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Friendship formation is a dynamic process shaped by psychological, cultural, and social factors. Friendships play a crucial role in emotional well-being, social development, and personal identity from childhood to adulthood.Childhood and Early FriendshipsFriendships in childhood often arise due to shared environments, such as school or neighborhood interactions. At this stage, proximity and common interests serve as the primary basis for connection. As children grow, their friendships evolve...
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The need for affiliation is a fundamental human motive that drives individuals to form and maintain interpersonal relationships. This universal drive varies in intensity among individuals due to genetic predispositions and life experiences, shaping it into a relatively stable personality trait. Social inclusion enhances emotional well-being by fulfilling the need for affiliation, whereas social exclusion leads to distress, negative emotions, and cognitive impairments.Psychological and Emotional...
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As formulated by John Thibaut and Harold Kelley, Social Exchange Theory explains human relationships as economic-like exchanges that maximize rewards and minimize costs. This theory suggests that individuals engage in relationships to gain benefits and reduce burdens, similar to economic transactions. It has been widely applied to various types of relationships, including romantic, professional, and social interactions.Rewards and Costs in RelationshipsRelationship rewards include emotional...
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Best Friends: Alliances, Friend Ranking, and the MySpace Social Network.

Peter DeScioli1, Robert Kurzban2, Elizabeth N Koch3

  • 1Economic Science Institute, Chapman University, Orange, CA.

Perspectives on Psychological Science : a Journal of the Association for Psychological Science
|July 11, 2015
PubMed
Summary
This summary is machine-generated.

Human friendship may be rooted in forming alliances for potential disputes. People prefer friends who rank them highly, supporting the alliance hypothesis for evolved social connections.

Keywords:
friendshipsocial cognitionsocial networks

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Area of Science:

  • Psychology
  • Evolutionary Psychology
  • Social Network Analysis

Background:

  • Understanding the evolved function of human friendship is complex.
  • Digital traces from online social activity offer new research avenues.
  • The MySpace social network provides data on friendship choices.

Purpose of the Study:

  • To empirically test hypotheses about the evolved function of human friendship.
  • To investigate the alliance hypothesis using large-scale online social data.
  • To determine factors predicting friendship choices in a digital environment.

Main Methods:

  • Collected over 10 million friendship decisions from the MySpace social network.
  • Analyzed user-generated "Top Friends" rankings.
  • Tested predictions derived from the alliance hypothesis.

Main Results:

  • Found significant support for the alliance hypothesis.
  • An individual's best friend choice on MySpace was strongly predicted by how partners ranked them.
  • Preference for partners who rank an individual highly aligns with alliance model predictions.

Conclusions:

  • Human friendship may serve the evolved function of forming alliances for potential disputes.
  • Online social data can effectively test evolutionary hypotheses about social behavior.
  • Reciprocal ranking within friendships is a key indicator of alliance formation.