Lemurs and macaques show similar numerical sensitivity

We investigated the precision of the approximate number system (ANS) in three lemur species (Lemur catta, Eulemur mongoz, and Eulemur macaco flavifrons), one Old World monkey species (Macaca mulatta) and humans (Homo sapiens). In Experiment 1, four individuals of each nonhuman primate species were trained to select the numerically larger of two visual arrays on a touchscreen. We estimated numerical acuity by modeling Weber fractions (w) and found quantitatively equivalent performance among all four nonhuman primate species. In Experiment 2, we tested adult humans in a similar procedure, and they outperformed the four nonhuman species but showed qualitatively similar performance. These results indicate that the ANS is conserved over the primate order.     

From cooperation to conflict: The role of collective narratives in shaping group behaviour

In this paper, we review the concept of collective narratives and their role in shaping group behaviour. We see collective narratives as ‘meta-stories’ embraced by groups that incorporate values and beliefs about social reality, therefore providing a blueprint for group norms which, in turn, inform group members' behaviour. Our aim is to both describe the psychological processes underpinning the relation between collective narratives and group behaviours and develop an integrative typology of the functions of collective narratives (as they connect to various collective behaviours). We start by discussing definitions in the recent literature and propose an integrative conceptualisation which positions collective narratives in the context of collective action research. Next, we focus on the process by which collective narratives provide the bases for identity formation, development, and change, thus shaping group behaviour. We see collective narratives as central in understanding group behaviour, as they function as ‘meta-stories’ that incorporate moral codes and values, and beliefs about the ingroups and outgroups—providing a blueprint for group norms which, in turn, inform group members' behaviour. In the second part of the article, we describe a typology of collective narratives according to their functions, structured around two core dimensions: the context/s in which collective narratives develop and are shared (i.e., intragroup vs. intergroup) and their effects within these contexts (i.e., driving consensus vs. driving dissent). We identify four distinctive types of collective narrative functions and review research showing how each of them shapes specific social identity content, including behaviour prescribing norms. We then show how these specific norms shape behaviours ranging from cooperation and pro-social action to hostile intergroup conflict. The implications of this contribution are twofold. First, by providing a systematic account and categorisation of how collective narratives function in society and of their connections to social identities (and their content), we can more accurately deduct group norms and predict behaviours in specific circumstances, including in relation to political violence. Second, by better understanding the narratives that provide the bases of identity formation, development, and change, we can improve attempts to create alternative narratives that unify rather than divide people, so that pathways to co-operation might be chosen over conflict.     

Emotion Regulation Strategies,Secondary Traumatic Stress,and Compassion Satisfaction in Healthcare Providers

The aim of the present study is to examine the relationships between two emotion regulation strategies (cognitive reappraisal and expressive suppression), secondary traumatic stress, and compassion satisfaction in a sample of 190 healthcare providers. Another aim of this study is to examine if the relations between emotion regulation strategies and traumatic stress symptoms are moderated by compassion satisfaction. The respondents volunteered to take part in the research and completed self-reporting measures describing the use of emotional regulation strategies, the symptoms of secondary traumatic stress, and the compassion satisfaction. The results revealed negative associations between cognitive reappraisal and secondary traumatic stress, while expressive suppression is positively associated with arousal. Moreover, cognitive reappraisal is positively related to compassion satisfaction, while secondary traumatic stress symptoms are negatively correlated with compassion satisfaction. Furthermore, the relationship between expressive suppression and intrusions is moderated by compassion satisfaction. The implications of these results for enhancing professional quality of life in the context of secondary exposure to traumatic life events are discussed.     

Tailoring Gratitude Interventions. How and for Whom Do They Work? The Potential Mediating Role of Reward Processing and the Moderating Role of Childhood Adversity and Trait Gratitude

Outcomes of gratitude interventions are encouraging, but inconsistent across studies. In addition, both mechanisms of change and effect modifiers for these interventions are largely unknown. Recent data point toward potential candidates and suggest reward processing may be a promising mechanism underlying these interventions, while childhood adversity (CA) and trait gratitude may impact on them. However, existing research aimed at investigating these hypotheses is scarce. Building on these, we examined the effectiveness of a gratitude intervention for decreasing depressive symptoms and negative affect and increasing positive affect. We also investigated changes in reward processing following intervention and explored differences in adherence and drop-out between groups. Finally, we investigated the moderating role of CA and trait gratitude.

Participants (N=237, ages between 18–56) were randomly allocated to a gratitude or active control condition (14 days). Following intervention, findings indicated a significant decrease in depressive symptoms and negative affect in both conditions. While positive affect remained stable, a significant time effect emerged for reward processing. CA severity, but not multiplicity, moderated the effectiveness of the intervention, adherence and drop-out. Trait gratitude moderated the effectiveness of the gratitude intervention only on depressive symptoms.

Gratitude interventions may not be the best fit for everyone. Thus, we recommend tailoring interventions, especially in individuals reporting a history of severe CA.

     

Accuracy of Basic Knowledge of Traumatic Historical Events: The Armenian Genocide

This research assumes that accuracy of shared historical knowledge of genocide might help new generations cope with the trauma lived by previous generations, while the longer the denial of a genocide the more fragmented the macronarrative and the longer the collective trauma. The Armenian genocide (1915) is generally represented in opposite ways by the Turks and Armenians. The study explores the knowledge accuracy of the 1915 events before and after the centennial commemoration of the genocide and uses convenience samples from Bulgaria, Czech Republic, Croatia, Romania, United States, Venezuela, and a representative sample (Romania, N = 1231). The major findings suggest a very low basic knowledge of genocide, with a few exceptions, despite a significant increase of this knowledge after the 100-year commemoration.     

States on Hilbert Algebras

In this paper we develop a theory of Bosbach and Rie?an states on non-trivial Hilbert algebras.