusion by ethnic outgroup members led to more hostility toward the co-players and the co-players' ethnic group than exclusion by ethnic ingroup members. This was mediated by the extent to which people attributed their exclusion to the racist attitudes of their co-players. Among Muslims and Christians, exclusion by ethnic ingroup members led to more support for fundamentalist beliefs. We discuss the theoretical extension that these results provide, and practical issues raised regarding the consequences that may occur through the marginalization of religious and ethnic groups.     

Assessment of Religious and Spiritual Capital in African American Communities

African American faith communities are an important source of social capital. The present study adapted a theory-based social capital instrument to result in religious (e.g., from organized worship) and spiritual (e.g., from relationship with higher power) capital measures. Data from a national sample of 803 African Americans suggest the instruments have high internal reliability and are distinct from general religiosity. Measurement models confirmed factor structures. Religious capital was positively associated with self-rated health status. Religious and spiritual capital were negatively associated with depressive symptoms, but these associations largely became nonsignificant in multivariate models that controlled for demographic characteristics. An exception is for spiritual capital in the form of community participation, which retained a negative association with depressive symptoms. These instruments may have applied value for health promotion research and practice in African American communities.     

Moore-paradoxical belief, conscious belief and the epistemic Ramsey test

Chalmers and Hájek argue that on an epistemic reading of Ramsey??s test for the rational acceptability of conditionals, it is faulty. They claim that applying the test to each of a certain pair of conditionals requires one to think that one is omniscient or infallible, unless one forms irrational Moore-paradoxical beliefs. I show that this claim is false. The epistemic Ramsey test is indeed faulty. Applying it requires that one think of anyone as all-believing and if one is rational, to think of anyone as infallible-if-rational. But this is not because of Moore-paradoxical beliefs. Rather it is because applying the test requires a certain supposition about conscious belief. It is important to understand the nature of this supposition.     

PLATE A–PLATE B: USE OF SEQUENTIAL PRESENTATION IN THE TREATMENT OF FOOD SELECTIVITY

This study examined the effects of sequential presentation of foods on increasing acceptance of novel foods in a 16‐year‐old boy with autism spectrum disorder residing in a short‐term behavioral stabilization unit. The participant ate only 10 foods and one beverage prior to treatment. The intervention involved presenting a plate containing pea‐sized bites of novel foods (Plate A) and a plate containing spoonful‐sized bites of highly preferred foods (Plate B). After the participant consumed a bite from Plate A, he chose a bite from Plate B and was given a preferred beverage. The intervention, involving sequential presentation and establishing operations without the use of escape extinction, was successful in increasing the number of foods eaten from 10 to 24 while not increasing his maladaptive behaviors. Copyright © 2012 John Wiley & Sons, Ltd.     

Impaired associative taste learning and abnormal brain activation in kinase-defective eEF2K mice

Memory consolidation is defined temporally based on pharmacological interventions such as inhibitors of mRNA translation (molecular consolidation) or post-acquisition deactivation of specific brain regions (systems level consolidation). However, the relationship between molecular and systems consolidation are poorly understood. Molecular consolidation mechanisms involved in translation initiation and elongation have previously been studied in the cortex using taste-learning paradigms. For example, the levels of phosphorylation of eukaryotic elongation factor 2 (eEF2) were found to be correlated with taste learning in the gustatory cortex (GC), minutes following learning. In order to isolate the role of the eEF2 phosphorylation state at Thr-56 in both molecular and system consolidation, we analyzed cortical-dependent taste learning in eEF2K (the only known kinase for eEF2) ki mice, which exhibit reduced levels of eEF2 phosphorylation but normal levels of eEF2 and eEF2K. These mice exhibit clear attenuation of cortical-dependent associative, but not of incidental, taste learning. In order to gain a better understanding of the underlying mechanisms, we compared brain activity as measured by MEMRI (manganese-enhanced magnetic resonance imaging) between eEF2K ki mice and WT mice during conditioned taste aversion (CTA) learning and observed clear differences between the two but saw no differences under basal conditions. Our results demonstrate that adequate levels of phosphorylation of eEF2 are essential for cortical-dependent associative learning and suggest that malfunction of memory processing at the systems level underlies this associative memory impairment.     

Dorsal striatal dopamine depletion impairs both allocentric and egocentric navigation in rats

Successful navigation requires interactions among multiple but overlapping neural pathways mediating distinct capabilities, including egocentric (self-oriented, route-based) and allocentric (spatial, map-based) learning. Route-based navigation has been shown to be impaired following acute exposure to the dopaminergic (DA) drugs (+)-methamphetamine and (+)-amphetamine, but not the serotoninergic (5-HT) drugs (±)-3,4-methylenedioxymethamphetamine or (±)-fenfluramine. The dopaminergic-rich neostriatum is involved in both allocentric and egocentric navigation. This experiment tested whether dorsal striatal DA loss using bilateral 6-hydroxydopamine (6-OHDA) injections impaired one or both types of navigation. Two weeks following 6-OHDA injections, rats began testing in the Cincinnati water maze (CWM) followed by the Morris water maze (MWM) for route-based and spatial navigation, respectively. 6-OHDA treatment significantly increased latency and errors in the CWM and path length, latency, and cumulative distance in the MWM with no difference on cued MWM trials. Neostriatal DA levels were reduced by 80% at 2 and 7 weeks post-treatment. In addition, 6-OHDA increased DA turnover and decreased norepinephrine (NE) levels. 6-OHDA injections did not alter monoamine levels in the prefrontal cortex. The data support that neostriatal DA modulates both types of navigation.