Specific Social Behaviors Research Articles

Dynamic brain networks in spontaneous gestural communication

Gestures accent and illustrate our communication. Although previous studies have uncovered the positive effects of gestures on communication, little is known about the specific cognitive functions of different types of gestures, or the instantaneous multi-brain dynamics. Here we used the fNIRS-based hyperscanning technique to track the brain activity of two communicators, examining regions such as the PFC and rTPJ, which are part of the mirroring and mentalizing systems. When participants collaboratively solved open-ended realistic problems, we characterised the dynamic multi-brain states linked with specific social behaviours. Results demonstrated that gestures are associated with enhanced team performance, and different gestures serve distinct cognitive functions: interactive gestures are accompanied by better team originality and a more efficient inter-brain network, while fluid gestures correlate with individual cognitive fluency and efficient intra-brain states. These findings reveal a close association between social behaviours and multi-brain networks, providing a new way to explore the brain-behaviour relationship.

Prior Negative Experience Biases Activity of Medial Amygdala during Interstrain Social Engagement in Male Rats.

Social recognition is an essential part of social function and often promotes specific social behaviors based on prior experience. Social and defensive behaviors in particular often emerge with prior experiences of familiarity or novelty/stress, respectively. This is also commonly seen in rodents toward same-strain and interstrain conspecifics. Medial amygdala (MeA) activity guides social choice based on age and sex recognition and is sensitive to social experiences. However, little is known about whether the MeA exhibits differential responses based on strain or how this is impacted by experience. Social stress impacts posterior MeA (MeAp) function and can shift measures of social engagement. However, it is unclear how stress impacts MeAp activity and contributes to altered social behavior. The primary goal of this study in adult male Sprague Dawley rats was to determine whether prior stress experience with a different-strain (Long-Evans) rat impacts MeAp responses to same-strain and different-strain conspecifics in parallel with a change in behavior using in vivo fiber photometry. We found that MeAp activity was uniformly activated during social contact with a novel same-strain rat during a three-chamber social preference test following control handling but became biased toward a novel different-strain rat following social stress. Socially stressed rats also showed initially heightened social interaction with novel same-strain rats but showed social avoidance and fragmented social behavior with novel different-strain rats relative to controls. These results indicate that heightened MeAp activity may guide social responses to novel, threatening, rather than non-threatening, social stimuli after stress.

Social and Emotional Functioning of Pediatric Brain Tumor Survivors and Typically Developing Youth Following the Onset of the Pandemic.

Background: Social competence is a domain in which pediatric brain tumour survivors (PBTS) are at risk of challenges. To follow-up on our earlier work, in this study we assessed specific social interaction behaviors and emotional functioning in PBTS relative to typically developing youth (TD). The study coincided with the onset of the global pandemic. Methods: Sixteen PBTS and 16 typically developing youth (TD) between 8-16 years old participated in the study. Youth completed an assessment of social behavior and parents completed online surveys regarding child social and emotional adjustment. Results: PBTS experienced greater impairments in social interaction behaviors and on indices of social adjustment relative to TD. PBTS and TD experienced similar levels of emotional problems. Social behavior challenges were associated with indices of anxiety, rather than depression. Time since pandemic onset was not associated with social emotional outcomes. Conclusions: It will be important to monitor and support the social adjustment of populations such as PBTS, as well as the emotional adjustment across PBTS and TD youth, following the pandemic.

Oxytocin receptor function regulates neural signatures of pair bonding and fidelity in the nucleus accumbens.

The formation of enduring relationships dramatically influences future behavior, promoting affiliation between familiar individuals. How such attachments are encoded to elicit and reinforce specific social behaviors in distinct ethological contexts remains unknown. Signaling via the oxytocin receptor (Oxtr) in the nucleus accumbens (NAc) facilitates social reward as well as pair bond formation between mates in socially monogamous prairie voles 1-9 . How Oxtr function influences activity in the NAc during pair bonding to promote affiliative behavior with partners and rejection of other potential mates has not been determined. Using longitudinal in vivo fiber photometry in wild-type prairie voles and those lacking Oxtr, we demonstrate that Oxtr function sex-specifically regulates pair bonding behaviors and associated activity in the NAc. Oxtr function influences prosocial behavior in females in a state-dependent manner. Females lacking Oxtr demonstrate reduced prosocial behaviors and lower activity in the NAc during initial chemosensory investigation of novel males. Upon pair bonding, affiliative behavior with partners and neural activity in the NAc during these interactions increase, but these changes do not require Oxtr function. Conversely, males lacking Oxtr display increased prosocial investigation of novel females. Using the altered patterns of behavior and activity in the NAc of males lacking Oxtr during their first interactions with a female, we can predict their future preference for a partner or stranger days later. These results demonstrate that Oxtr function sex-specifically influences the early development of pair bonds by modulating prosociality and the neural processing of sensory cues and social interactions with novel individuals, unmasking underlying sex differences in the neural pathways regulating the formation of long-term relationships.

The subjective value of genuine smiles guides real-world social behaviour.

The mechanisms that underpin human social behaviour are poorly understood, in part because natural social behaviour is challenging to study. The task of linking the mechanisms thought to drive social behaviour to specific social behaviours in a manner that maintains ecological validity poses an even greater challenge. Here we report evidence that the subjective value people assign to genuine smiles, as measured in the laboratory, determines their responsiveness to genuine smiles encountered in a naturalistic social interaction. Specifically, participants (university undergraduates; age 17 to 36) who valued genuine smiles to a greater degree also showed stronger attention capture effects to neutral faces that were previously associated with genuine smiles and faster reciprocity of a social partner's smiles in a real social interaction. Additionally, the faster participants responded to the partner's genuine smiles the higher the partner's ratings of interaction quality were after the interaction. These data suggest that individual differences in subjective value of genuine smiles, measured in the lab, is one element that underpins responsiveness to natural genuine smiles and subsequent social outcomes.

Qualitative and asymptotic analysis of repulsion systems with diverse applications

Repulsion systems under the discrete dynamical systems perspective are considered. The goal is to study the nonlinear dynamics of an arrangement of individual or cells under various types of repulsion laws. Repulsion is a natural mechanism, so we consider the following laws: global, open, cyclic and bounded repulsion. A first scenario under consideration is when particles are freely located on an Euclidean space and the second scenario where they are restricted to remain in a bounded set. We consider those two scenarios under the previous types of repulsion. The analysis culminates in a unification of two mechanisms: attraction and repulsion via a specific social behaviour problem.

Hippocampal Pyk2 regulates specific social skills: Implications for schizophrenia

Pyk2 has been shown previously to be involved in several psychological and cognitive alterations related to stress, Huntington's disease, and Alzheimer's disease. All these disorders are accompanied by different types of impairments in sociability, which has recently been linked to improper mitochondrial function. We hypothesize that Pyk2, which regulates mitochondria, could be associated with the regulation of mitochondrial dynamics and social skills. In the present manuscript, we report that a reduction of Pyk2 levels in mouse pyramidal neurons of the hippocampus decreased social dominance and aggressivity. Furthermore, social interactions induced robust Pyk2-dependent hippocampal changes in several oxidative phosphorylation complexes. We also observed that Pyk2 levels were increased in the CA1 pyramidal neurons of schizophrenic subjects, occurring alongside changes in different direct and indirect regulators of mitochondrial function including DISC1 and Grp75. Accordingly, overexpressing Pyk2 in hippocampal CA1 pyramidal cells mimicked some specific schizophrenia-like social behaviors in mice. In summary, our results indicate that Pyk2 might play a role in regulating specific social skills likely via mitochondrial dynamics and that there might be a link between Pyk2 levels in hippocampal neurons and social disturbances in schizophrenia.

Stimulating oxytocin receptors in the basolateral amygdala enhances stimulus processing: Differential and consistent effects for stimuli paired with fear versus sucrose in extinction and reversal learning

Oxytocin (OT) influences a range of social behaviors by enhancing the salience of social cues and regulating the expression of specific social behaviors (e.g., maternal care versus defensive aggression). We previously showed that stimulating OT receptors in the basolateral amygdala of rats also enhanced the salience of fear conditioned stimuli: relative to rats given vehicle infusions, rats infused with [Thr4,Gly7]-oxytocin (TGOT), a selective OT receptor agonist, showed greater discrimination between a cue predictive of danger, and one that signaled safety. In the present series of experiments using male rats, the effects of OT receptor activation in the basolateral amygdala on stimulus processing were examined further using conditioning protocols that consist of changes in stimulus-outcome contingencies (i.e., extinction and reversal), and with stimuli paired with aversive (i.e., foot shock) and appetitive (i.e., sucrose) outcomes. It was revealed that the effects of OTR stimulation diverge for aversive and appetitive learning – enhancing the former but not the latter. However, across both types of learning, OTR stimulation enhanced the detection of conditioned stimuli. Overall, these results are consistent with an emerging view of OT’s effects on stimulus salience; facilitating the detection of meaningful stimuli while reducing responding to those that are irrelevant.

Particularități ale limbajului și comunicării în TSA

Autism spectrum disorders (AST) are a complex and puzzling cluster of disorders in which social isolation, communication difficulties, and the presence of peculiar and/or repetitive behaviors, in various degrees, are the main characteristics. These characteristics are interlinked and share similar brain and cognitive functioning specificity. This paper focuses on communication and language disorders, their particularities in persons with AST, and their impact on differential diagnostic and specific interventions. Efficient therapeutic strategies and techniques for persons with ASD should address these strong correlations and overlaps between the specific social behavior development and the particularities of using language and communication in an ecological paradigm.

Effect of social media usage on major depressive disorder among generation Z: a study in Indian context

PurposeThe purpose of this study is to examine the specific social media behaviours (SMB) that lead to major depressive disorder (MDD). The study also looks at the moderation effect of pandemic on social media usage among users.Design/methodology/approachUsing a descriptive approach, the required data was collected from a sample of 629 social media users chosen through random sampling technique. An adopted structured online questionnaire was used to collect the data. The data collected was analysed by using univariate and multinomial regression techniques.FindingsThe findings of the study revealed that social media intensity, social media addiction (SMA), social media participation, social interaction and SMB had a positive impact on MDD, whereas social comparison had a negative impact. The pandemic situation has also been found to moderate the effect of social media usage on MDD.Social implicationsThis study will be supportive in disclosing behaviours and activities of students that impact their mental health adversely. This will also be helpful in dealing with specific stressors in the programs designed to cope with the depression. By adopting effective strategies to manage social media usage, the study would help to reduce the level of depressive symptoms among college students, significantly promoting healthy environments for students and, thus, contribute to social change.Originality/valueSince the social media has both favourable and detrimental effects, the key for the users is to develop an awareness about the wise usage and to determine the alterations in the usage patterns that can help to reduce the behaviours associated with negative emotions and psychological distress.

Similarities and differences in the functional architecture of mother- infant communication in rhesus macaque and British mother-infant dyads

Similarly to humans, rhesus macaques engage in mother-infant face-to-face interactions. However, no previous studies have described the naturally occurring structure and development of mother-infant interactions in this population and used a comparative-developmental perspective to directly compare them to the ones reported in humans. Here, we investigate the development of infant communication, and maternal responsiveness in the two groups. We video-recorded mother-infant interactions in both groups in naturalistic settings and analysed them with the same micro-analytic coding scheme. Results show that infant social expressiveness and maternal responsiveness are similarly structured in humans and macaques. Both human and macaque mothers use specific mirroring responses to specific infant social behaviours (modified mirroring to communicative signals, enriched mirroring to affiliative gestures). However, important differences were identified in the development of infant social expressiveness, and in forms of maternal responsiveness, with vocal responses and marking behaviours being predominantly human. Results indicate a common functional architecture of mother-infant communication in humans and monkeys, and contribute to theories concerning the evolution of specific traits of human behaviour.

Responding to threatening online alternatives: Perceiving the partner’s commitment through their social media behaviors

Two studies examined how committed people perceived their partners’ social media behaviors and how the presence of these behaviors impacted feelings of relationship security and satisfaction. Study 1 identified the specific social media behaviors that signal commitment by a romantic partner. Study 2 then manipulated the identified partner social media behaviors to examine if buffering occurred for people with high levels of attachment insecurity. Study 2 found that when a person was led to believe their partner engaged in high commitment online behaviors, they reported greater felt relationship security and relationship satisfaction. Attachment avoidance, but not attachment anxiety, moderated the manipulation’s effect on relationship satisfaction. Perceiving that a partner signals high commitment when the threat of online alternatives is salient may be one specific route to mitigate attachment avoidance’s impact on relationship satisfaction.

Psychological characteristics of entrepreneurs working in stress-related conditions

The relevance of the study is due to the growth of stress-related conditions of entrepreneurs’ activity in Ukraine in 2020-2023. The purpose of the study is to highlight the results of an examination of emotional intelligence, psychosocial stress, and character accentuations of entrepreneurs working in stress-related conditions. Among the key research methods is the psychosocial stress scale of L. Reeder, emotional intelligence test questionnaire of N. Hall, definition of character accentuations of Leonhard – H. Schmieschek. The professional activities of 90 entrepreneurs in the conditions of COVID-19 and 90 entrepreneurs in the conditions of war in the period 2021-2023 were examined. In both groups, the established high level of emotional intelligence was characterised by the ability to be aware of emotions and feelings, the average – by the potential for development, and the low required development. A strong correlation was identified between “emotional awareness” and “recognition of other people’s emotions”, which characterised restraint in the manifestation of emotions. Entrepreneurs working in war conditions were identified to have a reduced ability to manage emotions and low self-motivation. It was identified that psychosocial stress was manifested by psychosomatic complaints and impulsive decisions, aggressiveness, intolerance to the opinions of others, and anger. A high level of stress was accompanied by a deterioration in concentration, memory, and performance. It is proved that the tendency to accentuation due to provocative emotional factors increased to accentuation, and pedantry, hyperthymicity, emotionality create the basis for conflicts. It was determined that the pathogenetic path of conflict development was evasion as a specific social behaviour in stress-associated conditions of activity, and ignoring the problem was the basic behaviour in conflict with the desire to avoid acute situations and decisions ‒ “tactics of presence without signs of active intervention”. Two types of accentuations associated with the negative impact on the emotional intelligence of businessmen were identified: getting stuck or dysthymia in the first group, which worked during COVID-19, and the dominance of anxious and emotional traits in the second group, members of which had to work in war conditions. It is noted that in both groups, entrepreneurial activity was characterised as “rather dysfunctional and unsatisfactory”. The practical importance of the study lies in the ability to consider the identified psychological characteristics in providing assistance to entrepreneurs working in stress-related conditions.

Mite non-reproduction, recapping behavior, and hygienic behavior (freeze-kill method) linked to Varroa destructor infestation levels in selected Apis mellifera colonies.

The genetic selection of honey bees (Apis mellifera) possessing specific social hygienic behaviors offers the beekeeping industry the possibility of controlling the Varroa destructor parasite and thus reducing its dependence on acaricides. However, the links between these behavioral traits are not yet well defined, which limits genetic progress in breeding programs. We measured the following behavioral varroa resistance traits: freeze-kill brood (FKB) and pin-kill brood (PKB) assays, varroa-sensitive hygiene (VSH), pupae removal, mite non-reproduction (MNR), and recapping activity. We found 2 negative and significant relationships: 1) between the recapping of cells infested with varroa and the total number of recapped cells, and 2) between the recapping of cells infested with varroa and VSH. We also selected the best predictive model of varroa infestation levels using the "step-wise" approach based on the Akaike information criterion. Our model revealed that MNR and FKB were significantly related to the varroa population levels, with a negative relationship; recapping was significantly related to mite infestation levels, with a positive relationship. Thus, a higher MNR or FKB score was linked to lower levels of mite infestation in colonies on August 14 (prior to fall infestation treatments); a higher recapping activity was linked to a higher level of mite infestation. Recapping behavior could be a useful trait to aid the selection of varroa-resistant bee lineages.

Emotional and experiential factors that determine civilizational diseases

BackgroundThe effects of adverse childhood experiences may persist in adult life and manifest themselves in various areas of function-ing. The aim of the study was to identify the emotional and experiential factors that determine civilizational diseases and the methods of regulating emotions and functioning in society.Participants and procedureThe surveyed group was composed of 141 adults. The respondents defined the existence of adverse experiences and their attachment styles in retrospective. The methods of regulating emotions were also measured, as well as the presence of civilizational diseases.ResultsThe authors found a correlation between the style of attachment and the traumatic events experienced during the first 18 years of life and the existence of civilizational diseases. Adverse experiences in childhood and attachment styles proved to be predictors of specific social behaviour aimed at regulating emotions.ConclusionsThe results emphasised the importance of the bond with a parent and of traumatic childhood experiences for the future health condition and for the social and emotional functioning. The study demonstrated that persons who experienced traumatic events in their families or in the peer environment in the first 18 years of their lives reported the presence of civilizational diseases. A correlation was found between peer violence, the threat of being abandoned by a caregiver, and diagnosed civilizational diseases in respondents. The fearful-ambivalent style in the relationship with the father proved to be a predictor of reported civilizational diseases. Adverse childhood experiences are linked to regulating emotions by tak-ing perspective. The attachment style developed in the relationship with parents determined the ways of regulating nega-tive and positive emotions in contact with other people. Persons who developed an avoidant attachment style in the rela-tionships with the mother or the father less frequently seek social support when they experience negative emotions.

КОНФЛИКТЫ МЕЖДУ ВОЕННОСЛУЖАЩИМИ ПОДРАЗДЕЛЕНИЙ РУССКОЙ РЕГУЛЯРНОЙ АРМИИ В СИБИРИ XVIII ВЕКА (ПО МАТЕРИАЛАМ СУДЕБНО-СЛЕДСТВЕННЫХ ДЕЛ)

The paper analyzes conflicts that arose between servicemen in the units of the Russian army in Siberia during the middle and 2nd half of the 18th century. This particular aspect for the historical period under research still remains without any attention both in historical studies and in modern military conflict studies. The author set the goal of finding out, whether people of unprivileged origin, who were serving in the ranks of the regular army, have had some features of moods and behavior. These features, according to Boris Mironov and Pavel Shcherbinin, make it possible to refer such people to the “military estate” as a special group or even an institution in the social structure of the Russian Empire in the 18th century. Archival materials, such as several judicial and investigative cases, containing documents of military court proceedings of crimes (including murders) and the sentences passed on them, were used to solve this problem. In particular, the cases of the murder of a soldier by a dragoon, the murder of an officer by a soldier, as well as insults in a drunken state by an officer to a higher commander are studied. The analysis of these judicial and investigative cases leads to the conclusion that Mironov and Shcherbinin’s point of view can not be confirmed. It is hardly possible to say that the servicemen of the Russian regular army in the 18th century, who did not belong to the nobility by origin, constituted the “military estate” as a special group or even an institution, having their own specific interests, moods and social behavior. Conflicts in the army units stationed in Siberia rather suggest that the same conflicts and antagonisms inevitably arose in the armed forces of the empire as among the civilian population.

A Design and Framework for Measuring Social Media Cyberbullying: Based on Text Sentiment Analysis

Cyberbullying is a focal issue of public concern. This study focuses on cyberbullying and innovatively introduces text sentiment analysis techniques into the research of specific social behaviors. Through this technique, a research framework for a cyberbullying scale in social media will be designed to explore the dissemination mechanisms and characteristics of cyberbullying in Chinese social media, and to develop a cyberbullying scale that is in line with the cultural background and characteristics of Chinesespeaking countries.

Hostile, Benevolent, Implicit: How Different Shades of Sexism Impact Gendered Policy Attitudes

Advances in gender equality and progressive policies are often stymied by cultural sexist systems and individual-level sexist attitudes. These attitudes are pervasive but vary in type—from benevolent to hostile and implicit to explicit. Understanding the types of sexism and their foundations are important for identifying connections to specific social and political attitudes and behaviors. The current study examines the impact of various manifestations of sexism on attitudes regarding policies and public opinion issues that involve gender equality or have gendered implications. More specifically, we look at attitudes on reproductive rights, support for the #MeToo Movement, equal pay, and paid leave policies. In Study 1 we use data from a high-quality web panel (n = 1,400) to look at the relationship between hostile, benevolent, and implicit sexism, and reproductive rights attitudes, as well as support for the #MeToo Movement. In Study 2 we use data from the American National Election Study (n = 4,270) to examine the relationship between hostile and modern sexism and attitudes on abortion, equal pay, and paid family leave. Overall, these results reveal a complicated relationship between different conceptualizations of sexism and gendered attitudes, underscoring the need to consider how different forms of sexism shape broader social and political views, from both a normative perspective for societal change and a measurement approach for research precision.

Alpha-melanocyte-stimulating hormone (αMSH) modulates the rewarding properties of social interactions in an oxytocin receptor-dependent manner in Syrian hamsters (Mesocricetus Auratus)

A reduction in the rewarding properties of social interactions is frequently a key contributor to neuropsychiatric disorders. Although much remains to be learned about the neural mechanisms governing social reward, numerous studies have found that oxytocin can enhance the salience of rewarding social interactions. As a result, oxytocin has been suggested as a pharmacotherapy for disorders characterized by a dampening of social motivation. However, exogenous oxytocin does not cross the blood-brain barrier effectively, which has led to the investigation of alternative approaches to induce central oxytocin release, such as pharmaceuticals targeting melanocortins. Although oxytocin treatment is widely viewed to increase social reward, there is also recent evidence that high concentrations of oxytocin can decrease social reward. In the present study we tested the hypothesis that alpha-melanocyte-stimulating hormone (αMSH) influences the rewarding properties of social interactions by acting on oxytocin receptors. Male and female Syrian hamsters were given intracerebroventricular infusions of saline, αMSH, or a cocktail containing αMSH and an oxytocin receptor antagonist during social conditioning with a same-sex hamster and then tested for a conditioned place preference. αMSH decreased preference for the socially-paired chamber compared to saline treatment, and administration of the oxytocin antagonist concurrent with αMSH administration returned subjects’ preference to control levels. Importantly, αMSH treatments did not affect any measures of body composition or the specific social behaviors displayed during conditioning. These data suggest that melanocortin-targeting drugs should be administered carefully to avoid the possibility of decreasing the rewarding properties of social interactions.

Integrin \u03b23 in forebrain Emx1-expressing cells regulates repetitive self-grooming and sociability in mice

BackgroundAutism spectrum disorder (ASD) is characterized by repetitive behaviors, deficits in communication, and overall impaired social interaction. Of all the integrin subunit mutations, mutations in integrin β3 (Itgb3) may be the most closely associated with ASD. Integrin β3 is required for normal structural plasticity of dendrites and synapses specifically in excitatory cortical and hippocampal circuitry. However, the behavioral consequences of Itgb3 function in the forebrain have not been assessed. We tested the hypothesis that behaviors that are typically abnormal in ASD—such as self-grooming and sociability behaviors—are disrupted with conditional Itgb3 loss of function in forebrain circuitry in male and female mice.MethodsWe generated male and female conditional knockouts (cKO) and conditional heterozygotes (cHET) of Itgb3 in excitatory neurons and glia that were derived from Emx1-expressing forebrain cells during development. We used several different assays to determine whether male and female cKO and cHET mice have repetitive self-grooming behaviors, anxiety-like behaviors, abnormal locomotion, compulsive-like behaviors, or abnormal social behaviors, when compared to male and female wildtype (WT) mice.ResultsOur findings indicate that only self-grooming and sociability are altered in cKO, but not cHET or WT mice, suggesting that Itgb3 is specifically required in forebrain Emx1-expressing cells for normal repetitive self-grooming and social behaviors. Furthermore, in cKO (but not cHET or WT), we observed an interaction effect for sex and self-grooming environment and an interaction effect for sex and sociability test chamber.LimitationsWhile this study demonstrated a role for forebrain Itgb3 in specific repetitive and social behaviors, it was unable to determine whether forebrain Itgb3 is required for a preference for social novelty, whether cHET are haploinsufficient with respect to repetitive self-grooming and social behaviors, or the nature of the interaction effect for sex and environment/chamber in affected behaviors of cKO.ConclusionsTogether, these findings strengthen the idea that Itgb3 has a specific role in shaping forebrain circuitry that is relevant to endophenotypes of autism spectrum disorder.