Friendship ♥

Friendship is a relationship of mutual affection between two or more people.[1] Friendship is a stronger form of interpersonal bond than an association. Friendship has been studied in academic fields such as sociology, social psychology, anthropology, and philosophy. Various academic theories of friendship have been proposed, including social exchange theory, equity theory, relational dialectics, and attachment styles. A World Happiness Database study found that people with close friendships are happier.[2]

Although there are many forms of friendship, some of which may vary from place to place, certain characteristics are present in many types of friendship. Such characteristics include affection, sympathy, empathy, honesty, altruism, mutual understanding and compassion, enjoyment of each other's company, trust, and the ability to be oneself, express one's feelings, and make mistakes without fear of judgment from the friend.

While there is no practical limit on what types of people can form a friendship, friends tend to share common backgrounds, occupations, or interests, and have similar demographics.

In the typical sequence of an individual's emotional development, friendships come after parental bonding and before pair bonding. In the intervening period between the end of early childhood and the onset of full adulthood, friendships are often the most important relationships in the emotional life of the adolescent, and are often more intense than relationships later in life. The absence of friends can be emotionally damaging.

The evolutionary psychology approach to human development has led to the theory of Dunbar's number, proposed by British anthropologist Robin Dunbar. He theorized that there is a limit of approximately 150 people 

with whom a human can maintain stable social relationships

emphasized sharing, loyalty and commitment. In the final stage, they increasingly desired similar attitudes, values and interests.

According to Berndt, children prize friendships that are high in prosocial behavior, intimacy, and other positive features; they are troubled by friendships that are high in conflict, dominance, rivalry, and other negative features. High-quality friendships have often been assumed to have positive effects on many aspects of children's social development. Perceived benefits from such friendships include enhanced social success, but they apparently do not include an effect on children's general self-esteem. Numerous studies with adults suggest that friendships and other supportive relationships do enhance self-esteem (Berndt, 2002)

A study examined over 9,000 American adolescents to determine how their engagement in problem behavior (such as stealing, fighting, truancy) was related to their friendships. Findings indicated that adolescents were less likely to engage in problem behavior when their friends did well in school, participated in school activities, avoided drinking, and had good mental health. The opposite was found regarding adolescents who did engage in more problem behavior. Whether adolescents were influenced by their friends to engage in problem behavior depended on how much they were exposed to those friends, and whether they and their friendship groups "fit in" at school (Crosnoe, R., & Needham, B., 2004)

A study by researchers from Purdue University found that friendships formed during post-secondary education last longer than friendships formed earlier