The role of the nucleus accumbens in knowing when to respond

While knowing what to expect is important, it is equally important to know when to expect it and to respond accordingly. This is apparent even in simple Pavlovian training situations in which animals learn to respond more strongly closer to reward delivery. Here we report that the nucleus accumbens core, an area well-positioned to represent information about the timing of impending rewards, plays a critical role in this timing function.     

Meerkats (<Emphasis Type="Italic">Suricata suricatta</Emphasis>) fail to prosocially donate food in an experimental set-up

Although humans are usually believed to be prosocial, the evolutionary origins of prosociality are largely debated. One hypothesis is that cooperative breeding has been one major precursor to the emergence of prosociality. In vertebrates, however, experimental evidence of prosociality has been mainly gathered in non-human primates. In this study, we tested the cooperative breeding hypothesis in cooperative breeding meerkats (Suricata suricatta). In particular, we tested whether meerkats take into account partners’ benefits when distributing food rewards. Nine individuals were presented with two platforms baited with different food distributions (providing food to themselves, to a partner or both). In all conditions, the decision to operate the apparatus was based on the presence of food on the subject’s side, and not on the possible benefits to partners. Despite being cooperative breeders, meerkats in this study failed to be prosocial, suggesting that prosociality in this species may be limited to specific contexts.     

An Examination of Concurrent and Incremental Validity of Four Mindfulness Scales

General consensus among psychologists supports the beneficial effects of mindfulness in the treatment of a wide range of clinical conditions such as personality, mood, and anxiety disorders. Several scales used to assess this psychological construct, mainly rooted in Eastern traditions, are currently available to researchers and clinicians. However, the conceptualization and measurement of mindfulness has been considerably diverse. The present study examines the concurrent and incremental validity of four scales: the Philadelphia Mindfulness Scale (PHLMS), the Toronto Mindfulness Scale (TMS), the Five-Facet Mindfulness Questionnaire (FFMQ), and the Langer Mindfulness Scale (LMS). Two independent samples of 176 adults and 397 students, respectively, were recruited. With few exceptions, results were consistent across the two samples and indicated that measures based on an Eastern conceptualization of mindfulness (TMS, PHLMS, and FFMQ) show a different pattern of association with the chosen outcomes compared to the LMS, which is based on a Western conceptualization. Overall, the PHLMS showed the strongest predictive effects and the LMS the weakest in terms of both number of predicted criteria and average effect size. Implications for research and practice are discussed.     

Depression,Positive and Negative Affect,Optimism and Health-Related Quality of Life in Recently Diagnosed Multiple Sclerosis Patients: The Role of Identity,Sense of Coherence,and Self-efficacy

The study aimed to describe the levels of depression, positive and negative affect, optimism and health-related quality of life (HRQOL) in a group of recently diagnosed multiple sclerosis (MS) patients (up to 3 years since the diagnosis), taking into account gender, age, and disease duration differences, and to investigate the possible role of identity, sense of coherence (SOC), and self-efficacy in MS (SEMS) on patients’ depression, positive and negative affect, optimism, and HRQOL. The cross-sectional study involved 90 MS patients (61% women; age: M = 37, SD = 12) with an Expanded Disability Status Scale score between 1 and 4 (mild to moderate disability). Patients completed measures of depression (CESD-10), positive and negative affect (PANAS), optimism (LOT-R), HRQOL (SF-12), identity motives, SOC, and SEMS. Depression scores were near the cut-off level for clinically significant depressive symptoms, and negative affect was higher and HRQOL was lower than those in the general population. Women and younger patients reported better adjustment as time passes since the diagnosis. Results of multiple regressions indicated that higher SOC was related to higher mental health, lower negative affect and lower depression. Higher SEMS was predictive of greater positive affect and lower negative affect, whereas higher identity satisfaction was predictive of higher positive affect and optimism and lower depression. The results suggest the usefulness of addressing identity redefinition, SOC and self-efficacy in psychological interventions aimed at promoting patients’ adjustment to MS.     

Normalization of Racism and Moral Responsibility: Against the Exculpatory Stance

In this article, we take the case of racism in contemporary Italy as a starting point for a discussion about moral responsibility for racism in cases where ignorance is involved. We focus on the issue of the normalization of racism and its contribution to different forms of ignorance to assess the extent to which these might potentially mitigate judgments of responsibility for racism, thereby grounding an Exculpatory Stance. After illustrating the phenomenon of the normalization of racism and offering an outline of how the normalization of racism contributes to ignorance, we argue against the Exculpatory Stance by appealing to a socially situated variety of capacitarian approach to the epistemic condition of moral responsibility. This approach provides us with the tools to claim that the moral ignorance favored by the normalization of racism does not mitigate judgments of individual responsibility. Finally, we point out that the interdependence of individual responsibility and the social environment is such that, in addition to backward-looking individual responsibilities for racism, there are also forward-looking, both individual and shared, responsibilities to counter racism in its various manifestations and the increased risk of moral ignorance connected to its normalization.     

Preserved and impaired task-switching abilities in non-demented patients with Parkinson's disease

Existing studies on task switching in Parkinson's disease (PD) patients have led to somewhat different results. In particular, it is unclear whether PD patients have a deficit in attentional control. In this study, we assessed task-switching abilities in samples of non-demented PD patients and elderly controls. We used a paradigm in which there was a random task sequence and the task was cued in every trial. This allowed the investigation of both task-set reconfiguration and task-set dissipation. In terms of the proportion of errors made, the patients showed increased switch cost and congruency effects. For reaction times, PD patients showed enlarged congruency effects on switch trials, specifically in the condition in which we used a short constant response-cue interval (RCI). Nevertheless, in a similar fashion to older controls, the patients showed reductions in reaction time switch cost from a short to a long cue-target interval (CTI) and from a short to a long RCI. While these latter findings, respectively, suggest unimpaired task preparation and task dissipation on correct trials in the PD patients, the overall results show that they have a deficit in biasing and selecting currently relevant task sets and more generally argue in favour of a failure of attentional control in PD.     

Parental Mediation of COVID-19 News and Children’s Emotion Regulation during Lockdown

Journal of Child and Family Studies - The COVID-19 outbreak resulted in a large amount of emotionally charged messaging that is believed to have a tremendous psychological impact, particularly on...