The Relationship between Values and Prosocial Behavior in Different Contexts before and during the COVID-19 Pandemic

The COVID-19 pandemic has unprecedentedly influenced social interactions, which can be implemented both in real life (offline) and on the Internet. Prosocial behavior as a type of social interactions has a positive impact on individuals and society, especially during crises. Prosocial behavior is determined by various factors, including individual values and contextual factors as the most influential ones. The form of prosocial behavior and its determinants may differ in different periods of the society functioning. Therefore, studying prosocial behavior before and during the pandemic, and identifying factors of its implementation in various contexts is a relevant task. This study explores the relationship between individual values and prosocial behavior, in an offline and an online context, before and during the COVID-19 pandemic in Russia. A cross-sectional study with two sub-samples — the “pre-pandemic” group (N=304) and the “pandemic” group (N=187) — was conducted online, using the short version of Human Values Scale by S. Schwartz (ESS-21) and scales of prosocial behavior in online and offline contexts. Results show that during a pandemic people are less likely to engage in prosocial behavior offline and rely less on Self-Transсendence values. At the same time, in “the pre-pandemic” group, Self-Transcendence values contribute to prosocial behavior in both contexts, while Self-Enhancement values contribute to prosocial behavior in the online context. Next, in the “pandemic” group, Self-Transcendence values and Openness-to-Change values promote prosocial behavior in both contexts, while Conservation values discourage it. The results are discussed regarding the impact a pandemic has on people's lives.

Need for approval from others and face concerns as predictors of interpersonal conflict outcome in 29 cultural groups

The extent to which culture moderates the effects of need for approval from others on a person's handling of interpersonal conflict was investigated. Students from 24 nations rated how they handled a recent interpersonal conflict, using measures derived from face-negotiation theory. Samples varied in the extent to which they were perceived as characterised by the cultural logics of dignity, honour, or face. It was hypothesised that the emphasis on harmony within face cultures would reduce the relevance of need for approval from others to face-negotiation concerns. Respondents rated their need for approval from others and how much they sought to preserve their own face and the face of the other party during the conflict. Need for approval was associated with concerns for both self-face and other-face. However, as predicted, the association between need for approval from others and concern for self-face was weaker where face logic was prevalent. Favourable conflict outcome was positively related to other-face and negatively related to self-face and to need for approval from others, but there were no significant interactions related to prevailing cultural logics. The results illustrate how particular face-threatening factors can moderate the distinctive face-concerns earlier found to characterise individualistic and collectivistic cultural groups.

Psychological patterns of poverty in Russia: Relationships among socioeconomic conditions, motivation, self-regulation and well-being

This article aims to extend our understanding of the link between socioeconomic conditions and psychological variables. It focuses on the effects of five distinct socioeconomic indicators on a range of psychological variables in samples of 162 individuals living below the poverty line and 188 of their more well-off counterparts in Russia. Participants completed a questionnaire containing measures of socioeconomic indicators (i.e., income, education, perceived deprivation, subjective socioeconomic status, and childhood socioeconomic status) and psychological variables representing self-regulation, motivation, and well-being. Our main findings include: (a) significant effects of socioeconomic status on all psychological variables, which are in line with other studies seeking to answer similar questions, (b) varying importance of different socioeconomic indicators for different psychological variables, and (c) centrality of all socioeconomic indicators except childhood socioeconomic status, and of values of openness to change and self-transcendence, satisfaction with life and self-esteem in the network of relationships between socioeconomic indicators and psychological variables.

Sex Differences in Self-Construal and in Depressive Symptoms: Predictors of Cross-National Variation

Sex differences in aspects of independent versus interdependent self-construal and depressive symptoms were surveyed among 5,320 students from 24 nations. Men were found to perceive themselves as more self-contained whereas women perceived themselves as more connected to others. No significant sex differences were found on two further dimensions of self-construal, or on a measure of depressive symptoms. Multilevel modeling was used to test the ability of a series of predictors derived from a social identity perspective and from evolutionary theory to moderate sex differences. Contrary to most prior studies of personality, sex differences in self-construal were larger in samples from nations scoring lower on the Gender Gap Index, and the Human Development Index. Sex differences were also greater in nations with higher pathogen prevalence, higher self-reported religiosity, and in nations with high reported avoidance of settings with strong norms. The findings are discussed in terms of the interrelatedness of self-construals and the cultural contexts in which they are elicited and the distinctiveness of student samples.

Resolving the fibrotic niche of human liver cirrhosis at single-cell level

Liver cirrhosis is a major cause of death worldwide and is characterized by extensive fibrosis. There are currently no effective antifibrotic therapies available. To obtain a better understanding of the cellular and molecular mechanisms involved in disease pathogenesis and enable the discovery of therapeutic targets, here we profile the transcriptomes of more than 100,000 single human cells, yielding molecular definitions for non-parenchymal cell types that are found in healthy and cirrhotic human liver. We identify a scar-associated TREM2+CD9+ subpopulation of macrophages, which expands in liver fibrosis, differentiates from circulating monocytes and is pro-fibrogenic. We also define ACKR1+ and PLVAP+ endothelial cells that expand in cirrhosis, are topographically restricted to the fibrotic niche and enhance the transmigration of leucocytes. Multi-lineage modelling of ligand and receptor interactions between the scar-associated macrophages, endothelial cells and PDGFRα+ collagen-producing mesenchymal cells reveals intra-scar activity of several pro-fibrogenic pathways including TNFRSF12A, PDGFR and NOTCH signalling. Our work dissects unanticipated aspects of the cellular and molecular basis of human organ fibrosis at a single-cell level, and provides a conceptual framework for the discovery of rational therapeutic targets in liver cirrhosis.

Magnetic and Optical Properties of Gold-Coated Iron Oxide Nanoparticles

In this work, magnetic and optical properties of magnetic nanoparticles were investigated, where the particles of iron oxide were prepared with a co-precipitation route and the component of gold was built up by reduction of AuCl^4- on the surface of iron oxide to assemble nanocomposite structures in the form of an electrostatic stabilized suspension. The size of the particles obtained with TEM increased from of 8.9 ± 2.7 to 16 ± 6 nm after the procedure of hybridisation. In order to distinguish the impact of the gold on the optical properties, UV-Vis and Raman spectroscopy techniques were used. Magnetic properties were studied in the temperature range of 5-300 K and the superparamagnetic state of MNPs at room temperature was confirmed for both systems.

Enzyme-functionalized gold-coated magnetite nanoparticles as novel hybrid nanomaterials: synthesis, purification and control of enzyme function by low-frequency magnetic field

The possibility of remotely inducing a defined effect on NPs by means of electromagnetic radiation appears attractive. From a practical point of view, this effect opens horizons for remote control of drug release systems, as well as modulation of biochemical functions in cells. Gold-coated magnetite nanoparticles are perfect candidates for such application. Herein, we have successfully synthesized core-shell NPs having magnetite cores and gold shells modified with various sulphur containing ligands and developed a new, simple and robust procedure for the purification of the resulting nanoparticles. The carboxylic groups displayed at the surface of the NPs were utilized for NP conjugation with a model enzyme (ChT). In the present study, we report the effect of the low-frequency AC magnetic field on the catalytic activity of the immobilized ChT. We show that the enzyme activity decreases upon exposure of the NPs to the field.