It Is Belief in Dualism, and Not Free Will, That Best Predicts Helping: A Conceptual Replication and Extension of Baumeister et al. (2009)

Previous research found that experimentally reducing people's belief in free will affects social behaviors. However, more recent investigations could not replicate several findings in this literature. An explanation for the mixed findings is that free will beliefs are related to social behaviors on a correlational level, but experimental manipulations are not able to detect this relation. To test this interpretation, we conceptually replicated and extended a landmark study in the free will belief literature originally conducted by Baumeister et al. In five studies (total N = 1,467), we investigated whether belief in free will predicts helping behavior in comparison to other beliefs related to free will. Overall, our results support the original findings, as belief in free will correlated with helping behavior. However, the results also show that the best predictor of helping behavior is not belief in free will but belief in dualism. Theoretical implications are discussed.

Mechanisms of Self-Control in the Influence of Moral Elevation on Pro-Social Behavior: A Study Based on an Experimental Paradigm

Introduction

Because the mechanisms by which moral elevation triggers an individual's pro-social behavior remain unclear, this study examined the mediating role of self-control resources in the relationship between moral elevation and pro-social behavior.

Methods

Experiment 1 examined the effects of moral elevation on self-control resources using two task paradigms, the Stroop task and the Go/NoGo task, with 80 college students as study participants. Experiment 2 was conducted with an additional 140 college students, using both experimental and questionnaire methods to examine the mediating role of self-control resources in the effects of moral elevation on pro-social behavior.

Results

(1) The results of Experiment 1 showed that the self-control ability of the moral elevation induction group was significantly better than that of the non-induction group. The accuracy rate of self-control tasks in the induction group (0.94 ± 0.01) was significantly higher than that in the non-induction group (0.89 ± 0.01, F(1,79)=19.10, p <0.001, η2=0.50). The mean reaction time of the self-control tasks in the induction group (393.63 ± 3.5) was significantly lower than that in the non-induction group (415.38 ±7.30, F(1,79)=5.87, p =0.026, η2=0.24). (2) The results of Experiment 2 showed a significant positive correlation between moral elevation and self-control resources (r=0.46, p<0.001), a significant positive correlation between moral elevation and pro-social behavior (r=0.33, p<0.001), and a significant positive correlation between self-control resources and pro-social behavior (r=0.31, p<0.001). Not only did moral elevation significantly and positively predict pro-social behavior (β= 0.23, p=0.011), but it also significantly and positively predicted self-control resources (β= 0.46, p<0.001). Self-control resources significantly and positively predicted pro-social behavior (β= 0.20, p=0.025). The bootstrap test for the mediating effect of self-control resources showed that the upper and lower limits of the 95% confidence interval did not include 0 (indirect effect 0.09, 95% CI [0.023, 0.242], p<0.001), and the mediating effect accounted for 28.13%.

Conclusion

This study revealed the mediating role of self-control resources in the relationship between moral elevation and pro-social behavior, which has important theoretical and practical implications for cultivating pro-social behavior and moral education among college students.

"ZARPAR"-Educational Program for Cognitive and Behavioral Development: Results of an Experiment to Evaluate Its Impact on Antisocial and Pro-Social Behavior

Using an experimental design and a multi-measure and multi-informant approach, the current study sought to evaluate the impact of the early developmental prevention program "ZARPAR"-an intervention designed as a social and cognitive skills training program, that seeks to promote children's behavioral adjustment. A sample of elementary school children (experimental group n = 37; control group n = 66), attending Portuguese schools, was assessed before and 6 months after the intervention on the program's key-dimensions: behavioral problems, social skills, and executive functioning. Based on parent and teacher reports, the results largely suggested that the intervention had no effect or, for some dimensions, even the existence of negative outcomes. Possible reasons for these results are discussed. The current study highlights that, despite the overwhelmingly positive message about developmental prevention programs, not all interventions work, thus reinforcing the need for rigorous evaluations, in order to enhance the success of future interventions.

Research on the consequences of employees' unethical pro-organizational behavior: The moderating role of moral identity

Introduction

In recent years, employees' unethical pro-organizational behavior (UPB) has become a social hot issue. This behavior benefits their organization or colleagues while violating core social ethics. Numerous studies have predominately focused on identifying the antecedents and formation mechanisms of UPB. However, only a few studies have focused on the effects and outcomes of UPB. Moreover, guilt triggered by unethical behaviors can motivate individuals to adopt pro-social behaviors, but studies on the effects of UPB on pro-social behavior of actors are rather limited. Therefore, this study explores the underlying relationship between employees' UPB and their own pro-environmental behavior based on the conservation of resources theory.

Methods

Through collecting data (N = 319) from a Chinese online survey company in different time intervals, the theoretical model was tested by the application of Amos 27.0 and SPSS 25.0 for analysis of the data. The CFA, descriptive analysis, hierarchical regression were illustrated in the article.

Results

This study demonstrated that, through emotions of guilt, employees' UPB is negatively correlated with their own environmental protection act. While this relationship is being examined, moral identity plays this mediating role, which can moderate the indirect relationship between employees' UPB and their environmental behavior through guilt.

Discussion

The purpose of the research was to identify the influence mechanisms that contribute to employees' pro-organizational but unethical behavior. With guilt serving as the mediating variable and moral identity serving as the moderating variable, a research model built on the principle of the conservation of resources theory was constructed. This research examines the impact mechanism and boundary conditions of UPB on individual pro-environmental behaviors from the perspective of employees. This paper discusses the theoretical and practical implications of the report's results.

To Steal or Not to Steal: Self-Discrepancies as a Way to Promote Pro-social Behavior: The Moderating Role of Self-Interest

Previous research showed that acting immorally on one occasion can determine a greater availability for pro-social behavior on a subsequent occasion. Nevertheless, moderating factors for this effect, such as financial interest remained largely unexplored. The present field experiment (N = 587) was organized in an urban setting, in a post-communist society (Romania), in a context of public anonymity and examined passersby's pro-social behavior on two consecutive occasions. The procedure involved a confederate "losing" a banknote of different values (1, 10, 50, 100, or 500 RON), which invited passersby's pro-social behavior to return it (or not). Participants who decided to steal the banknote were approached by a second confederate and asked politely to return the banknote. Our research was articulated mainly as a quantitative approach by measuring participants' pro-social behavior toward the person who lost the banknote, their subsequent pro-social behavior toward the confederate who exposed their behavior and the number of words they produced during a post-experimental interview in which they could justify their behavior. At the same time, we also performed a qualitative approach, through which we explored the themes evoked in their justifications and their relation with their previous behavior. Results indicate a moderating effect of economic interest on pro-social behavior toward the confederate who lost the banknote, as well as on their subsequent pro-social behavior toward the second confederate. Participants who stole the banknote also used significantly more words to justify their behavior, and this tendency could be observed especially in the case for higher values of the banknote. Results are critically discussed in a context dominated by an inherited pattern of distrust and social cynicism.

The Effect of Family Atmosphere on Chinese College Students' Pro-social Behavior: The Chained Mediation Role of Gratitude and Self-Efficacy

The current study aimed to explore how family atmosphere influenced pro-social behavior among Chinese college students and to explore the mediation roles of gratitude and self-efficacy. We recruited 800 Chinese college students, and the participation rate was 89% (712 participants, M = 19.26, SD = 1.23). Participants completed the family atmosphere scale, the pro-social tendencies measure, the gratitude questionnaire, and the general self-efficacy scale. Results indicated that (1) Family atmosphere, gratitude, self-efficacy, and pro-social behavior were positively correlated after controlling for the grade, gender, and age. (2) The family atmosphere affected pro-social behavior not only directly, but also indirectly through the partial mediating role of gratitude and self-efficacy. Moreover, gratitude and self-efficacy also played a full chained mediation role in the relationship between the family atmosphere and pro-social behavior of college students. Therefore, a supportive family atmosphere is conducive to promoting college students' gratitude and self-efficacy, in turn affecting their pro-social behavior.

Leader's Perception of Corporate Social Responsibility and Team Members' Psychological Well-Being: Mediating Effects of Value Congruence Climate and Pro-Social Behavior

Previous research, that showed that corporate social responsibility (CSR) had positive effects on the corporate image and performance, has attracted much attention and resulted in an increasing number of follow-up studies. However, CSR-related activities are focused on their effect on external stakeholders, although they are social service activities geared towards internal and external stakeholders, thus showing a research gap regarding the effects of internal stakeholders on organizational effectiveness. Therefore, this study investigated the mediating effects of the value congruence climate and prosocial behavior among the team members in the relationship between leader’s CSR perception and team members’ psychological well-being, using a multilevel analysis of the relationship between the team and individual level factors. For the empirical analysis, 69 teams (334 employees) were sampled from 23 Korean small and medium-sized enterprises (SMEs). Analyses revealed a positive effect of a leader’s CSR perception on the team members’ psychological well-being. Furthermore, a leader’s CSR perception had a positive effect on his/her team’s value congruence environment and team members’ prosocial behavior. The team’s value congruence environment and team members’ prosocial behavior were found to mediate the relationship between the leader’s CSR perception and team members’ psychological well-being. The relationships among these variables were investigated using a multilevel analysis model capable of simultaneous validation of team- and individual-level factors associated with team members’ psychological well-being. Future research directions were then discussed based on the theoretical and practical implications and limitations of the study results.

Explicating Child-Driven Patterns of Parent-Child Responsivity in Fragile Families: A Longitudinal Approach

It has been well-established that development occurs in the context of a transactional framework, with bidirectional parent-child interactions influencing both proximal and distal outcomes. In particular, child vocabulary development is sensitive to parenting qualities including warmth, sensitivity, and control as well as parental stimulation including language input and access to learning enrichment activities. Similarly, these parenting qualities are influenced by and influence children's development of pro-social behaviors. Given the foundational role of both language and pro-social skills for academic achievement and the establishment of healthy relationships across the lifespan, a comprehensive understanding of the magnitude, stability, and reciprocity of such interactions across childhood has the potential to better inform early intervention and prevention practices and highlight risk and resilience factors. This study investigated the concurrent and successive transactional relationships between child pro-social behavior, child emergent language, and parenting qualities within a large, longitudinal sample. This study utilized Waves 3, 4, and 5 of the Fragile Families and Child Well Being Study (FFCWBS), corresponding to focal child age 3, 5, and 9 years, respectively. A series of Structural Equation Modeling (SEM) with full-information likelihood (FIML) estimation (n = 3,422) including child prosocial behavior, receptive vocabulary, and supportive parenting behaviors was tested and compared. Our findings indicate significant, positive associations over time between child pro-social behavior and receptive vocabulary, and parenting quality across all three stages of early child development. The steady decline in magnitude of these associations over time highlights the importance of synergistic parent-child interactions in toddlerhood as an early opportunity to propel these developmental outcomes and supportive parenting behaviors. Patterns of change in child pro-social behavior skills and parenting qualities remained positive and relatively stable, while observed growth in child receptive vocabulary skills increased in magnitude over time. Additional investigation of indirect effects specified the role of receptive vocabulary, as well as the bolstering role of prosocial behavior, in eliciting responsive parenting qualities over time.

"O Sister, Where Art Thou?"-A Review on Rescue of Imperiled Individuals in Ants

Altruism is defined as an action that decreases the lifetime direct fitness of an actor and benefits one or more recipients. This phenomenon, which is generally difficult to understand and explain, requires special research attention. The subject of this review, rescue, is a type of altruistic behavior in which the actor puts itself at risk to save another individual, the recipient, that is in danger. The highest numbers of published empirical works have been devoted to rescue behavior in ants and they have enormous potential for further study. We review studies devoted to the subject and group them into four main areas of research on ant rescue actions: (1) variation in rescue behavior activity on a between-individual scale, (2) factors contributing to the evolution of rescue behavior on a between-species scale, (3) rescue behavior releaser signals and (4) rescue behavior benefits and costs. We highlight the progress in research on rescue behavior in ants, indicate that this behavior is probably much more common than previously thought yet thus far demonstrated in only a few species, and uncover research gaps and open questions that remain unexplored. We additionally point out some gaps in knowledge that become evident when research devoted to rescue behavior in rats, the second most studied group of animals in this context, is briefly overviewed. We hope to help navigate among studies on rescue behavior and provide the most up-to-date summary of the relevant literature. Moreover, we hope to encourage and facilitate researchers in behavioral ecology and other subdisciplines to further experimentally analyze rescue behavior, not only in ants but also in other taxa.

Psychopathy and Economic Behavior Among Prison Inmates: An Experiment

This paper investigates whether there is a connection between psychopathy and certain manifestations of social and economic behavior, measured in a lab-in-the-field experiment with prison inmates. In order to test this main hypothesis, we let inmates play four games that have often been used to measure prosocial and antisocial behavior in previous experimental economics literature. Specifically, they play a prisoner's dilemma, a trust game, the equality equivalence test that elicits distributional preferences, and a corruption game. Psychopathy is measured by means of the Levenson Self-Report Psychopathy Scale (LSRP) questionnaire, which inmates filled out after having made their decisions in the four games. We find that higher scores in the LSRP are significantly correlated with anti-social behavior in the form of weaker reciprocity, lower cooperation, lower benevolence and more bribe-oriented decisions in the corruption game. In particular, not cooperating and bribe-maximizing decisions are associated with significantly higher LSRP primary and LSRP secondary scores. Not reciprocating is associated with higher LSRP primary and being spiteful with higher LSRP secondary scores.

Complex Housing, but Not Maternal Deprivation Affects Motivation to Liberate a Trapped Cage-Mate in an Operant Rat Task

Early life environment influences the development of various aspects of social behavior, particularly during sensitive developmental periods. We studied how challenges in the early postnatal period or (early) adolescence affect pro-social behavior. To this end, we designed a lever-operated liberation task, to be able to measure motivation to liberate a trapped conspecific (by progressively increasing required lever pressing for door-opening). Liberation of the trapped rat resulted either in social contact or in liberation into a separate compartment. Additionally, a condition was tested in which both rats could freely move in two separate compartments and lever pressing resulted in social contact. When partners were not trapped, rats were more motivated to press the lever for opening the door than in either of the trapped configurations. Contrary to our expectations, the trapped configuration resulted in a reduced motivation to act. Early postnatal stress (24 h maternal deprivation on postnatal day 3) did not affect behavior in the liberation task. However, rearing rats from early adolescence onwards in complex housing conditions (Marlau cages) reduced the motivation to door opening, both in the trapped and freely moving conditions, while the motivation for a sucrose reward was not affected.

Actions and the Self: I Give, Therefore I am?

Self-signaling models predict less selfish behavior in a probabilistic giving setting as individuals are expected to invest in a pro-social identity. However, there is also substantial evidence that people tend to exploit situational excuses for selfish choices (for instance, uncertainty) and behave more selfishly. We contrast these two motivations (identity management and self-deception) experimentally in order to test which one is more prevalent in a reciprocal giving setting. Trustees' back transfer choices are elicited for five different transfer levels of the trustor. Moreover, we ask trustees to provide their back transfer schedule for different scenarios that vary the implementation probability of the back transfer. This design allows us to identify subjects who reciprocate and analyze how these reciprocators respond when self-image relevant factors are varied. Our results indicate that self-deception is prevalent when subjects make the back transfer choice. Twice as many subjects seem to exploit situational excuses than subjects who appear to invest in a pro-social identity.

JEL classifications: C72, C91, D80, D91

Emotional Intelligence and Pro-Social Behavior as Predictors of Academic Achievement Among University Students

This journal article was primarily carried out to pinpoint whether emotional intelligence and pro-social behavior predicts academic achievement of University students. To achieve this, data was gathered from 111 (m = 50, F = 53) students by using stratified simple random sampling technique. As the results of Pearson correlation coefficient showed that, there was statistically significant positive association between emotional intelligence and pro-social behavior. However, it was found that there was no relationship between emotional intelligence and academic achievement. On the other hand, there was a statistically significant negative correlation between pro-social behavior and academic achievement of students. Findings from multiple regression indicated that, emotional intelligence predicted pro-social behavior of students, whereas, emotional intelligence didn't predict academic achievement of students. On the other hand, pro-social behavior negatively and significantly predicted academic achievement of students. Besides, there was no significant gender difference in emotional intelligence and pro-social behavior. However, there was statistically significant disparity amidst male and female students in academic achievement and male students exceed female counterparts in general level of academic performance. As one sample t-test result depicted, Majority of students have high level of emotional intelligence, pro-social behavior and academic performance. The researcher forwarded the following recommendations for instructors, the university management and Medias. Socio-emotional training's should be provided to students, intensive studies should be conducted on this topic, teachers of the university should advocate the importance of emotional intelligence and pro-social behavior in the class room, the university and broadcasting Medias should give attention for the topic.

What's Behind Image? Toward a Better Understanding of Image-Driven Behavior

Our experimental design systematically varies image concerns in a dictator/trust game. In comparison to the baseline, we either decrease the role of self-image concerns (by providing an excuse for selfish behavior) or increase the role of social-image concerns (by conveying the transfer choice to a third person). In this set up, we analyze the underlying processes that motivate subjects to give less/more. Controlling for distributional preferences and expectations, our results indicate that moral emotions (guilt and shame) are a significant determinant of pro-social behavior. The disposition to guilt explains giving in the baseline, while it does not when an excuse for selfish behavior exists. Subjects' disposition to shame is correlated to giving when their choice is public and they can be identified. JEL Classifications: C72, C91, D03, D80.

Practicing Social Isolation During a Pandemic in Brazil: A Description of Psychosocial Characteristics and Traits of Personality During COVID-19 Lockout

The experience of the pandemic caused by the Coronavirus and the consequent disease triggered by it (COVID-19) brought to light fragilities that have been long overlooked by the scientific community and by various political and social institutions. The pandemic also brought to the fore certain social practices resulting from individual behaviors, such as wearing a mask and practicing social isolation. It demonstrated the need for social commitment and pro-social behaviors if societies are to respond successfully. The purpose of this article is to evaluate psychological and sociodemographic characteristics associated with compliance or noncompliance of individuals with these practices in two different phases of the pandemic experience in Brazil: in the first month and after three months. Participants for the first phase of the study were recruited through advertisements in the media and social networks. 1,914 individuals aged between 14 and 81 years agreed to participate, 78.2% of these were women, from 25 Federative Units in Brazil. In the second phase, 761 individuals who participated in the first phase, were reassessed. The authors used the following instruments for data collection: a standardized questionnaire collecting information of sociodemographic characteristics and dynamics of social isolation; the Kessler Psychological Distress Scale; the Life Satisfaction Scale; the Positive and Negative Affections Scale; and the Reduced Personality Markers and Stress Mindset Scale. All instruments used presented evidence of validity and adequate reliability indexes. The comparison of categorical exploratory variables with motives for following social isolation protocols was performed using Pearson's Chi-square, and the comparison of continuous exploratory variables was performed using the Mann-Whitney test. Covariance Analysis was performed using as covariates those that showed significance/effect on isolation in previous analyses. The results showed that respondents practicing social isolation to comply with governmental recommendations had lower scores on the scales of neuroticism and conscientiousness. They reported also less stress, anxiety, and depression, and less general distress. Overall, these respondents also displayed more positive affect, and tended to reframe stress in a more positive way than others. These preliminary results describe the psychological characteristics of individuals and their associations with social behaviors in a period of collective stress and high social risk.

I Care About Your Plight, But Only If I Like Your Leader: The Effect of National Leaders' Perceived Personality on Empathy and Pro-Social Behavior Towards Their Citizenry

People's default levels of empathy toward members of a distant group tend to be low. The current research shows that favorable perceptions regarding the personality of a group's leader can stimulate empathy and pro-social behavior toward his or her countrymen. In four experimental studies (N = 884), we found that exposure to a news article that positively (vs. negatively) characterizes a foreign national leader (vs. non-national leader) led to (a) increased levels of empathy toward distressed citizens of that leader's nation, (b) willingness to help those citizens, (c) motivation to invest time in inspecting additional information elucidating the circumstances that led to this adversity, and (d) an actual monetary donation for the benefit of those people. This effect turned out to be prominent when the national leader's domestic popularity was perceived as high. The results show that national leaders are in a position to contribute to more empathetic inter-society relations and enhance pro-social behavior.

Gendered Discrimination Against Immigrants: Experimental Evidence

Recent migration from Muslim-majority countries has sparked discussions across Europe about the supposed threat posed by new immigrants. Young men make up the largest share of newly arrived immigrants and this demographic is often perceived to be particularly threatening. In this article, we compare pro-sociality and trust toward immigrants from Muslim-majority countries, focusing on gender differences in treatment. We study these questions using behavioral games that measure strategic (trusting) and non-strategic (pro-social) behavior. Our data comes from measures embedded in a large survey of residents of Germany's eastern regions, where anti-immigrant sentiments are high. We find that Germans are similarly pro-social toward immigrant men and women in non-strategic situations, but are significantly less likely to trust immigrant men (but not women) in strategic encounters. These findings provide evidence that immigrants' gender can be an important factor conditioning the behavior of the majority population, but also caution that (gendered) ethnic discrimination may be situationally dependent. Future research should further examine the exact mechanisms underlying this variation in discriminatory behavior.

Social Anxiety and Pro-social Behavior Following Varying Degrees of Rejection: Piloting a New Experimental Paradigm

In general, human beings tend to try and reconnect after they have been socially rejected. It is not clear, however, which role the number of rejecters and rejection sensitivity plays. In addition, it is unclear whether the supposed pro-social behaviors are aimed at the rejecters or at innocent individuals. By means of a new paradigm, the present pilot study investigated compensatory behavior of individuals with varying degrees of social anxiety, following varying degrees of rejection. In addition, it was explored toward whom their behavior was directed: rejecters or innocent individuals. Female students (N = 34) were assessed on their degree of social anxiety and then, based on a personal profile they wrote, they were either rejected by 1, 2, or 3 fictional other participants or completely accepted. Afterward, the participants had to explicitly rate the creativity of drawings made by the others and, in a pro-social reward paradigm, awarded the other participants money based on their creativity rating. In addition, implicit social approach tendencies toward photos of rejecters, acceptors, or innocent individuals were assessed by means of an approach-avoidance task. The results confirmed that people with a low degree of social anxiety respond to rejection in a compensatory pro-social manner explicitly as well as implicitly, but that people with a high degree of social anxiety fail to do so. With regard to sources of rejection, only implicit approach-avoidance tendencies reflected a distinction between rejecters and innocent individuals. Theoretical implications are discussed in the light of the small sample size and other limitations.

The Origins of Mental Toughness - Prosocial Behavior and Low Internalizing and Externalizing Problems at Age 5 Predict Higher Mental Toughness Scores at Age 14

Background: The concept of mental toughness (MT) has gained increasing importance among groups other than elite athletes by virtue of its psychological importance and explanatory power for a broad range of health-related behaviors. However, no study has focused so far on the psychological origins of MT. Therefore, the aims of the present study were: to explore, to what extent the psychological profiles of preschoolers aged five were associated with both (1) MT scores and (2) sleep disturbances at age 14, and 3) to explore possible gender differences.

Method: Nine years after their first assessment at age five (preschoolers), a total of 77 adolescents (mean age: 14.35 years; SD = 1.22; 42% females) took part in this follow-up study. At baseline, both parents and teachers completed the Strengths and Difficulties Questionnaire (SDQ), covering internalizing and externalizing problems, hyperactivity, negative peer relationships, and prosocial behavior. At follow-up, participants completed a booklet of questionnaires covering socio-demographic data, MT, and sleep disturbances.

Results: Higher prosocial behavior, lower negative peer relationships, and lower internalizing and externalizing problems at age five, as rated by parents and teachers, were associated with self-reported higher MT and lower sleep disturbances at age 14. At age 14, and relative to males, females had lower MT scores and reported more sleep disturbances.

Conclusion: The pattern of results suggests that MT traits during adolescence may have their origins in the pre-school years.

Neural correlates of gratitude

Gratitude is an important aspect of human sociality, and is valued by religions and moral philosophies. It has been established that gratitude leads to benefits for both mental health and interpersonal relationships. It is thus important to elucidate the neurobiological correlates of gratitude, which are only now beginning to be investigated. To this end, we conducted an experiment during which we induced gratitude in participants while they underwent functional magnetic resonance imaging. We hypothesized that gratitude ratings would correlate with activity in brain regions associated with moral cognition, value judgment and theory of mind. The stimuli used to elicit gratitude were drawn from stories of survivors of the Holocaust, as many survivors report being sheltered by strangers or receiving lifesaving food and clothing, and having strong feelings of gratitude for such gifts. The participants were asked to place themselves in the context of the Holocaust and imagine what their own experience would feel like if they received such gifts. For each gift, they rated how grateful they felt. The results revealed that ratings of gratitude correlated with brain activity in the anterior cingulate cortex and medial prefrontal cortex, in support of our hypotheses. The results provide a window into the brain circuitry for moral cognition and positive emotion that accompanies the experience of benefitting from the goodwill of others.

Social conditioned place preference in the captive ground squirrel (Ictidomys tridecemlineatus): Social reward as a natural phenotype

Social behaviors of wild animals are often considered within an ultimate framework of adaptive benefits versus survival risks. By contrast, studies of laboratory animals more typically focus on affective aspects of behavioral decisions, whether a rodent derives a rewarding experience from social encounter, and how this experience might be initiated and maintained by neural circuits. Artificial selection and inbreeding have rendered laboratory animals more affiliative and less aggressive than their wild conspecifics, leaving open the possibility that social reward is an artifact of domestication. We compared social behaviors of wild and captive population of juvenile 13-lined ground squirrels (Ictidomys tridecemlineatus), the latter being 2nd- and 3rd-generation descendants of wild individuals. At an age corresponding to emergence from the burrow, postnatal day (PD) 38, captive squirrels engaged in vigorous social approach and play and these juvenile behaviors declined significantly by PD 56. Similarly, young wild squirrels expressed social proximity and play; affiliative interactions declined with summer's progression and were replaced by agonistic chasing behaviors. Social conditioned place preference testing (conditioned PDs 40-50) indicated that adolescent squirrels derived a rewarding experience from social reunion. Our results support the contention that undomesticated rodents have the capacity for social reward and more generally suggest the possibility that positive affective experiences may support group cohesion, social cooperation, and altruism in the wild.

The evaluability bias in charitable giving: Saving administration costs or saving lives?

We describe the "evaluability bias": the tendency to weight the importance of an attribute in proportion to its ease of evaluation. We propose that the evaluability bias influences decision making in the context of charitable giving: people tend to have a strong preference for charities with low overhead ratios (lower administrative expenses) but not for charities with high cost-effectiveness (greater number of saved lives per dollar), because the former attribute is easier to evaluate than the latter. In line with this hypothesis, we report the results of four studies showing that, when presented with a single charity, people are willing to donate more to a charity with low overhead ratio, regardless of cost-effectiveness. However, when people are presented with two charities simultaneously-thereby enabling comparative evaluation-they base their donation behavior on cost-effectiveness (Study 1). This suggests that people primarily value cost-effectiveness but manifest the evaluability bias in cases where they find it difficult to evaluate. However, people seem also to value a low overhead ratio for its own sake (Study 2). The evaluability bias effect applies to charities of different domains (Study 3). We also show that overhead ratio is easier to evaluate when its presentation format is a ratio, suggesting an inherent reference point that allows meaningful interpretation (Study 4).

Helping the self help others: self-affirmation increases self-compassion and pro-social behaviors

Reflecting on an important personal value in a self-affirmation activity has been shown to improve psychological functioning in a broad range of studies, but the underlying mechanisms for these self-affirmation effects are unknown. Here we provide an initial test of a novel self-compassion account of self-affirmation in two experimental studies. Study 1 shows that an experimental manipulation of self-affirmation (3-min of writing about an important personal value vs. writing about an unimportant value) increases feelings of self-compassion, and these feelings in turn mobilize more pro-social behaviors to a laboratory shelf-collapse incident. Study 2 tests and extends these effects by evaluating whether self-affirmation increases feelings of compassion toward the self (consistent with the self-compassion account) or increases feelings of compassion toward others (an alternative other-directed compassion account), using a validated storytelling behavioral task. Consistent with a self-compassion account, Study 2 demonstrates the predicted self-affirmation by video condition interaction, indicating that self-affirmation participants had greater feelings of self-compassion in response to watching their own storytelling performance (self-compassion) compared to watching a peer’s storytelling performance (other-directed compassion). Further, pre-existing levels of trait self-compassion moderated this effect, such that self-affirmation increased self-compassionate responses the most in participants low in trait self-compassion. This work suggests that self-compassion may be a promising mechanism for self-affirmation effects, and that self-compassionate feelings can mobilize pro-social behaviors.

Pro-social behavior in rats is modulated by social experience

In mammals, helping is preferentially provided to members of one's own group. Yet, it remains unclear how social experience shapes pro-social motivation. We found that rats helped trapped strangers by releasing them from a restrainer, just as they did cagemates. However, rats did not help strangers of a different strain, unless previously housed with the trapped rat. Moreover, pair-housing with one rat of a different strain prompted rats to help strangers of that strain, evidence that rats expand pro-social motivation from one individual to phenotypically similar others. To test if genetic relatedness alone can motivate helping, rats were fostered from birth with another strain and were not exposed to their own strain. As adults, fostered rats helped strangers of the fostering strain but not rats of their own strain. Thus, strain familiarity, even to one's own strain, is required for the expression of pro-social behavior. DOI: http://dx.doi.org/10.7554/eLife.01385.001.

Pro-social behavior in rats is modulated by social experience

In mammals, helping is preferentially provided to members of one’s own group. Yet, it remains unclear how social experience shapes pro-social motivation. We found that rats helped trapped strangers by releasing them from a restrainer, just as they did cagemates. However, rats did not help strangers of a different strain, unless previously housed with the trapped rat. Moreover, pair-housing with one rat of a different strain prompted rats to help strangers of that strain, evidence that rats expand pro-social motivation from one individual to phenotypically similar others. To test if genetic relatedness alone can motivate helping, rats were fostered from birth with another strain and were not exposed to their own strain. As adults, fostered rats helped strangers of the fostering strain but not rats of their own strain. Thus, strain familiarity, even to one’s own strain, is required for the expression of pro-social behavior.

DOI:http://dx.doi.org/10.7554/eLife.01385.001

Humans help family members and friends under circumstances where they may not help strangers. However, they also help complete strangers through both direct actions, such as helping someone who has stumbled, and indirect actions, such as giving to charity. Ben-Ami Bartal et al. have now explored the biological basis of such socially selective helping by testing whether rats help strangers, and if so, under what circumstances.

In the experiments a free rat was exposed to another rat trapped inside a plastic tube with an outward-facing door for 12 one-hour sessions. When tested with a cagemate trapped inside the tube, most free rats learned within a few days to release the trapped rat by opening the door. Ben-Ami Bartal et al. then exposed the free rats to strangers they had never met or seen before. Remarkably the rats consistently released the trapped stranger, acting toward strangers just as they had acted toward familiar cagemates. This result suggested that individual familiarity is not required for helping to occur.

To test the limits of rat benevolence, Ben-Ami Bartal et al. tested free rats (always white albino rats) with trapped rats from a different outbred strain (black-hooded rats). The rats helped cagemates of a different strain but not strangers of a different strain. These results could be explained by a requirement for strain familiarity or individual familiarity. To distinguish between these possibilities, albino rats were housed for 2 weeks with a rat of a different strain, and then re-housed with another albino rat before being tested with a trapped rat belonging to a different strain. Consistent with a requirement for strain but not individual familiarity, the free rats now helped stranger rats from the different, but now familiar, strain.

To explore if there is any role for genetics or relatedness in socially selective helping, Ben-Ami Bartal et al. tested whether rats will help strangers of their own strain based on genetic relatedness alone. To do this albino pups were transferred to litters of a different strain on the day they were born, and never saw or interacted with another albino rat until testing. Remarkably, the albino rats helped strangers from the different strain that they were raised with, but they did not help strangers of their own strain because this strain was unfamiliar to them. The fact that the motivation to help other rats has its origins in social interactions rather than genetics provides the flexibility that is needed to navigate their way through social environments that often change unexpectedly.

DOI:http://dx.doi.org/10.7554/eLife.01385.002

Pro-social behavior in rats is modulated by social experience

In mammals, helping is preferentially provided to members of one's own group. Yet, it remains unclear how social experience shapes pro-social motivation. We found that rats helped trapped strangers by releasing them from a restrainer, just as they did cagemates. However, rats did not help strangers of a different strain, unless previously housed with the trapped rat. Moreover, pair-housing with one rat of a different strain prompted rats to help strangers of that strain, evidence that rats expand pro-social motivation from one individual to phenotypically similar others. To test if genetic relatedness alone can motivate helping, rats were fostered from birth with another strain and were not exposed to their own strain. As adults, fostered rats helped strangers of the fostering strain but not rats of their own strain. Thus, strain familiarity, even to one's own strain, is required for the expression of pro-social behavior. DOI: http://dx.doi.org/10.7554/eLife.01385.001.