The influence of alcohol and weapon presence on eyewitness memory and confidence

In this quasi-experimental field study, bar drinkers (0.00–0.23% blood alcohol content) viewed a photographic sequence in which a male took a laptop from a helpdesk assistant, either on loan or at gunpoint. Following a brief retention period, participants answered 20 multiple-choice questions about the male, his actions, and details of the scene, then attempted to identify him from a simultaneous target-present or target-absent line-up. Alcohol was associated with a reduction in correct identifications and an increase in false identifications. Surprisingly, the presence of a weapon in the scene enhanced identification accuracy, though wider scene memory was not influenced by alcohol or the weapon. Findings offer some support for the view that alcohol restricts face encoding, perhaps through the narrowing of attention to salient external features (e.g., hair). We also suggest that curiosity about mock-crime perpetrators may produce weapon focus reversals, although the factors that might elicit such curiosity remain unclear.     

ONE-SHOT VIEW INVARIANCE IN A MOVING WORLD

Abstract— How do people recognize an object in a novel orientation? Psychophysical and neurophvsiological studies have suggested that extensive practice is required before observers can recognize an object that has been rotated to a new orientation Because object orientation frequently vanes with object movement, we examined whether observers might more readily recognize a moving object in a new orientation Results from a priming study indicate that motion significantly arid readily enhances the recognition of new object orientations when those orientations fait within the path of the motion That is motion promotes view-invariant object recognition without practice     

Emotional Reactions to COVID-19 Projections and Consequences for Protective Policies and Personal Behavior

How does the public react to information about the likely progression of COVID-19 cases in the United States? How do these reactions vary over the course of the pandemic and by partisanship, and with what consequences for policy attitudes and personal behavior? We argue that reading projections about the peak of COVID-19 cases in the United States is likely to lead to increased levels of anxiety and sadness. We expect that these effects will be more pronounced and less polarized along partisan lines earlier in the pandemic. Finally, we expect that elevated anxiety and sadness should in turn lead to greater support for protective policies to combat the pandemic and a greater inclination to engage in protective behaviors. To test these arguments, we fielded online survey experiments at three points in time (April, June, and August 2020), in which respondents were randomly assigned to a control group or one of two projections about the likely progression of COVID-19 cases in the United States. Across all three waves, we find that exposure to information about case peaks increases anxiety and sadness, though the effects get weaker over time, particularly among Republicans. We also find evidence that these elevated emotional responses increase support for protective policies and behavior.     

Practitioners’ perspectives on the use of clinical supervision in their therapeutic engagement with asylum seekers and refugee clients

The present study is the first study undertaken in Australia that seeks to explore practitioners’ perspectives on the use of clinical supervision in their therapeutic engagement with asylum seekers and refugees. We used thematic analysis to analyse extracts of interviews that were conducted with nine professionals who worked therapeutically with asylum seekers and refugees and had experience of participating in individual and peer supervision. The findings of the study suggest that supervision encouraged practitioners to develop multicultural awareness and explore therapeutic ways of working that are compatible with their clients’ frame. In addition, supervision provided the context in which practitioners explored the impact of the asylum legislative framework on their clinical work and reflected upon their feelings of powerlessness and political impotence. Implications for practice that derive from supervisory needs of practitioners who work with asylum seekers and refugees are explored.     

Measuring illness representations in breast cancer survivors (BCS) prescribed tamoxifen: Modification and validation of the Revised Illness Perceptions Questionnaire (IPQ-BCS)

Objective: The Revised Illness Perceptions Questionnaire (IPQ-R), widely used to assess illness perceptions, may fail to measure unique characteristics of different illnesses. This study modified and validated the IPQ-R for breast cancer survivors to provide detailed understanding of the specific illness perceptions held by these patients.

Design: Initial modifications were made following qualitative interviews and were revised in a think-aloud study. The modified scale was tested in 753 breast cancer survivors prescribed tamoxifen. Modifications included adding a tamoxifen consequences scale and adapting the timeline scales to measure beliefs around risk of recurrence and cure. A confirmatory factor analysis was conducted on the modified questionnaire and an exploratory factor analysis on the causal beliefs scale. Test–retest reliability, internal consistency and construct validity were also examined.

Results: The proposed eight-factor structure showed acceptable model fit, with high loadings and good reliability for all subscales. Correlations between subscales were consistent with theory and previous research.

Conclusions: The IPQ-BCS is valid and reliable, and provides unique understanding of specific perceptions held by this population, including beliefs surrounding risk of recurrence and consequences of ongoing hormonal treatment. Identifying these perceptions will aid development of interventions targeting depression, fear of recurrence and medication non-adherence.     

Yohimbine impairs extinction of cocaine-conditioned place preference in an alpha2-adrenergic receptor independent process

Extinction, a form of learning that has the ability to reshape learned behavior based on new experiences, has been heavily studied utilizing fear learning paradigms. Mechanisms underlying extinction of positive-valence associations, such as drug self-administration and place preference, are poorly understood yet may have important relevance to addiction treatment. Data suggest a major role for the noradrenergic system in extinction of fear-based learning. Employing both pharmacological and genetic approaches, we investigated the role of the alpha(2)-adrenergic receptor (alpha(2)-AR) in extinction of cocaine-conditioned place preference (CPP) and glutamatergic transmission in the bed nucleus of the stria terminalis (BNST). We found that pre-extinction systemic treatment with the alpha(2)-AR antagonist yohimbine impaired cocaine CPP extinction in C57BL/6J mice, an effect that was not mimicked by the more selective alpha(2)-AR antagonist, atipamezole. Moreover, alpha(2A)-AR knockout mice exhibited similar cocaine CPP extinction and exacerbated extinction impairing effects of yohimbine. Using acute brain slices and electrophysiological approaches, we found that yohimbine produces a slowly evolving depression of glutamatergic transmission in the BNST that was not mimicked by atipamezole. Further, this action was extant in slices from alpha(2A)-AR knockout mice. Our data strongly suggest that extinction-modifying effects of yohimbine are unlikely to be due to actions at alpha(2A)-ARs.