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Tend-and-befriend is a behavior exhibited by some animals, including humans, in response to threat. It refers to protection of
offspring In biology, offspring are the young creation of living organisms, produced either by a single organism or, in the case of sexual reproduction, two organisms. Collective offspring may be known as a brood or progeny in a more general way. This ca ...
(tending) and seeking out their
social group In the social sciences, a social group can be defined as two or more people who interact with one another, share similar characteristics, and collectively have a sense of unity. Regardless, social groups come in a myriad of sizes and varieties ...
for mutual defense (befriending). In
evolutionary psychology Evolutionary psychology is a theoretical approach in psychology that examines cognition and behavior from a modern evolutionary perspective. It seeks to identify human psychological adaptations with regards to the ancestral problems they evolv ...
, tend-and-befriend is theorized as having evolved as the typical female response to stress. The tend-and-befriend theoretical model was originally developed by Shelley E. Taylor and her research team at the
University of California, Los Angeles The University of California, Los Angeles (UCLA) is a public land-grant research university in Los Angeles, California. UCLA's academic roots were established in 1881 as a teachers college then known as the southern branch of the California S ...
and first described in a '' Psychological Review'' article published in the year 2000.


Biological bases

According to the
Polyvagal theory Polyvagal theory (''poly-'' "many" + ''vagal'' "wandering") is a collection of unproven, evolutionary, neuroscientific, and psychological constructs pertaining to the role of the vagus nerve in emotion regulation, social connection and fear respo ...
developed by Dr. Stephen Porges, the "Social Nervous System" is an affiliative neurocircuitry that prompts affiliation, particularly in response to stress. This system is described as regulating social approach behavior. A biological basis for this regulation appears to be oxytocin.Carter, C.S., Lederhendler, I.I., & Kirkpatrick, B., eds. (1999). ''The integrative neurobiology of affiliation''. Cambridge, Mass.:
MIT Press The MIT Press is a university press affiliated with the Massachusetts Institute of Technology (MIT) in Cambridge, Massachusetts (United States). It was established in 1962. History The MIT Press traces its origins back to 1926 when MIT publis ...
.
Oxytocin Oxytocin (Oxt or OT) is a peptide hormone and neuropeptide normally produced in the hypothalamus and released by the posterior pituitary. It plays a role in social bonding, reproduction, childbirth, and the period after childbirth. Oxytocin ...
has been tied to a broad array of
social relationships A social relation or also described as a social interaction or social experience is the fundamental unit of analysis within the social sciences, and describes any voluntary or involuntary interpersonal relationship between two or more individuals ...
and activities, including peer bonding,
sexual activity Human sexual activity, human sexual practice or human sexual behaviour is the manner in which humans experience and express their sexuality. People engage in a variety of sexual acts, ranging from activities done alone (e.g., masturbation) t ...
, and affiliative preferences. Oxytocin is released in humans in response to a broad array of stressors, especially those that may trigger affiliative needs. Oxytocin promotes affiliative behavior, including maternal tending and social contact with peers. Thus, affiliation under stress serves tending needs, including protective responses towards offspring. Affiliation may also take the form of befriending, namely seeking social contact for one's own protection, the protection of offspring, and the protection of the social group. These social responses to threat reduce biological stress responses, including lowering heart rate, blood pressure, and
hypothalamic pituitary adrenal axis The hypothalamus () is a part of the brain that contains a number of small nuclei with a variety of functions. One of the most important functions is to link the nervous system to the endocrine system via the pituitary gland. The hypothalamus i ...
(HPA) stress activity, such as
cortisol Cortisol is a steroid hormone, in the glucocorticoid class of hormones. When used as a medication, it is known as hydrocortisone. It is produced in many animals, mainly by the '' zona fasciculata'' of the adrenal cortex in the adrenal gl ...
responses. Women are more likely to respond to stress through tending and befriending than men. Paralleling this behavioral sex difference,
estrogen Estrogen or oestrogen is a category of sex hormone responsible for the development and regulation of the female reproductive system and secondary sex characteristics. There are three major endogenous estrogens that have estrogenic hormonal ac ...
enhances the effects of
oxytocin Oxytocin (Oxt or OT) is a peptide hormone and neuropeptide normally produced in the hypothalamus and released by the posterior pituitary. It plays a role in social bonding, reproduction, childbirth, and the period after childbirth. Oxytocin ...
, whereas
androgens An androgen (from Greek ''andr-'', the stem of the word meaning "man") is any natural or synthetic steroid hormone that regulates the development and maintenance of male characteristics in vertebrates by binding to androgen receptors. This incl ...
inhibit oxytocin release.


Tending under stress

Female stress responses that increased offspring survival would have led to higher fitness and thus were more likely to be passed on through
natural selection Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations. Char ...
. In the presence of threats, protecting and calming offspring while blending into the environment may have increased chances of survival for mother and child. When faced with stress, females often respond by tending to offspring, which in turn reduces stress levels. Studies conducted by Repetti (1989) show that mothers respond to highly stressful workdays by providing more nurturing behaviors towards their children. In contrast, fathers who experienced stressful workdays were more likely to withdraw from their families or were more interpersonally conflictual that evening at home. Furthermore, physical contact between mothers and their offspring following a threatening event decreased HPA activity and sympathetic nervous system arousal. Oxytocin, released in response to stressors, may be the mechanism underlying the female caregiving response. Studies of ewes show that administration of oxytocin promoted maternal behavior. Breastfeeding in humans, which is associated with maternal oxytocin release, is physiologically calming to both mothers and infants.


Cooperative breeding

Tend-and-befriend is a critical, adaptive strategy that would have enhanced
reproductive success Reproductive success is an individual's production of offspring per breeding event or lifetime. This is not limited by the number of offspring produced by one individual, but also the reproductive success of these offspring themselves. Reproduct ...
among female cooperative breeders. Cooperative breeders are group-living animals where infant and juvenile care from non-mother helpers are essential to offspring survival. Cooperative breeders include wolves, elephants, many nonhuman primates, and humans. Among all primates and most mammals, endocrinological and neural processes lead females to nurture infants, including unrelated infants, after being exposed long enough to infant signals. Non-mother female wolves and wild dogs sometimes begin lactating to nurse the alpha female's pups. Humans are born helpless and
altricial In biology, altricial species are those in which the young are underdeveloped at the time of birth, but with the aid of their parents mature after birth. Precocial species are those in which the young are relatively mature and mobile from the mome ...
, mature slowly, and depend on parental investment well into their young adult lives, and often even later. Humans have spent most of human evolution as
hunter-gatherer A traditional hunter-gatherer or forager is a human living an ancestrally derived lifestyle in which most or all food is obtained by foraging, that is, by gathering food from local sources, especially edible wild plants but also insects, fungi ...
foragers. Among foraging societies without modern
birth control Birth control, also known as contraception, anticonception, and fertility control, is the use of methods or devices to prevent unwanted pregnancy. Birth control has been used since ancient times, but effective and safe methods of birth contr ...
methods, women tend to give birth about every four years during their reproductive lifespan. When mothers give birth, they often have multiple dependent children in their care, who rely on adults for food and shelter for years. Such a reproductive strategy would not have been able to evolve if women did not have help from others. Allomothers (helpers who are not a child's mother) protect, provision, carry, and care for children. Allomothers are usually a child's aunts, uncles, fathers, grandmothers, siblings, and other women in the community. Even in modern Western societies, parents often rely on family members, friends, and babysitters to help care for children. Burkart, Hrdy, and Van Schaik (2009) argue that cooperative breeding in humans may have led to the evolution of psychological adaptations for greater prosociality, enhanced social cognition, and cognitive abilities for cooperative purposes, including willingness to share mental states and shared intentionality. These cognitive, prosocial processes brought on by cooperative breeding may have led to the emergence of culture and language.


Befriending under stress

Group living provides numerous benefits, including protection from predators and cooperation to achieve shared goals and access to resources. Women create, maintain, and use social networks—especially friendships with other women—to manage stressful conditions. During threatening situations, group members can be a source of support and protection for women and their children. Research shows that women are more likely to seek the company of others in times of stress, compared to men. Women and adolescent girls report more sources of
social support Social support is the perception and actuality that one is cared for, has assistance available from other people, and most popularly, that one is part of a supportive social network. These supportive resources can be emotional (e.g., nurturance), ...
and are more likely to turn to same-sex peers for support than men or boys are. Cross-culturally, women and girls tend to provide more frequent and effective support than men do, and they are more likely to seek help and support from other female friends and family members. Women tend to affiliate with other women under stressful situations. However, when women were given a choice to either wait alone or to affiliate with an unfamiliar man before a stressful laboratory challenge, they chose to wait alone. Female-female social networks can provide assistance for childcare, exchange of resources, and protection from predators, other threats, and other group members. Smuts (1992) and Taylor et al. (2000) argue that female social groups also provide protection from male aggression.


Neuroendocrine underpinnings

Human and animal studies (reviewed in Taylor et al., 2000) suggest that oxytocin is the neuroendocrine mechanism underlying the female "befriend"
stress response The fight-or-flight or the fight-flight-or-freeze response (also called hyperarousal or the acute stress response) is a physiological reaction that occurs in response to a perceived harmful event, attack, or threat to survival. It was first des ...
. Oxytocin administration to rats and prairie voles increased social contact and social grooming behaviors, reduced stress, and lowered aggression. In humans, oxytocin promotes mother-infant attachments, romantic pair bonds, and friendships. Social contact or support during stressful times leads to lowered sympathetic and neuroendocrine stress responses. Although social support downregulates these physiological stress responses in both men and women, women are more likely to seek social contact during stress. Furthermore, support from another female provides enhanced stress-reducing benefits to women. However, a review of female aggression noted that "The fact that OT xytocinenhances, rather than diminishes, attention to potential threat in the environment casts doubt on the popular ‘tend-and-befriend’ hypothesis which is based on the presumed
anxiolytic An anxiolytic (; also antipanic or antianxiety agent) is a medication or other intervention that reduces anxiety. This effect is in contrast to anxiogenic agents which increase anxiety. Anxiolytic medications are used for the treatment of anxi ...
effect of OT".


Benefits of affiliation under stress

According to Taylor (2000), affiliative behaviors and tending activities reduce biological stress responses in both parents and offspring, thereby reducing stress-related health threats. "Befriending" may lead to substantial mental and physical health benefits in times of stress.
Social isolation Social isolation is a state of complete or near-complete lack of contact between an individual and society. It differs from loneliness, which reflects temporary and involuntary lack of contact with other humans in the world. Social isolation c ...
is associated with significantly enhanced risk of mortality, whereas social support is tied to positive health outcomes, including reduced risk of illness and death. Women have higher life expectancies from birth in most countries where there is equal access to medical care. In the United States, for example, this difference is almost 6 years. One hypothesis is that men's responses to stress (which include aggression, social withdrawal, and substance abuse) place them at risk for adverse health-related consequences. In contrast, women's responses to stress, which include turning to social sources for support, may be protective to health.


Competition for resources

Group living and affiliation with multiple unrelated others of the same sex (who do not share genetic interests) also presents the problem of competing for access to limited resources, such as social status, food, and mates. Interpersonal stress is the most common and distressing type of stress for women. Although the befriending stress response may be especially activated for women under conditions of resource scarcity, resource scarcity also entails more intense competition for these resources. In environments with a female-biased sex ratio, where males are a more limited resource, female-to-female competition for mates is intensified, sometimes even resorting to violence. Although male crime rates far exceed those of females, arrests for assault among females follow a similar age distribution as in males, peaking for females in the late teens to mid-twenties. Those are ages in which females are at peak reproductive potential and experience the most mating competition. However, the benefits of affiliation would have outweighed the costs in order for tend-and-befriend to have evolved.


Competition and aggression

Rates of
aggression Aggression is overt or covert, often harmful, social interaction with the intention of inflicting damage or other harm upon another individual; although it can be channeled into creative and practical outlets for some. It may occur either reacti ...
between human males and females may not differ, but the patterns of aggression between the sexes do differ. Although females in general are less physically aggressive, they tend to engage in as much or even more indirect aggression (e.g.
social exclusion Social exclusion or social marginalisation is the social disadvantage and relegation to the fringe of society. It is a term that has been used widely in Europe and was first used in France in the late 20th century. It is used across discipline ...
, gossip, rumors, denigration). When experimentally primed with a mating motive or status competition motive, men were more willing to become directly aggressive towards another man, whereas women were more likely to indirectly aggress against another woman in an aggression-provoking situation. However, experimentally priming people with a resource competition motive increased direct aggression in both men and women. Consistent with this result, rates of violence and crime are higher among males and females under conditions of resource scarcity. In contrast, resource competition did not increase direct aggression in either men or women when they were asked to imagine themselves married and with a young child. The costs of physical injury to a parent would also entail costs to his or her family. Lower
variance In probability theory and statistics, variance is the expectation of the squared deviation of a random variable from its population mean or sample mean. Variance is a measure of dispersion, meaning it is a measure of how far a set of numbe ...
in
reproductive success Reproductive success is an individual's production of offspring per breeding event or lifetime. This is not limited by the number of offspring produced by one individual, but also the reproductive success of these offspring themselves. Reproduct ...
and higher costs of physical aggression may explain the lower rates of physical aggression among human females compared to males. Females are in general more likely to produce offspring in their lifetimes than males. Therefore, they have less to gain from fighting and the risk of injury or death would produce greater fitness cost for females. The survival of young children depended more on
maternal ] A mother is the female parent of a child. A woman may be considered a mother by virtue of having given birth, by raising a child who may or may not be her biological offspring, or by supplying her ovum for fertilisation in the case of ges ...
than
paternal care In biology, paternal care is parental investment provided by a male to his own offspring. It is a complex social behaviour in vertebrates associated with animal mating systems, life history traits, and ecology. Paternal care may be provided in co ...
, which underscores the importance of maternal safety, survival, and risk aversion. Infants' primary attachment is to their mother, and maternal death increased the chances of childhood mortality in foraging societies by fivefold, compared to threefold in the cases of paternal death. Therefore, women respond to threats by tending and befriending, and female aggression is often indirect and covert in nature to avoid retaliation and physical injury.


=Informational warfare

= Women befriend others not only for protection, but also to form
alliance An alliance is a relationship among people, groups, or states that have joined together for mutual benefit or to achieve some common purpose, whether or not explicit agreement has been worked out among them. Members of an alliance are called ...
s to compete with
outgroup Outgroup may refer to: * Outgroup (cladistics) In cladistics or phylogenetics, an outgroup is a more distantly related group of organisms that serves as a reference group when determining the evolutionary relationships of the ingroup, the set of o ...
members for resources, such as food, mates, and social and cultural resources (e.g. status, social positions, rights and responsibilities). Informational warfare is the strategic, competitive tactics taking the form of indirect, verbal aggression directed towards rivals.
Gossip Gossip is idle talk or rumour, especially about the personal or private affairs of others; the act is also known as dishing or tattling. Gossip is a topic of research in evolutionary psychology, which has found gossip to be an important mean ...
is one such tactic, functioning to spread information that would damage the reputation of a competitor. There are several theories regarding gossip, including social bonding and
group cohesion Group cohesiveness (also called group cohesion and social cohesion) arises when bonds link members of a social group to one another and to the group as a whole. Although cohesion is a multi-faceted process, it can be broken down into four main c ...
. However, consistent with informational warfare theory, the content of gossip is relevant to the context in which competition is occurring. For example, when competing for a work promotion, people were more likely to spread negative work-related information about a competitor to coworkers. Negative gossip also increases with resource scarcity and higher resource value. In addition, people are more likely to spread negative information about potential rivals but more likely to pass on positive information about family members and friends. As mentioned above, befriending can serve to protect women from threats, including harm from other people. Such threats are not limited to physical harm but also include reputational damage. Women form friendships and alliances in part to compete for limited resources, and also in part to protect themselves from relational and reputational harm. The presence of friends and allies can help deter malicious gossip, due to an alliance's greater ability to retaliate, compared to a single individual's ability. Studies by Hess and Hagen (2009) show that the presence of a competitor's friend reduced people's tendencies to gossip about the competitor. This effect was stronger when the friend was from the same competitive social environment (e.g. same workplace) than when the friend was from a nonrelevant social environment. Friends increase women's perceived capabilities for inflicting reputational harm on a rival as well as perceptions of defensive capabilities against indirect aggression.


See also

*
Coping (psychology) Coping refers to conscious strategies used to reduce unpleasant emotions. Coping strategies can be cognitions or behaviours and can be individual or social. Theories of coping Hundreds of coping strategies have been proposed in an attempt to ...
*
Need for affiliation The need for affiliation (N-Affil) is a term that was popularized by David McClelland and describes a person's need to feel a sense of involvement and "belonging" within a social group; McClelland's thinking was strongly influenced by the pioneering ...
*
Peer support Peer support occurs when people provide knowledge, experience, emotional, social or practical help to each other. It commonly refers to an initiative consisting of trained supporters (although it can be provided by peers without training), and can ...
*
Positive psychology Positive psychology is the scientific study of what makes life most worth living, focusing on both individual and societal well-being. It studies "positive subjective experience, positive individual traits, and positive institutions...it aims t ...


References

{{Reflist


Further reading

* Aronson, E., Wilson, T.D., & Akert, R.M. (2005). ''Social Psychology''. (5th ed.) Upper Saddle River, NJ:
Pearson Education Pearson Education is a British-owned education publishing and assessment service to schools and corporations, as well for students directly. Pearson owns educational media brands including Addison–Wesley, Peachpit, Prentice Hall, eCollege ...
, Inc. * Friedman, H.S., & Silver, R.C. (Eds.) (2007). ''Foundations of Health Psychology''. New York:
Oxford University Press Oxford University Press (OUP) is the university press of the University of Oxford. It is the largest university press in the world, and its printing history dates back to the 1480s. Having been officially granted the legal right to print books ...
. * Gurung, R.A.R. (2006). ''Health Psychology: A Cultural Approach''. Belmont, CA:
Thomson Wadsworth Cengage Group is an American educational content, technology, and services company for the higher education, K-12, professional, and library markets. It operates in more than 20 countries around the world.(Jun 27, 2014Global Publishing Leaders 2 ...
.


External links


"Tend and Befriend"
Nancy K. Dess, ''
Psychology Today ''Psychology Today'' is an American media organization with a focus on psychology and human behavior. It began as a bimonthly magazine, which first appeared in 1967. The ''Psychology Today'' website features therapy and health professionals direc ...
'' Human behavior Psychological stress