Unfamiliar Individuals Research Articles

Abstract 4135780: Predictors of Engagement in a Coaching Intervention for Heart Failure Caregivers

Background: Even the best intervention will not be effective without engagement in the experience. We developed and tested a virtual health coaching intervention ("ViCCY”, Virtual Caregiver Coach for You) for informal caregivers of patients with HF in a RCT. Of the 125 caregivers in the intervention group, completion rates varied (mean 6 ± 4 sessions, median 9; 21% no sessions). The aim of this study was to identify factors associated with intervention engagement defined as receipt of ≥8 of 10 intervention sessions over a 6-month period based on core intervention content. Methods: This explanatory sequential mixed methods study was conducted in two phases. First quantitative data were analyzed with respect to number of completed sessions, sociodemographics, and the Credibility-Expectancy Questionnaire measuring expectations regarding intervention effectiveness. We used multivariable logistic regression to quantitatively identify salient predictors of caregivers’ intervention engagement. Then, based on the number of sessions completed, 24 caregivers assigned to ViCCY were interviewed to explore individual, family, community, and societal factors associated with intervention engagement. Transcribed interviews were coded using content analysis. Results: Each one hour increase in hours caregiving was associated with reduced odds of completing ≥8 sessions. Race other than White and income insufficient to make ends meet were associated with reduced odds of completing ≥8 sessions. Each unit increase in intervention credibility was associated with increased odds of completing ≥8 sessions. Interviews with participants who completed some sessions revealed common challenges such as the patient’s HF progression and life events including caregiver health issues, balancing multiple responsibilities, and interpersonal issues. Reluctance to accept help from an unfamiliar individual through a virtual network and perceiving additional resources as burdensome also hindered participation. Practical issues such as finding a suitable space for virtual meetings and scheduling conflicts interfered. In those who did not complete any sessions, the main reason for non-engagement was misunderstanding of what to expect in the intervention. Conclusions: The daily lives of HF caregivers are influenced by caregiving demands exacerbated by social determinants of health. These issues may reduce the capacity of caregivers to accept help and ultimately act as a barrier to program engagement.

Self-awareness from whole-body movements.

Humans can recognize their whole-body movements even when displayed as dynamic dot patterns. The sparse depiction of whole-body movements, coupled with a lack of visual experience watching ourselves in the world, has long implicated non-visual mechanisms to self-action recognition. We aimed to identify the neural systems for this ability. Using general linear modeling and multivariate analyses on human brain imaging data from male and female participants, we first found that cortical areas linked to motor processes, including frontoparietal and primary somatomotor cortices, exhibit greater engagement and functional connectivity when recognizing self-generated versus other-generated actions. Next, we show that these regions encode self-identity based on motor familiarity, even after regressing out idiosyncratic visual cues using multiple regression representational similarity analysis. Last, we found the reverse pattern for unfamiliar individuals: encoding localized to occipito-temporal visual regions. These findings suggest that self-awareness from actions emerges from the interplay of motor and visual processes.Significance Statement: We report for the first time that self-recognition from visual observation of our whole-body actions implicates brain regions associated with motor processes. On functional neuroimaging data, we found greater activity and unique representational patterns in brain areas and networks linked to motor processes when viewing our own actions relative to viewing the actions of others. These findings introduce an important role of motor mechanisms in distinguishing the self from others.

Long-term effect of inbreeding in the yellow steppe lemming, Eolagurus luteus, captive colony

Abstract In the current research, we investigated the impact of gradually increasing inbreeding on the life span and reproductive rate of yellow steppe lemmings, Eolagurus luteus, that reproduced in the Moscow Zoo. The focal captive colony existed from 2017 to 2021. The studied animals belonged to the second to tenth generations. The founders of the colony were 5 females and 5 males originating from 3 females and 4 males livetrapped in the Zaisan basin (Kazakhstan). The degree of their descendant relatedness progressively increased. The animals intended to be used for reproduction were distributed to pairs with unfamiliar partners. We constructed the pedigree of 177 individuals and calculated their inbreeding coefficients. This parameter varied from 0 to 0.29, and the maximum values were registered in the lemmings of the seventh to tenth generations. We measured the life span of 61 individuals and used information about the reproduction or its absence in 45 pairs. A substantial decline in individual life span and reproductive parameters in the breeding pairs, along with a progressive increase in the inbreeding coefficients, was registered. The number of delivered litters, born pups, and young lived up to the age of puberty significantly depended on the level of mother inbreeding. The noticeable traits of inbreeding depression in the colony appeared in 2019–2020 when the offspring inbreeding coefficients reached approximately 0.2. Therefore, we assume that if the E. luteus population originates from a relatively small number of noninbred and unfamiliar individuals, then successful reproduction without significant inbreeding depression will continue for several generations of offspring.

Behavioral Transition Path and Pivotal Nodes Regulating Attack in Initial Encounters between Unfamiliar Pigs.

This study leverages the inherent curiosity of pigs and their competitive nature among conspecifics to explore behavioral transition paths and critical nodes that govern aggression during initial encounters between unfamiliar individuals. Two consecutive experiments were designed to investigate these dynamics under controlled conditions. In Experiment 1, unfamiliar pigs engaged in one-on-one fights with quick retreats, displaying a simple behavioral sequence of looking followed by attacking. In Experiment 2, the addition of new pigs to resident groups resulted in a more complex and structured behavioral sequence. Resident pigs exhibited a 'four-step' exploratory behavior pattern: looking, sniffing, touching, and attacking. Further analysis revealed distinct exploratory pathways. In Experiment 1, only short behavioral paths were observed, while Experiment 2 revealed both long and short paths. Specifically, Experiment 2 uncovered seven types of behavioral transition paths, four of which were long and three short, highlighting different combinations of the basic behaviors. The transition paths involving aggression were more varied in Experiment 2 compared to Experiment 1. Overall, the 15 most frequent and obvious behavioral transition paths were identified across both experiments. Eight types of paths were categorized based on the transitions between the basic behaviors. These findings enhance our understanding of the behavioral dynamics in unfamiliar pig encounters, emphasizing the complexity of social interactions and the conditions under which aggression occurs.

Cognitive impacts of group dynamics: exploring memory errors in observing actions by familiar and unfamiliar individuals

Cognitive impacts of group dynamics: exploring memory errors in observing actions by familiar and unfamiliar individuals

Network social dynamics of an ex-situ colony of African penguins following the introduction of unknown conspecifics

Zoos often alter social groups by moving individuals between collections to control numbers, maintain optimal genetic diversity, and for husbandry and management purposes. However, the impact of introducing new individuals into an existing social group is overlooked, and the consequences of these stressful events from an animal welfare perspective are underestimated. In this study, we use Social Network Analysis (SNA) to monitor and to investigate how the social dynamics of a colony of African penguins (Spheniscus demersus, n = 19) were affected by the introduction of groups of unfamiliar individuals (n = 6 and then n = 10) at different time intervals. The proximity data collected over a period of four months suggest that penguins established a non-random association and developed a significant level of preferred associations within the colony. Breeding pairs had a high degree of interaction with the rest of the colony, and their level of association was stable even when a new group was introduced. We found that the association preferences observed in the colony after introduction were not driven by sex and reproductive age. Instead, the main driver of association was the time of introduction, with individuals introduced at the same time being more likely to interact than those introduced at different times. We also speculate that, in addition to arrival time, familiarity plays a key role in group integration. In our specific case, the introduced penguins were already familiar with each other, having shared the same colony before arriving at the new one. Although the results are based on a case study and require further validation, they support the importance of maintaining relevant social ties within colonies and of relocating a few selected individuals who share prior familiarity to facilitate integration into a new colony. Our findings highlight the usefulness of implementing SNA to evaluate the impact of stressful events on the lives of animals.

Familiarity Is Key: Exploring the Effect of Familiarity on the Face-Voice Correlation.

Recent research has examined the extent to which face and voice processing are associated by virtue of the fact that both tap into a common person perception system. However, existing findings do not yet fully clarify the role of familiarity in this association. Given this, two experiments are presented that examine face-voice correlations for unfamiliar stimuli (Experiment 1) and for familiar stimuli (Experiment 2). With care being taken to use tasks that avoid floor and ceiling effects and that use realistic speech-based voice clips, the results suggested a significant positive but small-sized correlation between face and voice processing when recognizing unfamiliar individuals. In contrast, the correlation when matching familiar individuals was significant and positive, but much larger. The results supported the existing literature suggesting that face and voice processing are aligned as constituents of an overarching person perception system. However, the difference in magnitude of their association here reinforced the view that familiar and unfamiliar stimuli are processed in different ways. This likely reflects the importance of a pre-existing mental representation and cross-talk within the neural architectures when processing familiar faces and voices, and yet the reliance on more superficial stimulus-based and modality-specific analysis when processing unfamiliar faces and voices.

Endogenous Opioids and Volunteering: On the Evolutionary Significance of Helping Others.

The human tendency to help others in need has been subject to trans-, inter-, and multidisciplinary studies (e.g., anthropology, neurobiology, evolutionary psychology, economy), within the frame of studying the mechanisms and adaptive significance of human prosocial behavior. Volunteering directed to unrelated and unfamiliar individuals is one common form of such helping behavior. Helping others may be adaptive for a species at a macro-level, which in turn is mediated by neurobiological mechanisms. A key target for analysis of the neurobiological underpinnings of volunteering is the endogenous opioid system (EOS). This chapter discusses EOS activity as a potential mediator of volunteering behavior. Evidence of the congruence between EOS involvement in social group behavior and social bonding and the role of these phenomena in volunteerism is reviewed. Models and empirical evidence of the mechanisms and adaptive value of helping unrelated others are discussed and integrated, including the mammalian caregiving system, the neurobiological model of prosocial behavior, synchrony promoting social bonding, and stress-driven motivation of prosocial action in immediate needs.

Parent’s Perspective about Intelligibility of Speech in Children with Cerebral Palsy

Background: The term cerebral palsy (CP) refers to a collection of long-term abnormalities of posture and movement development that limit an individual's activities. These abnormalities are thought to be caused by non-progressive disruptions in the growing fetal or infant brain. Aim: To identify the speech Intelligibility of children with cerebral palsy with different communicative partners Methods: This study employed convenient sampling over two months, conducted within the Pakistan Society for the Rehabilitation of the Disabled (PSRD) and Rising Sun Institute for Special Children. Data collection involved the ICS questionnaire, capturing parents' ratings on their child's speech intelligibility in various social contexts. Results: Out of 119 participants, predominantly aged 4 to 12 years, the study revealed varying levels of speech intelligibility. Scores on the Intelligibility in Context Scale (ICS). Parents exhibited a high level of understanding, with a mean score of 4.32±0.96 SD, signifying a substantial level of intelligibility. Immediate family members, extended family members, and the child's teachers also demonstrated relatively high mean scores, ranging from 3.91 to 3.87. In contrast, strangers had a markedly lower mean score of 2.94±1.49 SD, indicating heightened challenges in comprehending the speech of children with cerebral palsy. Conclusion: The speech of children with cerebral palsy is most easily understood by parents, while strangers encounter more significant challenges. This reinforces the crucial role of familiarity in shaping speech intelligibility for these children. The observed difficulties in communication with unfamiliar individuals emphasize the need for targeted interventions and support to address the unique challenges faced by children with cerebral palsy in diverse social contexts. Keywords: Cerebral Palsy, Speech Intelligibility, Parental Perspective, Intelligibility in Context Scale (ICS)

Animal Welfare Concerns of Farm-Based Education Programs

Abstract The integrating of farm animals with educational and therapeutic settings continues to expand, with Farm-animal-assisted interventions (AAI) being a method specifically designed to assist individuals, particularly children, who are dealing with trauma, depression, anxiety, and addiction. Farm-based education includes standards-based curriculum such as agriculture, biology, ecology, nutrition, and science. AAI and education sessions may occur on-site (farm) or off-site (school, hospital, or residential treatment facility). This study delves into the benefits that farm-based activities can bring to children, while shedding light on the potential welfare implications for the animals involved. Research supports that individuals of diverse ages and capabilities may experience positive outcomes from engaging in repetitive, structured interventions with farm animals. What remains unclear is the impact of these interventions on the well-being of the farm animals themselves. Understanding and prioritizing animal welfare is of paramount importance when considering farm-based AAI. If we define welfare as how well an animal copes with its living conditions, we must ensure that animals are healthy, comfortable, well-nourished, safe and can express innate behavior, and are free from pain, fear, frustration, and distress. Another key area of animal welfare is how an animal responds to stress, which may occur when an animal is removed from its environment and required to interact with novel objects or unfamiliar individuals. Information © The Author 2023

Racism is not about “race”

Unfamiliar individuals are viewed with suspicion across the entire animal kingdom. This makes evolutionary sense, as outsiders may carry unfamiliar pathogens against which one has not yet developed immune defenses. In humans, the unfamiliar-pathogens idea has been dismissed on the grounds that people do not shun microbe-sharing contact with ethnic outgroups (other “races”) more than they do with ingroups. Reanalyzing the same public data on which such claims are based—6500 participants from China, India, USA, and UK—here I show that (1) people do behave as though the parasites of unfamiliar individuals were more dangerous, and (2) strangers’ ethnicity matters when, and only when, it is a proxy for unfamiliarity. This implies that racism could be tamed by acquainting our children with fellow humans of all shapes and colors, so that everyone in the world looks like family.

The Shitposting of Jazz to Come: Virtual Communities, Internetworks, and the Dank Jazz Meme

ABSTRACT This article is a virtual ethnography of an online community of jazz fans and musicians that engage in the consumption and dissemination of internet memes about jazz. It argues that internet memes are not, or are not merely, trivial funny images shared online – that memes matter in the social study of jazz. I explore the position of memes in the contemporary jazz milieu, finding them to play an active role in a variety of community functions including evaluating authenticity, enculturating members, and interacting with familiar and unfamiliar individuals on- and offline. They are a window into the discursive practices of jazz communities, a credible pathway of jazz pedagogy, and possess genuine artistic credentials, bringing them within the remit of jazz practice itself. Jazz memes are what I call internetworks, an ontological and aesthetic term that projects them into the future of jazz and positions them firmly within its social gestalt. For ordinary jazz enthusiasts, memeing is a meaningful activity.

Asian elephants distinguish sexual status and identity of unfamiliar elephants using urinary odours.

Despite the ubiquity of odours in mammals, few studies have documented the natural olfactory abilities of many 'non-model' species such as the Asian elephant. As Asian elephants are endangered, we may apply odours to more effectively manage threatened populations. We implemented a habituation-discrimination paradigm for the first time in Asian elephants to test the ability of elephants to discriminate between unfamiliar male elephant urine, hypothesizing that elephants would successfully distinguish non-musth from musth urine and also distinguish identity between two closely related individuals. We conducted two bioassay series, exposing three female and three male zoo-housed elephants to the same urine sample (non-musth urine in the first series, and urine from an unfamiliar individual in the second) over 5 days. On the sixth day, we simultaneously presented each elephant with a novel sample (either musth urine or urine from a second unfamiliar individual) alongside the habituated urine sample, comparing rates of chemosensory response to each sample to indicate discrimination. All elephants successfully discriminated non-musth from musth urine, and also urine from two unfamiliar half-brothers. Our results further demonstrate the remarkable olfactory abilities of elephants with promising implications for conservation and management.

Comparative analysis of gonadal hormone receptor expression in the postnatal house mouse, meadow vole, and prairie vole brain

The socially monogamous prairie vole (Microtus ochrogaster) and promiscuous meadow vole (Microtus pennsylvanicus) are closely related, but only prairie voles display long-lasting pair bonds, biparental care, and selective aggression towards unfamiliar individuals after pair bonding. These social behaviors in mammals are largely mediated by steroid hormone signaling in the social behavior network (SBN) of the brain. Hormone receptors are reproducible markers of sex differences that can provide more information than anatomy alone and can even be at odds with anatomical dimorphisms. We reasoned that behaviors associated with social monogamy in prairie voles may emerge in part from unique expression patterns of steroid hormone receptors in this species, and that these expression patterns would be more similar across males and females in prairie than in meadow voles or the laboratory mouse. To obtain insight into steroid hormone signaling in the developing prairie vole brain, we assessed expression of estrogen receptor alpha (Esr1), estrogen receptor beta (Esr2), and androgen receptor (Ar) within the SBN, using in situ hybridization at postnatal day 14 in mice, meadow, and prairie voles. We found species-specific patterns of hormone receptor expression in the hippocampus and ventromedial hypothalamus, as well as species differences in the sex bias of these markers in the principal nucleus of the bed nucleus of the stria terminalis. These findings suggest the observed differences in gonadal hormone receptor expression may underlie species differences in the display of social behaviors.

Intimate Relationships Weaken Female Competition: Evidence from Phase-amplitude Coupling and Event-Related Potentials

Competition, an essential component of social interaction, frequently occurs in daily life, and the impact of intimate relationships on women's competition has not yet been revealed. In this study, the visual target paradigm was used to explore the neural mechanisms underlying the regulation of female competitiveness by intimate relationships using event-related potential (ERP) data, time–frequency analysis, and brain functional connectivity. The research results indicate that, the P1, the N4, and the LPP were sensitive to the impact of intimate relationships on competition. Compared to competition between unfamiliar opposite-gender dyads, the average amplitudes of the N4 and LPP were higher in the late stage of competition between romantic partners. Compared to competition with strangers of the opposite gender, alpha band power was significantly higher when female individuals competed with their romantic partners. In addition, there was a positive correlation between the synchronization of activity in the frontal, parietal, and right temporal lobes of a female's brain and their degree of female engagement in competition. When a female individuals focused on the competition, activity synchronization was higher. The results indicate that competition with unfamiliar individuals of the opposite gender can make female focus on the competitive task, causing synchronous activation of corresponding brain regions. When competing with a romantic partner, women's focus decreases, their willingness to compete decreases, and the synchrony of brain functional connectivity decreases. This study suggests that intimate relationship weakens women's competitiveness, which is of significant importance for understanding high-quality intimate relationship and promoting the development of healthy competition.

Attention toward emotions is modulated by familiarity with the expressor: A comparison between bonobos and humans.

Why can humans be intolerant of, yet also be empathic toward strangers? This cardinal question can be tackled by studying emotions in our closest living relatives, bonobos. Their striking xenophilic tendencies make them an interesting model for reconstructing the socioemotional capacities of the last common ancestor of hominids. Within two dot-probe studies, we compared bonobos' and humans' attention toward scenes depicting familiar (kith and kin) or unfamiliar individuals with emotional or neutral expressions. Results show that the attention of bonobos is biased toward emotional scenes depicting unfamiliar bonobos, but not toward emotional groupmates (Study 1). In contrast, Study 2 shows that human attention is biased toward emotional rather than neutral expressions of family and friends, but not toward unfamiliar others. On the one hand, our results show that an attentional bias toward emotions is a shared phenomenon between humans and bonobos, but on the other, both species have their own unique evolutionarily informed biases. These findings support previously proposed adaptive explanations for xenophilia in bonobos that potentially biases them toward emotional expressions of unfamiliar conspecifics, and parochialism in humans, which makes them sensitive to the emotional expressions of close others. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

A Comparative Study of Dogs and Goats with Limited Human Socialization in the Impossible Task Paradigm.

The study aimed to explore how limited human socialization affects the socio-cognitive abilities and interactions with unfamiliar individuals of a selected group of domesticated dogs and goats. These animals were raised and kept under conditions characterized by limited human socialization, and their behavior was assessed using the "impossible task" paradigm. The study found that dogs, with a history of cooperative interactions and human companionship, exhibited more frequent social engagement with human experimenters in the experimental setting than goats, traditionally domesticated for utilitarian purposes. However, differences in interaction duration and latency were not significant, highlighting the complexity of these interactions. The results suggest that domestication history and behavioral ecology play significant roles in shaping animals' willingness to engage with humans. However, this study acknowledges limitations, such as the specific population studied, and calls for further research with larger and more diverse samples to generalize these findings. Understanding the interplay between domestication history, behavioral ecology, and human socialization could provide insights into the complex factors influencing animal-human interactions and cognitive behaviors, with implications for animal welfare and human-animal relationships.

Disgusted snails, oxytocin, and the avoidance of infection threat

Disgust is considered to be a fundamental affective state associated with triggering the behavioral avoidance of infection and parasite/pathogen threat. In humans, and other vertebrates, disgust affects how individuals interact with, and respond to, parasites, pathogens and potentially infected conspecifics and their sensory cues. Here we show that the land snail, Cepaea nemoralis, displays a similar “disgust-like” state eliciting behavioral avoidance responses to the mucus associated cues of infected and potentially infected snails. Brief exposure to the mucus of snails treated with the Gram-negative bacterial endotoxin, lipopolysaccharide (LPS), elicited dose-related behavioral avoidance, including acute antinociceptive responses, similar to those expressed by mammals. In addition, exposure to the mucus cues of LPS treated snails led to a subsequent avoidance of unfamiliar individuals, paralleling the recognition of and avoidance responses exhibited by vertebrates exposed to potential pathogen risk. Further, the avoidance of, and antinociceptive responses to, the mucus of LPS treated snails were attenuated in a dose-related manner by the oxytocin (OT) receptor antagonist, L-368,899. This supports the involvement of OT and OT receptor homologs in the expression of infection avoidance, and consistent with the roles of OT in the modulation of responses to salient social and infection threats by rodents and other vertebrates. These findings with land snails are indicative of evolutionarily conserved disgust-like states associated with OT/OT receptor homolog modulated behavioral avoidance responses to infection and pathogen threat.

Increased N250 elicited by facial familiarity: An ERP study including the face inversion effect and facial emotion processing

The present study aims to explore how familiarity modulates the neural processing of faces under different conditions: upright or inverted, neutral or emotional. To this purpose, 32 participants (25 female; age: M = 27.7 years, SD = 9.3) performed two face/emotion identification tasks during EEG recording. In the first task, to study facial processing, three different categories of facial stimuli were presented during a target detection task: famous familiar faces, faces of loved ones, and unfamiliar faces. To explore the face inversion effect according to each level of familiarity, these facial stimuli were also presented upside down. In the second task, to study emotional face processing, an emotional identification task on personally familiar and unfamiliar faces was conducted. The behavioural results showed an improved performance in the identification of facial expressions of emotion with the increase of facial familiarity, consistent with the previous literature. Regarding electrophysiological results, we found increased amplitudes of the P100, N170, and N250 for inverted compared to upright faces, independently of their degree of familiarity. Moreover, we did not find familiarity effects at the P100 and N170 time-windows, but we found that N250 amplitude was larger for personally familiar compared to unfamiliar faces. This result supports the reasoning that the facial familiarity increases the neural activity during the N250 time-window, which may be explained by the processing of additional information prompted by the viewing of our loved ones faces, in contrast to what happens with unfamiliar individuals.

Wild mockingbirds distinguish among familiar humans

Although individuals of some species appear able to distinguish among individuals of a second species, an alternative explanation is that individuals of the first species may simply be distinguishing between familiar and unfamiliar individuals of the second species. In that case, they would not be learning unique characteristics of any given heterospecific, as commonly assumed. Here we show that female Northern Mockingbirds (Mimus polyglottos) can quickly learn to distinguish among different familiar humans, flushing sooner from their nest when approached by people who pose increasingly greater threats. These results demonstrate that a common small songbird has surprising cognitive abilities, which likely facilitated its widespread success in human-dominated habitats. More generally, urban wildlife may be more perceptive of differences among humans than previously imagined.