Impact of age on the transmission of SARS-CoV-2 in healthcare workers : Influence of nonoccupational risk factors.

BACKGROUND: The incidence of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV­2) infection was highest among older adults early in the COVID-19 pandemic; however, this pattern was later reversed with young adults showing the highest incidence. The aim of this study was to identify risk factors in healthcare workers (HCWs) associated with this evolution. METHODS: We conducted a survey nested within a prospective cohort study of 680 HCWs from a tertiary referral public hospital who received 2 doses of SARS-CoV­2 vaccine in January and February 2021 (VACCICO-VAO cohort). In October 2022 all participants were invited to participate in a survey. Risk factors were tested for association with COVID-19 ever, the number of COVID-19 episodes, and the time to the first episode. RESULTS: Among 350 respondents (51% response rate, 90% female, mean age 48.1 years), 323 COVID-19 episodes were diagnosed during the study period. Multivariable analysis revealed that age < 35 years vs. > 50 years (odds ratio, OR 2.12, 95% confidence interval, CI 1.27-3.51; P = 0.004) and not maintaining social distance at social events (OR: 1.82, 95% CI: 1.16-3.19; P = 0.011) were associated with a higher risk of COVID-19. Age < 35 years (hazard ratio, HR 1.70, 95% CI 1.14-2.54; P = 0.010), and not maintaining social distance (HR 1.34, 95% CI 1.05-1.72; P = 0.020) were also associated with the time to the first episode. CONCLUSIONS: The youngest HCWs had the highest incidence rate of COVID-19, which was not explained by occupational risk factors or health conditions. The increase in nonoccupational exposure since the end of the lockdowns in summer 2020 could by a key factor.

The effect of positive inter-group contact on cooperation: the moderating role of individualism.

Introduction: The effect of intergroup contact on cooperation is well documented, but little is known about the cultural moderators of this relationship. Contributing to the literature, we examined whether cultural orientation moderates the effect of positive intergroup contact on cooperation and places emphasis on individualism. Methods: By creating a gamecooperation situation by the trust game paradigm, 322 Taiwanese youth were involved in the study and completed the positive intergroup contact scale, individual-collectivism scale, and social distance scale. Results: (1) positive intergroup contact effectively promotes cooperative behavior; (2) Taiwanese youth who have closer social distance with mainland youth demonstrate higher levels of cooperative behavior after group interactions than larger social distance; and (3) individualism has a significant moderating role in the relationship between positive inter-group contact and cooperation. The effect of positive inter-group contact on cooperation became stronger in the less individualistic group. The effect of social distance on cooperation became stronger in the less individualistic group.Cultural orientation represented by individualism is proved to be one moderato of the intergroup contact-cooperation relationship.

Influence of Social Distance on Foreign Language Effect in Moral Judgment.

Previous research has shown that moral choice depends on language, a phenomenon known as the moral foreign language effect (mFLE). The current study examines the influence of social distance on the mFLE. In Experiment 1, 200 participants were randomly assigned to either close or distant social distance in English or Chinese. In Experiment 2, 188 participants were randomly assigned to either English or Chinese and were presented with eight moral dilemmas, each with five different levels of social distance. After reading the dilemma, participants made a choice on a binary scale (Yes/No) in both Experiments 1 and 2 or on a more sensitive 100-point scale in Experiment 2. The results showed that the mFLE was present in distant social distance but absent in close social distance. Finally, a meta-analysis of the results from both studies confirmed the effect of social distance on the mFLE. These findings demonstrate that social distance might play an important role in moderating the mFLE in moral judgment.

Unravelling consumer acceptance of local food: Physical versus social distance and the important role of social identification.

Including more locally grown products in our diet is a way to reduce our diets' environmental impact. Therefore, it is important to investigate how this can be effectively communicated on food products to increase consumer acceptance. We propose that product communication that focuses on decreasing the physical and social distance between the food producer and the consumer can result in consumers identifying more with the food producer, which, in turn, can increase the buying intention of food products. The current research comprises an online survey that includes an experimental design and a real-life assessment among 825 Dutch participants. Results of the experiment show that decreasing physical distance, but not social distance, increases consumers' intention to buy a food product. This effect can be explained by increased feelings of identification with a food producer. Moreover, the real-life assessment provides a first indication that both having a food producer living close by (physical distance) and personally knowing a food producer (social distance) might increase acceptance of the producer and the product, and highlights the relevance of perceived connection. These findings give insights into how food producers can market local food products to increase acceptance; communication on a decreased distance between consumers and the food producer is only effective when it results in more identification with the food producer. Perceived connection seems to be an essential part of the acceptance of local products.

Relationship status moderates sexual prejudice directed toward lesbian women but not gay men.

To determine whether relationship status moderates sexual prejudice, we compared heterosexual men and women's self-reported social distancing toward gay and lesbian targets who varied in relationship status (coupled, single, no information). Relationship status of gay male targets did not affect responses (Study 1): heterosexual men reported increased social distancing toward gay compared to heterosexual male targets, whereas women did not. Similarly, in Study 2, heterosexual men reported increased social distancing toward lesbian compared to heterosexual female targets, but women did not, and men reported decreased social distancing toward single lesbian women. Working from an affordance management approach, Study 3 replicated Studies 1 and 2, testing potential mediators of effects. In particular, heterosexual men reported increased social distancing toward gay male targets, compared to responses from heterosexual women. Moreover, heterosexual women reported increased social distancing toward single, compared to coupled, lesbian targets, mediated through perceptions of undesired sexual interest from the target. This work demonstrates the nuanced nature of sexual prejudice and provides further evidence of the role of perceptions of undesired sexual interest in prejudiced responses toward lesbian and gay individuals.

In masks we trust: explicit and implicit reactions to masked faces vary by political orientation.

Previous studies in the context of the COVID-19 pandemic indicated that wearing a medical-style mask affects whether a stranger's face is judged as more trustworthy, socially desirable, or likely to be ill. However, given political controversies around mask use, these effects might vary by political orientation. In a pre-registered online experiment, we measured evaluations of trustworthiness, social desirability and perceived illness in masked and unmasked faces by 1241 British and US participants. We included questions on political orientation, along with the implicit online-VAAST approach/avoid task to test reaction times to masked/unmasked faces. There was a medium-sized effect of masks on trustworthiness and a significant interaction with political orientation, in that conservatives found masked faces less trustworthy than did liberals. Participants were quicker to approach masked than unmasked faces, but conservatives were relatively slower than liberals. The effects on trustworthiness suggest that differential moralization of novel social norms can affect how their adherents are evaluated in terms of their suitability for social interactions. Furthermore, the congruence between implicit and explicit methods implies that such differences can have deep-seated effects on reactions.

The effect of psychological distance on intertemporal choice of the reward processing: an eye-tracking investigation.

This study employed eye-tracking technology to investigate how varying dimensions of psychological distance-temporal, probability, and social-affect intertemporal choice. Across three experiments, participants were asked to select between two intertemporal options while their eye movements were monitored. Findings revealed inconsistent impacts of different psychological distances on intertemporal decision-making. Increased temporal and social distances led to a preference for larger delayed rewards (Studies 1 and 3), whereas an increase in probability distance did not significantly alter choice preferences (Study 2). The research also highlighted a general pattern in information processing; as psychological distance widened, participants showed a tendency toward dimension-specific processing in making intertemporal decisions.

Public Stigma and Continuum Beliefs Across Personality Disorder Severity Levels.

Stigmatizing attitudes toward persons with personality disorders are common. Preliminary evidence suggests that continuum beliefs (the view that presented symptoms lie on a continuum with normality) are associated with reduced personality disorder stigma. This study aimed to evaluate whether this association holds across the entire spectrum of personality disorder severity and whether greater personality disorder severity is linked to higher stigma. A general population sample (N = 848) completed questions about a vignette depicting mild, moderate, or severe personality disorder severity. Higher continuum beliefs were associated with a lower desire for social distance from persons with mild, moderate, or severe personality disorder. In addition, continuum beliefs were higher, and the desired social distance was lower toward a person with mild than a person with moderate or severe personality disorder. Thus, fostering continuum beliefs might aid in combating personality disorder stigma, including toward severely affected persons who experience strong stigmatization.

Policies for recovery from drug use: Differences between public stigma and perceived stigma and associated factors.

INTRODUCTION: Public stigma towards people who use drugs is widespread and places obstacles in way of their recovery. Previous studies have used different approaches to measure public stigma, resulting in a notable gap in the understanding of the relationship between it and its associated factors. Some studies measure public stigma by assessing stigma perceived by those who use drugs, while others investigate attitudes towards them among the general public. This study aimed to compare perceived and public stigma, and factors related to these two variables. METHODS: The study comprised a cross-sectional survey in China of two samples: males who used drugs (N = 257) and the general public (N = 376). The survey assessed demographic variables, social distance, public stigma and perceived stigma of those who use drugs. The data were analysed using t-tests and linear regression. RESULTS: Public stigma was significantly higher than perceived stigma. The findings indicated that gender, knowledge of drugs, family relationships with people who use drugs, attributions of drug use and social distance were significantly related to levels of public stigma. Among those who use drugs, perceived stigma was significantly correlated with age, marital status, duration of drug abstinence and social distance. DISCUSSION AND CONCLUSIONS: Findings indicate that public stigma undermines the recovery of people who use drugs and highlight the importance of interaction between them and the social environment. The study also underscores the necessity of developing policies to enhance their integration into mainstream culture and provide access to social support and life activities.

The effect of autism phenotype and diagnosis disclosure on students' desire for social distance from autistic peers.

LAY ABSTRACT: Autistic students experience loneliness, rejection from peers, which might negatively affect both their well-being, as well as academic results. Others have studied this topic, however, the existing research does not analyze the desire for social distance from autistic female students in higher education. The goal of this study was to evaluate whether the way autism is expressed and disclosing the autism diagnosis had an effect on students' willingness to interact with autistic male and female students. We also analyzed participants' knowledge about autism, contact with autistic people in the past and its pleasantness in relation to their willingness to interact with autistic students described in the scenarios of the present study. We found that students were less willing to interact with autistic male students compared to autistic female students, as well as with autistic students whose diagnosis was not disclosed compared to autistic students whose diagnosis was disclosed to the raters. In addition, students who reported more pleasant contact with autistic individuals in the past were more willing to socially interact with autistic students if their diagnosis was disclosed. Students with higher knowledge of autism expressed greater willingness to interact with autistic males and autistic students regardless of diagnosis disclosure. Findings suggest that autistic males and individuals who prefer not to disclose their diagnosis are more vulnerable to social exclusion. More subtle expressions of autism need to be researched further.

The stigma of intellectual disability in Spain: a nationally representative survey.

BACKGROUND: Stigma towards people with intellectual disability affects various aspects of their lives, including access to employment, housing, health and social care services. Furthermore, this stigma reduces their social opportunities and is even reflected in laws that diminish their autonomy. Due to the practical significance of this issue, the aim of this research is to explore for the first time the social stigma associated with intellectual disability in a representative sample of the Spanish population. METHOD: A cross-sectional quantitative descriptive study was conducted, involving a representative sample of the population (N = 2746). The study includes descriptive analyses and hierarchical regressions to examine various dimensions of stigma, such as attitudes, attributions, and intentions of social distance. RESULTS: Medium levels of stigma are found regarding attitudes and attributions towards people with intellectual disability, while levels are medium-low concerning the intention of social distance. The most reliable indicators of stigma across its various dimensions encompass attitudes, attributions, and the intention of social distance. Factors that contribute to lower stigma include knowing someone with an intellectual disability, being willing to discuss intellectual disability with an acquaintance who has it and having a progressive political ideology. People with intellectual disability show more negative attributions towards themselves. Living with a person with an intellectual disability is another predictor of more stigmatising attitudes, but less intention of social distance. Results are mixed regarding age, gender, and educational level. CONCLUSION: Combating the stigmatisation of people with intellectual disabilities must include comprehensive actions to address attitudes, attributions and behavioural intentions. Public policies, such as national campaigns and programmes, should include contact with and open conversations about intellectual disability, and sensitivity to sociodemographic variables.

Social power and perceived risk of contagious disease: High power leads to lower risk estimation of catching COVID-19.

An accurate estimation of COVID-19 contagion risk is important in terms of understanding the dynamic of disease transmission and health behavior. Previous research has documented that many health-related variables influence the risk estimation of communicable diseases. We expanded the current understanding by investigating whether health-irrelevant factors-such as one's sense of power-can have a systematic and consequential impact on perceived risks of catching the coronavirus. Based on the social distance theory of power, we propose that people in a higher power position develop a greater sense of social distance than those in a lower power position, which may in turn predispose the former to think that they are less likely to catch contagious diseases from other people. In Study 1, we provided correlational evidence that the personal sense of power was associated with the underestimation of contagion probability in Chinese university students. In Study 2, we established the causal relationship between power and concerns for contagious diseases in nonstudent adults and revealed the mediating role of social distance in the observed effect. Overall, these results, for the first time, indicate that power can elevate perceived social distance, exerting downstreaming effects on health cognition during the COVID-19 pandemic.

Interpersonal distance perception during the normalization of an pandemic situation: Effects of mask-wearing and vaccination.

This study aimed to evaluate the effect of anti-pandemic measures, including wearing a face mask and receiving vaccinations, on interpersonal distance (IPD) during the normalization stage of the COVID-19 pandemic. Virtual reality (VR) technology was used to simulate the experimental environment and a confederate in different conditions. Thirty-one participants were asked to approach the virtual confederate, who could exhibit three vaccination states and two mask-wearing conditions, actively and passively in both indoor and outdoor environments. ANOVA results showed that the participants kept a smaller IPD from the confederate wearing a face mask (IPD = 125.6 cm) than from the one without a face mask (IPD = 154.2 cm). The effects of vaccination states were significant, with the largest distance for an unvaccinated confederate (IPD = 182.3 cm) and the smallest distance for the confederate who had received a booster vaccine (IPD = 111.5 cm). Significant effects of environment were also found, with the participants maintaining a larger IPD in an outdoor environment (IPD = 143.4 cm) than in an indoor room (IPD = 136.4 cm). Additionally, the IPD collected when the participants were passively approached (IPD = 149.6 cm) was significantly larger than that obtained when they actively approached the confederate (IPD = 130.3 cm). Moreover, when the participants faced a confederate who had received a booster vaccine and wore a mask, the IPD was not significantly different from that collected before the COVID-19 pandemic in both the active and passive patterns. These findings help us to better understand the nature of IPD and human behaviors during the normalization stage of the pandemic and provide scientific suggestions for policymakers to develop pandemic-prevention measures.

Capacity, Collision Avoidance and Shopping Rate under a Social Distancing Regime.

Capacity restrictions in stores, maintained by mechanisms like spacing customer intake, became familiar features of retailing in the time of the pandemic. Shopping rates in a crowded store under a social distancing regime are prone to considerable slowdown. Inspired by the random particle collision concepts of statistical mechanics, we introduce a dynamical model of the evolution of the shopping rate as a function of a given customer intake rate. The slowdown of each individual customer is incorporated as an additive term to the baseline value of the shopping time, proportionally to the number of other customers in the store. We determine analytically and via simulation the trajectory of the model as it approaches a Little's law equilibrium and identify the point beyond which equilibrium cannot be achieved. By relating the customer shopping rate to the slowdown compared with the baseline, we can calculate the optimal intake rate leading to maximum equilibrium spending. This turns out to be the maximum rate compatible with equilibrium. The slowdown due to the largest possible number of shoppers is more than compensated for by the increased volume of shopping. This macroscopic model is validated by simulation experiments in which avoidance interactions between pairs of shoppers are responsible for shopping delays.

Discrimination reported by people with schizophrenia: cross-national variations in relation to the Human Development Index.

AIMS: Mental health related stigma and discrimination is a universal phenomenon and a contributor to the adversity experienced by people with schizophrenia. Research has produced inconsistent findings on how discrimination differs across settings and the contextual factors that underpin these differences. This study investigates the association between country-level Human Development Index (HDI) and experienced and anticipated discrimination reported by people with schizophrenia. METHODS: This study is a secondary data analysis of a global cross-sectional survey completed by people living with schizophrenia across 29 countries, between 2005 and 2008. Experienced and anticipated discrimination were assessed using the Discrimination and Stigma Scale (DISC-10). Countries were classified according to their 2006 HDI. Negative binomial and Poisson regression analyses with a robust standard errors approach were conducted to investigate associations between country-level HDI and discrimination. RESULTS: In the regression analyses, no evidence was found for a linear association between HDI and experienced or anticipated discrimination. Further exploratory analyses showed a significant non-linear association between HDI ratings and experienced discrimination. Participants in "high" and "very high" HDI countries reported more experienced discrimination compared to those in "medium" HDI countries. CONCLUSIONS: HDI does, to some extent, appear to be associated with how far discrimination is experienced across different contexts. More high-quality cross-national research, including research focused on "medium" and "low" countries, is needed to substantiate these findings and identify underlying factors that may explain the pattern observed for experienced discrimination, including generating new datasets that would enable for these analyses to be repeated and contrasted with more recent data. An in-depth understanding of these factors will further aid the adaptation of cross-cultural and context specific anti-stigma interventions in future.

Explorative analyses on spatial differences in the desire for social distance toward people with mental illness in a diverging city.

Introduction: Stigma is an individual and societal process based on attitudes and power and relates to both spatial disparities and social distinction. In this study, we examined differences in desire for social distance toward people with mental illness within a city using social and spatial information. Methods: ANOVAs and Scheffé post-hoc tests analyzed varying desires for social distance toward people with mental illness within Leipzig (East Germany). Joint Correspondence Analyses (JCA) explored correspondences between desire for social distance, socio-economic status, age, life orientation, social support, duration of living in Leipzig, and shame toward having a mental illness in five city districts of Leipzig in LIFE study participants (by Leipzig Research Center for Civilization Disease, data collected 2011-2014 and 2018-2021, n = 521). Results: Stigma varied among Leipzig's districts (F(df = 4) = 4.52, p = 0.001). JCAs showed that a higher desired social distance toward people with mental illness corresponded with spatial differences, high levels of pessimism, high shame of being mentally ill, low social support, low socio-economic status, and older age (75.74 and 81.22% explained variances). Conclusion: In terms of stigma, where people with mental illness live matters. The results identified target groups that should be addressed by appropriate intervention and prevention strategies for mental health care.

Racial and ethnic disparities in COVID-19 diagnosis and adherence to mitigation behaviours in a national United States older adult sample.

Older adults and people of colour are vulnerable to the COVID-19 pandemic, and mitigation behaviours reduce COVID-19 infection. We examined racial and ethnic differences in COVID-19 diagnosis and adherence to COVID-19 mitigation behaviours among U.S. older adults. Data were retrieved from the National Health and Aging Trends Study, a nationally representative prospective cohort with 3257 U.S. Medicare beneficiaries aged 65+. COVID-19 variables were collected in 2020; all other data in 2019. Odds of COVID-19 diagnosis and adherence to mitigation behaviours (handwashing, masking, social distancing) were analysed using logistic regression. Compared to White older adults, only Hispanic respondents had 2.7 times significantly higher odds of COVID-19 after adjusting for sociodemographics, health, and mitigation behaviours (aOR = 2.71, 95% CI = 1.20-6.12). Black older adults had 7.9 times significantly higher odds of masking (aOR = 7.94, 95% CI = 2.33-27.04) and 2.3 times higher odds of social distancing (aOR = 2.33, 95% CI = 1.28-4.24), after adjusting for sociodemographics and health. Among all racial and ethnic groups, only Hispanic older adults had a significantly elevated COVID-19 diagnosis. Despite higher adherence to COVID-19 mitigation behaviours among racial and ethnic minorities, especially Black older adults, odds of COVID-19 remained elevated. Research is needed to explore potential mechanisms for higher odds of COVID-19 among minority older adults.

Social Distance Factor Related to the Level of Mental Health Awareness Among the Clinicians.

BACKGROUND: Stigmatization of morbidity in health care workers, the incidence of disease, the disease that interferes with the disease of medical care. Social distancing by clinicians is an integral part of the stigmatization that depends on the behavior of the patient and the level of awareness of the clinician. METHODS: The modified Bogardus Social Distance Self-Assessment Scale (BSDS) was used to evaluate the indicators of social distance phenomena. The assessment was performed by clinicians for the following groups of patients with the following mental disorders: alcohol use disorder, bipolar disorder, depression, drug addiction, epilepsy, mental retardation, schizophrenia. All statistical calculations were performed using IBM SPSS-27 software (IBM Corp. 2021, licensed to Samara State Medical University). P-value ≤ 0.05 was determined as significant for the between-group (PSY vs NPHP) comparisons using a nonparametric Wilcoxon test. RESULTS: The study included 141 clinicians: PSY (n=20; 36.2±4.2 y.o.) and NPHP (n=121; 25.9±2.2 y.o.). The NPHP group included general practitioners (GP)/physicians (n=29; 20.6%), surgeons (n=19; 13.5%), obstetrician-gynecologists (n=26; 18.4%), neurologists (n=11; 7.8%), pediatricians (n=6; 4.3%), and other subspecialists (including urologists, tuberculosis specialists, ophthalmologists, and dermatologists) (n=30; 21.3%). The study included 141 students at the Samara State Medical University who were trained in psychiatry. An anonymous survey was conducted on the BSDS scale before and after training. Our analysis of the data showed that the social distance of clinicians in terms of coverage reaches different values depending on the mental disorder, but with common trends both before and after the psychiatry training course. Mean (SD) social distance scores recurred from 2.8 (1.3) for bipolar disorder to 5.3 (1.5) for addiction in the predevelopment group and 2.9 (1.3), 5.4 (1.4) in the group of clinicians after training, respectively. CONCLUSIONS: Social distancing scores among clinicians in contemporary Russia were highest for drug addicts, and lowest for depression and bipolar disorder. Stigmatization among clinicians appears to affect the delivery of care to certain categories of patients, which requires further study. Higher social distance scores in patients with drug addiction may be associated with higher stigma and lack of compassion towards these patients. Conversely, lower rates of social distancing and the corresponding emotional acceptance of people with depression and bipolar disorder by clinicians may interfere with timely diagnosis and the availability of appropriate early, treatable care. The awareness of clinicians regarding psychopathological manifestations does not affect the level of social distance, but increases it in relation to mentally healthy individuals with normal behavior.

An Artificial Intelligence Exercise Coaching Mobile App: Development and Randomized Controlled Trial to Verify Its Effectiveness in Posture Correction.

BACKGROUND: Insufficient physical activity due to social distancing and suppressed outdoor activities increases vulnerability to diseases like cardiovascular diseases, sarcopenia, and severe COVID-19. While bodyweight exercises, such as squats, effectively boost physical activity, incorrect postures risk abnormal muscle activation joint strain, leading to ineffective sessions or even injuries. Avoiding incorrect postures is challenging for novices without expert guidance. Existing solutions for remote coaching and computer-assisted posture correction often prove costly or inefficient. OBJECTIVE: This study aimed to use deep neural networks to develop a personal workout assistant that offers feedback on squat postures using only mobile devices-smartphones and tablets. Deep learning mimicked experts' visual assessments of proper exercise postures. The effectiveness of the mobile app was evaluated by comparing it with exercise videos, a popular at-home workout choice. METHODS: Twenty participants were recruited without squat exercise experience and divided into an experimental group (EXP) with 10 individuals aged 21.90 (SD 2.18) years and a mean BMI of 20.75 (SD 2.11) and a control group (CTL) with 10 individuals aged 22.60 (SD 1.95) years and a mean BMI of 18.72 (SD 1.23) using randomized controlled trials. A data set with over 20,000 squat videos annotated by experts was created and a deep learning model was trained using pose estimation and video classification to analyze the workout postures. Subsequently, a mobile workout assistant app, Home Alone Exercise, was developed, and a 2-week interventional study, in which the EXP used the app while the CTL only followed workout videos, showed how the app helps people improve squat exercise. RESULTS: The EXP significantly improved their squat postures evaluated by the app after 2 weeks (Pre: 0.20 vs Mid: 4.20 vs Post: 8.00, P=.001), whereas the CTL (without the app) showed no significant change in squat posture (Pre: 0.70 vs Mid: 1.30 vs Post: 3.80, P=.13). Significant differences were observed in the left (Pre: 75.06 vs Mid: 76.24 vs Post: 63.13, P=.02) and right (Pre: 71.99 vs Mid: 76.68 vs Post: 62.82, P=.03) knee joint angles in the EXP before and after exercise, with no significant effect found for the CTL in the left (Pre: 73.27 vs Mid: 74.05 vs Post: 70.70, P=.68) and right (Pre: 70.82 vs Mid: 74.02 vs Post: 70.23, P=.61) knee joint angles. CONCLUSIONS: EXP participants trained with the app experienced faster improvement and learned more nuanced details of the squat exercise. The proposed mobile app, offering cost-effective self-discovery feedback, effectively taught users about squat exercises without expensive in-person trainer sessions. TRIAL REGISTRATION: Clinical Research Information Service KCT0008178 (retrospectively registered); https://cris.nih.go.kr/cris/search/detailSearch.do/24006.

Acute Social Stress Influences Moral Decision-Making Under Different Social Distances in Young Healthy Men.

Acute social stress has been shown to influence social decision-making. This study aimed to examine how social distance modulates the influence of acute social stress on young male moral decision-making. Sixty healthy male college students were randomly divided to be exposed to the Trier Social Stress Test (TSST) or a placebo version of the TSST (P-TSST) before they performed moral decision-making tasks. The results showed that participants under acute social stress showed obvious increases in subjective stress perception, negative affect, salivary cortisol, and alpha-amylase and made more altruistic choices for others compared to the control group. However, social distance regulates the promotion of this acute social stress, with the promotion effect being stronger in socially distant others. Furthermore, the interpersonal order difference of different social distances in altruistic decisions is smaller in low-conflict dilemmas than in high-conflict dilemmas. In addition, an increase in salivary cortisol was positively correlated with altruistic choices toward both acquaintances and strangers, whereas an increase in salivary alpha-amylase was only positively correlated with altruistic choices toward friends. The results suggest that social distance modulates the promotion of acute social stress on moral decision-making, which might stem from the divergent effects of cortisol and alpha-amylase.