Serial reversal learning in bumblebees (Bombus impatiens)

Bumblebees are capable of rapidly learning discriminations, but flexibility in bumblebee learning is less well understood. We tested bumblebees (Bombus impatiens) on a serial reversal learning task. A serial reversal task requires learning of an initial discrimination between two differentially rewarded stimuli, followed by multiple reversals of the reward contingency between stimuli. A reduction in errors with repeated reversals in a serial reversal task is an indicator of behavioural flexibility. Bees were housed in a large indoor environment and tested during foraging flights. Testing free-flying bees allowed for large numbers of trials and reversals. All bees were trained to perform a simultaneous discrimination between two colours for a nectar reward, followed by nine reversals of this discrimination. Results showed that bumblebees reduced errors and improved their performance across successive reversals. A reduction in perseverative errors was the major cause of the improvement in performance. Bees showed a slight increase in error rate in their final trials, perhaps as a consequence of increasing proactive interference, but proactive interference may also have contributed to the overall improvement in performance across reversals. Bumblebees are thus capable of behavioural flexibility comparable to that of other animals and may use proactive interference as a mechanism of behavioural flexibility in varying environments.     

“It's Only Other People Who Make Me Feel Black”: Acculturation,Identity, and Agency in a Multicultural Community

This article explores identity work and acculturation work in the lives of British mixed‐heritage children and adults. Children, teenagers, and parents with mixed heritage participated in a community arts project that invited them to deliberate, construct, and reconstruct their cultural identities and cultural relations. We found that acculturation, cultural and raced identities, are constructed through a series of oppositional themes: cultural maintenance versus cultural contact; identity as inclusion versus identity as exclusion; institutionalized ideologies versus agency. The findings point towards an understanding of acculturation as a dynamic, situated, and multifaceted process: acculturation in movement. To investigate this, we argue that acculturation research needs to develop a more dynamic and situated approach to the study of identity, representation, and culture. The article concludes with a discussion on the need for political psychologists to develop methods attuned to the tensions and politics of acculturation that are capable of highlighting the possibilities for resistance and social change.     

Flow experience and team performance: The role of team goal commitment and information exchange

While a number of studies show that the flow experience is related to different outcomes at the individual level, the role of flow in work teams remains unclear. This study contributes to the advancement of knowledge on flow by testing the relationships between this psychological state, team goal commitment and team performance. Data were gathered from 85 teams comprised of graduate and undergraduate students who participated in a project management simulation. The results show that the flow experience is positively related to team performance. This relationship is mediated by team goal commitment and moderated by the level of information exchange between team members. In practical terms, the results of this study show that managers should implement interventions fostering the flow experience in their teams, while at the same time encouraging information exchange between members.     

Working With Clients Who Self‐Injure: A Grounded Theory Approach

This article presents the findings of a qualitative study examining the experiences of counselors in their work with clients who self‐injure. Using grounded theory methodology, the authors established 6 categories to explain the counselors’ conceptualization of self‐injury and their process of working with these clients: (a) external factors to self‐injury, (b) defining self‐injury, (c) potential for harm, (d) conditions for treatment, (e) counselors’ reactions to working with clients who self‐injure, and (f) clients’ response to treatment.     

Cross‐examination: The Testimony of Children With and Without Intellectual Disabilities

The present study assessed how children with a range of cognitive abilities fared during a mock cross‐examination. Ninety children (aged 4 to 11 years; 18 with intellectual disabilities, 13 with borderline intellectual disabilities and 59 who were typically developing) witnessed a staged event, participated in an initial forensic interview (a few days later) and were cross‐examined by a barrister‐in‐training (10 months later). During cross‐examination, 98% of all children changed at least one response from their initial interview when challenged. However, group differences in performance (total number of changed responses, ‘resistance’ to challenges), controlling for age and memory for event details, were not significant or did not prove reliable at the level of individual group contrasts. Overall, little robust evidence for group differences in performance on cross‐examination could be identified, and memory for event details was the most reliable predictor of performance. Copyright © 2013 John Wiley & Sons, Ltd.     

The effects of emotion regulation strategies on positive and negative affect in early adolescents

Recent research suggests that impaired emotion regulation (ER) may play an important role in the development of youth psychopathology. However, little research has explored the effects of ER strategies on affect in early adolescents. In Study 1 (n?=?76), we examined if early adolescents are able to use distraction and whether the effects of this strategy are similar to talking to one’s mother. In Study 2 (n?=?184), we compared the effects of distraction, cognitive reappraisal, acceptance, and rumination. In both studies, participants received instructions on how to regulate their emotions after a standardised negative mood induction. In general, the results indicated that distraction, but also cognitive reappraisal and acceptance, had promising short-term effects on positive and negative affect in early adolescents. These findings suggest that targeting adaptive ER skills, such as distraction, acceptance, and cognitive reappraisal, may be an important strategy to prevent or treat psychological problems in early adolescents.     

Clinical Utility of Expanded Carrier Screening: Reproductive Behaviors of At-Risk Couples

Expanded carrier screening (ECS) analyzes dozens or hundreds of recessive genes to determine reproductive risk. Data on the clinical utility of screening conditions beyond professional guidelines are scarce. Individuals underwent ECS for up to 110 genes. Five-hundred thirty-seven at-risk couples (ARC), those in which both partners carry the same recessive disease, were invited to participate in a retrospective IRB-approved survey of their reproductive decision making after receiving ECS results. Sixty-four eligible ARC completed the survey. Of 45 respondents screened preconceptionally, 62% (n = 28) planned IVF with PGD or prenatal diagnosis (PNDx) in future pregnancies. Twenty-nine percent (n = 13) were not planning to alter reproductive decisions. The remaining 9% (n = 4) of responses were unclear. Of 19 pregnant respondents, 42% (n = 8) elected PNDx, 11% (n = 2) planned amniocentesis but miscarried, and 47% (n = 9) considered the condition insufficiently severe to warrant invasive testing. Of the 8 pregnancies that underwent PNDx, 5 were unaffected and 3 were affected. Two of 3 affected pregnancies were terminated. Disease severity was found to have significant association (p = 0.000145) with changes in decision making, whereas guideline status of diseases, controlled for severity, was not (p = 0.284). Most ARC altered reproductive planning, demonstrating the clinical utility of ECS. Severity of conditions factored into decision making.     

Commodification of Flesh: Data Visualization Techniques and Interest in the Licit Sex Industry

A commonly held assumption in the sex-based industry is interest always exists. However, assuming interest undermines any holistic attempt to study the licit and illicit economies associated with this industry. This research explores Backpage.com and the influence this website has on licit markets associated with prostitution and the illicit activities often associated with the economy. Results suggest Backpage.com does have an influence on two prominent licit markets, strip clubs and massage parlors. Moreover, results of the spatial analysis indicate the presence of “interest corridors” uniquely aligning to known transportation corridors associated with routes for prostitution and human trafficking.     

An investigation of neuronal integrity in severe paediatric traumatic brain injury.

Magnetic Resonance Spectroscopy (MRS) and its association with neuropsychological functioning was examined in the chronic injury phase of paediatric traumatic brain injury (TBI). Fifteen children, aged 10-16 years, with severe TBIs were compared with 15 controls, matched for age and gender. The TBI group was found to have significantly lower levels of -acetyl aspartate (NAA) and Choline (Cho) in the right frontal lobe and generally displayed reduced performances on neuropsychological tests. A correlation between metabolites and reaction times was also obtained. Findings indicate a role of proton MRS as a measure of neuronal integrity following severe paediatric TBI and suggest a potential association of MRS with specific neuropsychological impairments.     

Judging a book by its cover: the unconscious influence of pupil size on consumer choice

Past research suggests that men perceive women with large pupils as especially attractive. We employed an innovative methodology to examine whether this effect influences consumer decision-making. A popular psychology book was published with two slightly different front covers. Both covers contained the same photograph of a woman; however, the woman's pupils on one cover were digitally enlarged. Readers indicated whether they were male or female, and whether they possessed the cover with small or large pupils. A significantly greater percentage of men than women had chosen the cover with the large pupils. None of the participants who attempted to guess the nature of the experiment was correct, suggesting that the influence exerted by pupil size was unconscious. These findings provide further support for the notion that people's judgments are unconsciously swayed by pupil size, and demonstrate that this effect operates in a real world setting.