Communication in social networks: Effects of kinship,network size,and emotional closeness

Communication is important in preventing social relationships from decaying over time. This study examined the effects of social network size, emotional closeness, and type of relationship (kinship vs. friendship) on communication patterns in the social networks of 251 women. Participants with large kin networks had longer times to last contact to both kin and friends. Participants with high levels of emotional closeness in their networks had shorter times to last contact. The effect of emotional closeness on time to last contact was greater for kin than for friends. These results demonstrate that time to last contact is closely tied to emotional closeness and suggest that the costs of maintaining kin relationships are lower than the costs of maintaining friendships.     

Emotional Closeness as a Mediator of the Effect of Genetic Relatedness on Altruism

Inclusive fitness theory has been used to explain the overall pattern of altruistic behavior. However, this theory does not address the proximal causes of altruism. The purpose of the present study was to increase the understanding of altruism by testing a model that includes both ultimate and proximate causes. In particular, emotional closeness was tested as a mediator of the effect of genetic relatedness on altruistic behavior. This was accomplished by having college students choose which of their family members they would most likely provide with life-saving assistance. As expected, results showed that emotional closeness is an important proximal cause of altruism that partially mediates the effect of genetic relatedness on willingness to act altruistically.     

Altruism between romantic partners: Biological offspring as a genetic bridge between altruist and recipient

When the cost of altruism is low, individuals are more likely to help non-kin (i.e., friends and romantic partners) than kin. This trend is thought to reflect the fact that people tend to be emotionally closer with friends and romantic partners than kin. However, as the cost of altruism increases, altruistic preference shifts to kin. The present study highlights this phenomenon by examining altruism between siblings, romantic partners, romantic partners who have biological children together, and romantic partners who have adopted children together. Participants (n = 203) completed a questionnaire about altruism in low-, medium-, and high-cost situations. Participants gave more low-cost help to their romantic partners (regardless of whether they had a child together) than their siblings. More medium-cost help was given to romantic partners who had a child (biological and adopted) than siblings and romantic partners without children. In the high-cost condition, the estimated altruistic tendencies were stronger toward siblings and romantic partners who have a biological child than toward romantic partners with no children and partners with adopted children. Participants also believed they were more altruistic than their siblings and romantic partners.     

Kinship and altruism: A cross‐cultural experimental study

Humans are characterized by an unusual level of prosociality. Despite this, considerable indirect evidence suggests that biological kinship plays an important role in altruistic behaviour. All previous reports of the influence of kin selection on human altruism have, however, used correlational (rather than experimental) designs, or imposed only a hypothetical or negligible time cost on participants. Since these research designs fail either to control for confounding variables or to meet the criteria required as a test of Hamilton's rule for kin selection (that the altruist pays a true cost), they fail to establish unequivocally whether kin selection plays a role. We show that individuals from two different cultures behave in accordance with Hamilton's rule by acting more altruistically (imposing a higher physical cost upon themselves) towards more closely related individuals. Three possible sources of confound were ruled out: generational effects, sexual attraction and reciprocity. Performance on the task however did not exhibit a perfect linear relationship with relatedness, which might reflect either the intrusion of other variables (e.g. cultural differences in the way kinship is costed) or that our behavioural measure is insufficiently sensitive to fine‐tuned differences in the way individuals view their social world. These findings provide the first unequivocal experimental evidence that kinship plays a role in moderating altruistic behaviour. Kinship thus represents a baseline against which individuals pitch other criteria (including reciprocity, prosociality, obligation and a moral sense) when deciding how to behave towards others.     

Social Support from Family and Friends and Subjective Well-Being of Older African Americans

This study examines the impact of informal social support from family and friends on the well-being of older African Americans. Analyses are based on a nationally representative sample of older African Americans from the National Survey of American Life (n = 837). Three measures of well-being are examined: life satisfaction, happiness and self-esteem. The social support variables include frequency of contact with family and friends, subjective closeness with family and friends, and negative interactions with family. Results indicate that family contact is positively correlated with life satisfaction. Subjective closeness with family is associated with life satisfaction and happiness and both subjective closeness with friends and negative interaction with family are associated with happiness and self-esteem. There are also significant interactions between family closeness and family contact for life satisfaction, as well as friendship closeness and negative interaction with family for happiness. Overall, our study finds that family and friend relationships make unique contributions to the well-being of older African Americans. Qualitative aspects of family and friend support networks (i.e., subjective closeness, negative interactions) are more important than are structural aspects (i.e., frequency of contact). Our analysis verify that relationships with family members can both enhance and be detrimental to well-being. The findings are discussed in relation to prior research on social support and negative interaction and their unique associations with well-being among older African Americans.     

Sexually dimorphic preference for altruism in the opposite sex according to recipient

Sexual selection may affect human altruistic behaviour. Evolutionary psychology predicts that human mate preference reflects sexual selection. We investigated sex differences in preference for opposite‐sex altruism according to recipient because the reasons for altruistic behaviour differ according to the relationship between actor and recipient. We employed the Self‐Report Altruism Scale Distinguished by the Recipient, which was newly developed to evaluate altruism among Japanese undergraduates. We asked participants to evaluate preferences for each item based on the recipient of the altruistic behaviour (family members, friends or acquaintances, and strangers). Preference for opposite‐sex altruism differed according to recipient, gender of the participant, and relationship type, and several significant interactions were observed among these factors. We suggest that whereas women use a potential partner's altruism towards strangers as a costly signal of their resource‐holding potential when choosing a mate, they consider altruism towards family when they are in a long‐term relationship to ensure that resources are not allocated to non‐relatives.     

Gender differences in cross-generation networks

In later life, cross-generational networks are primarily among kin; friends are considered to be of the same cohort. Kin networks are likely to have an integrity of their own, independent of any of their members. Members are likely to share basic values or to avoid issues that might cause conflict or estrangement. Sex differences are profound. Mother-daughter bonds are both strongest throughout life and most complex, serving to link household units into modified extended family networks. Major life events like marriage of a daughter, birth of a child, or illness of a parent alternatively loosen or strengthen these bonds. Critical conceptual/methodological problems abound, such as definitions of the basic constructs like “closeness,” and “affect.”     

Altruistic Celibacy, Kin-Cue Manipulation, and The Development of Religious Institutions

Abstract. Building on a model first proposed by Gary Johnson, it is hypothesized that religious institutions demanding celibacy and other forms of altruism from members take advantage of human predispositions to favor genetic relatives in order to maintain and reinforce these desired behaviors in non‐kin settings. This is accomplished through the institutionalization of practices to manipulate cues through which such relatives are regularly identified. These cues are association, phenotypic similarity, and the use of kin terms. In addition, the age of recruits and their contact with actual kin are factors that relate to kinship recognition and that are similarly manipulated by institutions in order to reinforce altruistic behavior directed toward non‐kin. Support for this set of predictions is presented from historical and ethnographic sources on monastic life in Buddhism, Christianity, and Hinduism, as well as Islamic dervish groups, the Essenes, Shakers, and others. Potential implications of the model for understanding the development of religious institutions are preliminarily explored by reviewing Joachim Wach's model of religious developmental stages as well as some of the literature on the relationship between individualism and communalism in incipient religious organizations, in light of the kin‐cue manipulation model.     

Who Belongs to Me? Social Relationship and Personality Characteristics in the Transition to Young Adulthood

Not much is known about how social network characteristics change in the transition out of school and what role Big Five personality plays in this context. The aim of this paper was twofold. First, we explored changes in social network and relationship characteristics across the transition out of secondary school. Second, we examined within‐person and between‐person effects of personality on these social network changes. Results based on a series of multilevel models to a longitudinal sample of 2287 young adults revealed four main findings. First, social networks increased in size, and this increase was mainly due to a larger number of nonkin. Stable social networks during the transition consisted mainly of family ties but were generally characterized by high closeness. Second, extraversion and openness consistently predicted network size, whereas agreeableness predicted network overlap. Third, increases in emotional closeness were found only for kin; closeness was generally lower for unstable relationships. Fourth, changes in emotional closeness were related to personality, particularly neuroticism, agreeableness, and conscientiousness for stable relationships; for unstable relationships, however, closeness was related to extraversion and openness. The article concludes by discussing the role of personality for social relationship development and the active moulding of social networks in young adulthood. Copyright © 2014 European Association of Personality Psychology     

Quality of relationships and structural properties of social support networks of female survivors of abuse

The purposes of this study were to examine the structural properties of the social support networks of female survivors of violence and abuse and to investigate the quality of the relationship, and specific level of satisfaction, survivors have with their social support networks. Participants averaged 5.8 persons in their social support networks. Their levels of satisfaction with the emotional, practical, financial, guidance, and socializing support they received from members of their social support networks were higher with respect to close friends and coworkers than with respect to family members and professionals (e.g., attorneys and social workers). The most common type of support provided by close friends who were themselves victims of abuse was emotional, guidance, and socializing support, and the most satisfying support was the financial and practical help that came from parents or family. An interesting finding was the significant presence of men in the survivors' social support networks. Overall satisfaction with the quality of support from the social support networks was high, and satisfaction with support from men was comparable, if not higher, than support from women. Multiple regression models revealed that satisfaction with support networks was a potent predictor of self-esteem, emotional health, and loneliness. Intimacy, especially in terms of exclusiveness and trust or loyalty, with at least a few members of the support network contributed significantly to the variance in self-esteem, emotional health, and loneliness among the abused women. The size of the support network also emerged as a limited contributor to well-being. Implications and applications are discussed for professionals working with female survivors of abuse.     

The sibling uncertainty hypothesis: Facial resemblance as a sibling recognition cue

For the same reason that fathers could not have been certain their mates’ offspring were their genetic progeny during human evolutionary history, full siblings could not have been certain that they shared paternal genes. Previous kin recognition research suggests facial resemblance is a cue men use to help solve the adaptive problem of paternity uncertainty and identify their biological offspring. Facial resemblance may also be a cue individuals use to identify siblings who share paternal genes. In the current study, facial resemblance between siblings was hypothesized to be positively associated with their emotional closeness and altruism, and inversely related with their frequency of conflict. Within families, individuals reported greater closeness and altruism toward siblings who more closely resembled them. In contrast with previous offspring recognition research, the effects of resemblance were not sex-differentiated, suggesting that facial resemblance is a cue both sexes use in sibling recognition.     

Three measures of closeness in adolescents’ relationships with parents and friends: Variations and developmental significance

Two studies examined the nature and developmental significance of closeness in adolescents’ relationships with parents and friends. Three measures of relationship closeness (i.e., interdependence, emotional tone, and subjective opinion) were compared and contrasted. In Study 1, grade and gender differences in closeness in relationships with mothers, fathers, and friends were examined. Participants were 133 adolescents in Grades 7, 9, and 11 and 135 of their parents. Closeness in relationships with mothers, fathers, and friends varied based on closeness measure, grade of adolescent, gender of adolescent, and gender of parent. The results suggest that the interdependence measure offers a perspective on adolescents’ close relationships that differs from that provided by the emotional tone and subjective opinion measures. In Study 2, associations were examined between the three measures of closeness in adolescents’ relationships with mothers, fathers, and friends and adolescents’ problem behavior, substance use, and school performance. Participants included 107 adolescents in Grades 7 and 10. In combination, the measures of closeness in relationships with mothers and with fathers explained significant variability in the criterion variables, and reports of interdependence and emotional tone emerged as unique, significant predictors. The results highlight distinctions among the three conceptualizations that are commonly purported to assess a close relationship and point to the utility and validity of interdependence and emotional tone as measures of closeness in adolescents’ relationships.     

A link between altruism and sexual selection: Genetic influence on altruistic behaviour and mate preference towards it

Altruistic behaviour raises major questions for psychology and biology. One hypothesis proposes that human altruistic behaviour evolved as a result of sexual selection. Mechanisms that seek to explain how sexual selection works suggest genetic influence acting on both the mate preference for the trait and the preferred trait itself. We used a twin study to estimate whether genetic effects influenced responses to psychometric scales measuring mate preference towards altruistic traits (MPAT) and the preferred trait (i.e., ‘altruistic personality’). As predicted, we found significant genetic effects influencing variation in both. We also predicted that individuals expressing stronger MPAT and ‘altruistic personality’ would have mated at a greater frequency in ancestral populations. We found evidence for this in that 67% of the covariance in the phenotypic correlation between the two scales was associated with significant genetic effects. Both sets of findings are thus consistent with the hypothesized link between sexual selection and human altruism towards non‐kin. We discuss how this study contributes to our understanding of altruistic behaviour and how further work might extend this understanding.     

Use of social network sites and instant messaging does not lead to increased offline social network size, or to emotionally closer relationships with offline network members

The effect of Internet use on social relationships is still a matter of intense debate. This study examined the relationships between use of social media (instant messaging and social network sites), network size, and emotional closeness in a sample of 117 individuals aged 18 to 63 years old. Time spent using social media was associated with a larger number of online social network "friends." However, time spent using social media was not associated with larger offline networks, or feeling emotionally closer to offline network members. Further, those that used social media, as compared to non-users of social media, did not have larger offline networks, and were not emotionally closer to offline network members. These results highlight the importance of considering potential time and cognitive constraints on offline social networks when examining the impact of social media use on social relationships.     

Altruistic behavior and cooperation: The role of intrinsic expectation when reputational information is incomplete

Altruistic behavior is known to be conditional on the level of altruism of others. However, people often have no information, or incomplete information, about the altruistic reputation of others, for example when the reputation was obtained in a different social or economic context. As a consequence, they have to estimate the other's altruistic intentions. Using an economic game, we showed that without reputational information people have intrinsic expectations about the altruistic behavior of others, which largely explained their own altruistic behavior. This implies that when no information is available, intrinsic expectations can be as powerful a driver of altruistic behavior as actual knowledge about other people's reputation. Two strategies appeared to co-exist in our study population: participants who expected others to be altruistic and acted even more altruistically themselves, while other participants had low expected altruism scores and acted even less altruistically than they expected others to do. We also found evidence that generosity in economic games translates into benefits for other social contexts: a reputation of financial generosity increased the attractiveness of partners in a social cooperative game. This result implies that in situations with incomplete information, the fitness effects of indirect reciprocity are cumulative across different social contexts.     

人际距离和情绪知觉对利他选择的影响

本研究采用社会正念范式（SoMi）,考察不同人际距离对其社会正念利他选择的影响。结果发现：（1）不同人际关系产生的人际距离对社会正念利他选择不同,被试与陌生人的利他选择最低,与父母的利他选择其次,与朋友的利他选择略高于对父母的利他选择;（2）情绪面孔产生的人际距离越近,利他选择行为越高,人际距离越远,利他选择行为越低;高兴面孔表情利他选择频次最高,悲伤面孔表情次之,愤怒面孔表情利他选择最低。     

Family reconciliation as a response to adolescent crises

Concern for adolescents who act in dangerous, life-threatening ways has heightened dramatically in recent years. Many of these adolescents appear to come from nuclear families isolated from their kinship systems. Without the mediating effects of kin, the adolescent transition can become a major crisis. Kinship systems remain cohesive when members can reconcile their beliefs about essential aspects of family functioning with the demands for adaptation during major life transitions. Reconciliation is lost when members believe that kin can no longer be trusted to insure their well-being. Kinship fragmentation ensues as family members leave the field or are excluded. Isolated nuclear families then rapidly lose the resilience to respond to life transitions without resorting to extreme, maladaptive solutions. The Systemic Crisis Intervention Program (SCIP) uses the opportunity of the crisis precipitated by the adolescent's life-threatening behavior to alter family myths that have led to network fragmentation. Crisis teams mobilize and meet with kin in four-hour gatherings to foster reconciliation and kinship system reintegration.     

The interdependence of horizontal family relationships and friendships relates to higher well‐being

Assuming individual differences in the satisfaction of affiliative needs, the authors hypothesize that people maintain friendships differently depending on the number and the quality of their horizontal family relationships, and this relates to differences in subjective well‐being. These predictions were tested in 2 studies involving German adults aged 30 to 86 years. Contrary to previous studies, the authors studied the importance of friends in relation to family relationships and identified friends in participants' networks based on predefined criteria. Results showed that less close relationships with horizontal family were accompanied by greater closeness to friends and vice versa, and this was related to higher well‐being. The findings demonstrate that people shape their relationships in accordance to their social environment, and benefit from doing so by enhanced well‐being.     

Kinship Support and Academic Efficacy Among College Students: A Cross-Sectional Examination

The study examined whether relationships with extended kin were related to higher levels of mental health and academic functioning among college students. Specifically, the study tested whether perceived emotional support from extended (non-nuclear) family was related to self-esteem, psychological distress, and academic efficacy and dedication above and beyond relationships with one’s primary caregivers, and whether these associations varied by class year in college. The sample consisted of 530 students (average age = 20.82), at a public, four-year university. The results revealed that freshmen and seniors who reported high levels of positive relationships with their extended kin also reported higher levels of academic-efficacy and dedication, as well as lower levels of psychological distress. However, the relation between kin emotional support and these outcomes were not significant for sophomores and juniors. There was also a significant association between kinship support and self-esteem for participants in all four class levels. The study underscores the need to examine extended social support systems among college students, above and beyond those maintained with primary caregivers, as well as the dynamic nature of family support during young adulthood.