Friendship (English Wikipedia)

Howes, Carollee (1983). "Patterns of Friendship". Child Development. 54 (4): 1041–1053. doi:10.2307/1129908. ISSN 0009-3920. JSTOR 1129908.
DeJesus, Jasmine M.; Rhodes, Marjorie; Kinzler, Katherine D. (2013-10-07). "Evaluations Versus Expectations: Children's Divergent Beliefs About Resource Distribution". Cognitive Science. 38 (1): 178–193. doi:10.1111/cogs.12093. ISSN 0364-0213. PMID 24117730. S2CID 8358667.
Liberman, Zoe; Shaw, Alex (November 2018). "Secret to friendship: Children make inferences about friendship based on secret sharing". Developmental Psychology. 54 (11): 2139–2151. doi:10.1037/dev0000603. ISSN 1939-0599. PMID 30284884. S2CID 52914199.
Liberman, Zoe; Shaw, Alex (August 2019). "Children use similarity, propinquity, and loyalty to predict which people are friends". Journal of Experimental Child Psychology. 184: 1–17. doi:10.1016/j.jecp.2019.03.002. ISSN 0022-0965. PMID 30974289. S2CID 109941102.
Reisman, John M. (September 1, 1985). "Friendship and its Implications for Mental Health or Social Competence". The Journal of Early Adolescence. 5 (3): 383–91. doi:10.1177/0272431685053010. S2CID 144275803.
Verkuyten, Maykel; Masson, Kees (1996-10-01). "Culture and Gender Differences in the Perception of Friendship by Adolescents". International Journal of Psychology. 31 (5): 207–217. doi:10.1080/002075996401089. ISSN 0020-7594. Archived from the original on 2023-07-26. Retrieved 2023-07-26.
Crosnoe, Robert; Needham, Belinda (2004). "Holism, contextual variability, and the study of friendships in adolescent development". Child Development. 75 (1): 264–279. doi:10.1111/j.1467-8624.2004.00668.x. ISSN 0009-3920. PMID 15015689.
Willis, Amy (November 8, 2011). "Most adults have 'only two close friends'". The Telegraph. London. Archived from the original on 2022-01-11. Retrieved August 11, 2013.
- Brashears, Matthew E. (2011). "Small networks and high isolation? A reexamination of American discussion networks". Social Networks. 33 (4). Elsevier BV: 331–341. doi:10.1016/j.socnet.2011.10.003. ISSN 0378-8733.
- Berndt, Thomas J. (2002). "Friendship Quality and Social Development" (PDF). Current Directions in Psychological Science. 11. American Psychological Society: 7–10. doi:10.1111/1467-8721.00157. S2CID 14785379. Archived (PDF) from the original on 2019-08-18. Retrieved 2016-10-22.
- Carstensen, L.L. (1993). "Motivation for social contact across the life span: A theory of socioemotional selectivity". In Jacobs, J.E. (ed.). Nebraska Symposium on Motivation, 1992: Developmental perspectives on motivation. Lincoln, Neb.: University of Nebraska Press. pp. 209–254.
  - Carstensen, L.L.; Isaacowitz, D.M.; Charles, S.T. (1999). "Taking time seriously: A theory of socioemotional selectivity". American Psychologist. 54 (3): 165–181. doi:10.1037/0003-066X.54.3.165. PMID 10199217.
  - Spencer, Liz; Pahl, Ray (2007). Rethinking Friendship: Hidden Solidarities Today. Princeton University Press. p. 59. doi:10.1515/9780691188201. ISBN 978-0-691-18820-1.
  - Dunbar, R.I.M. (January 2018). "The Anatomy of Friendship". Trends in Cognitive Sciences. 22 (1): 32–51. doi:10.1016/j.tics.2017.10.004. ISSN 1364-6613. PMID 29273112. S2CID 31147785.
  - Williams, Keelah E.G.; Krems, Jaimie Arona; Ayers, Jessica D.; Rankin, Ashley M. (January 2022). "Sex differences in friendship preferences". Evolution and Human Behavior. 43 (1): 44–52. Bibcode:2022EHumB..43...44W. doi:10.1016/j.evolhumbehav.2021.09.003. ISSN 1090-5138. S2CID 244009099.
  - Boothby, Erica J.; Cooney, Gus; Sandstrom, Gillian M.; Clark, Margaret S. (2018). "The Liking Gap in Conversations: Do People Like Us More Than We Think?". SAGE Journals. Vol. 29, no. 11. pp. 1742–1756. doi:10.1177/0956797618783714.
    - Ducharme, Jamie (2018-09-17). "People Like You More Than You Think, a New Study Suggests". Time.
    - Wiener, Judith; Schneider, Barry H. (2002). "A multisource exploration of the friendship patterns of children with and without learning disabilities". Journal of Abnormal Child Psychology. 30 (2): 127–41. doi:10.1023/A:1014701215315. PMID 12002394. S2CID 42157217. Archived from the original on 27 September 2018. Retrieved 26 September 2017.
      - Hoza, Betsy (June 7, 2007). "Peer Functioning in Children With ADHD". Journal of Pediatric Psychology. 32 (6): 101–06. doi:10.1016/j.ambp.2006.04.011. PMC 2572031. PMID 17261489.
      - Bauminger, Nirit; Solomon, Marjorie; Aviezer, Anat; Heung, Kelly; Gazit, Lilach; Brown, John; Rogers, Sally J. (3 January 2008). "Children with Autism and Their Friends: A Multidimensional Study of Friendship in High-Functioning Autism Spectrum Disorder". Journal of Abnormal Child Psychology. 36 (2): 135–50. doi:10.1007/s10802-007-9156-x. PMID 18172754. S2CID 35579739.
      - David-Barrett, Tamas; Rotkirch, Anna; Carney, James; Behncke Izquierdo, Isabel; Krems, Jaimie A.; Townley, Dylan; McDaniell, Elinor; Byrne-Smith, Anna; Dunbar, Robin I. M. (2015-03-16). Jiang, Luo-Luo (ed.). "Women Favour Dyadic Relationships, but Men Prefer Clubs: Cross-Cultural Evidence from Social Networking". PLOS ONE. 10 (3) e0118329. Bibcode:2015PLoSO..1018329D. doi:10.1371/journal.pone.0118329. ISSN 1932-6203. PMC 4361571. PMID 25775258.
      - Pearce, Eiluned; Machin, Anna; Dunbar, Robin I. M. (18 October 2020). "Sex Differences in Intimacy Levels in Best Friendships and Romantic Partnerships". Adaptive Human Behavior and Physiology. 7 (1). Springer Science and Business Media LLC: 1–16. doi:10.1007/s40750-020-00155-z. ISSN 2198-7335. S2CID 226358247.
      - Bailey, Michael; Johnston, Drew; Kuchler, Theresa; Kumar, Ayush; Stroebel, Johannes (2025). Cross-Gender Social Ties Around the World (Report). Cambridge, MA: National Bureau of Economic Research. doi:10.3386/w33480.
      - Deresiewicz, William (2007). "Thomas Hardy and the History of Friendship Between the Sexes". The Wordsworth Circle. 38 (1–2): 56–63. doi:10.1086/TWC24043958. ISSN 0043-8006. S2CID 165725516.
      - Doucerain, Marina M.; Ryder, Andrew G.; Amiot, Catherine E. (October 2021). "What Are Friends for in Russia Versus Canada?: An Approach for Documenting Cross-Cultural Differences". Cross-Cultural Research. 55 (4): 382–409. doi:10.1177/10693971211024599. ISSN 1069-3971. S2CID 236265614.
      - Tillmann-Healy, Lisa M. (2003-10-01). "Friendship as Method". Qualitative Inquiry. 9 (5): 729–749. doi:10.1177/1077800403254894. ISSN 1077-8004. S2CID 144256070.
      - Konstan, David (1997). Friendship in the Classical World. Key Themes in Ancient History. Cambridge: Cambridge University Press. p. 2. doi:10.1017/cbo9780511612152. ISBN 978-0-521-45402-5.
      - Trivers, Robert L. (March 1971). "The Evolution of Reciprocal Altruism". The Quarterly Review of Biology. 46 (1): 35–57. doi:10.1086/406755. ISSN 0033-5770.
      - Burkett, Brandy; Cosmides, Leda; Bugental, Daphne (2007). "Jealousy, friendship, and the banker's paradox". PsycEXTRA Dataset. doi:10.1037/e514412014-554.
      - DeScioli, Peter; Kurzban, Robert (2009-06-03). "The Alliance Hypothesis for Human Friendship". PLOS ONE. 4 (6) e5802. Bibcode:2009PLoSO...4.5802D. doi:10.1371/journal.pone.0005802. ISSN 1932-6203. PMC 2688027. PMID 19492066.
      - DeScioli, Peter; Kurzban, Robert; Koch, Elizabeth N.; Liben-Nowell, David (January 2011). "Best Friends". Perspectives on Psychological Science. 6 (1): 6–8. doi:10.1177/1745691610393979. ISSN 1745-6916. PMID 26162107. S2CID 212547.
      - Jorm, Anthony F. (2005). "Social networks and health: it's time for an intervention trial". Journal of Epidemiology and Community Health. 59 (7): 537–538. doi:10.1136/jech.2004.031559. ISSN 0143-005X. PMC 1757066. PMID 15965132.
      - "Friendships play key role in suicidal thoughts of girls, but not boys". EurekAlert!. Ohio State University. January 6, 2004. Retrieved 26 September 2017.
        Bearman, Peter S.; Moody, James (2004). "Suicide and Friendships Among American Adolescents". American Journal of Public Health. 94 (1): 89–95. doi:10.2105/AJPH.94.1.89. PMC 1449832. PMID 14713704.
        Brendgen, M.; Vitaro, F.; Bukowski, W.M.; Dionne, G.; Tremblay, R.E.; Boivin, M. (2013). "Can friends protect genetically vulnerable children from depression?". Development and Psychopathology. 25 (2): 277–89. doi:10.1017/s0954579412001058. PMID 23627944. S2CID 12110401.
        Bukowski, W.M.; Hoza, B.; Boivin, M. (1994). "Measuring friendship quality during pre- and early adolescence: the development and psychometric properties of the friendship qualities scale". Journal of Social and Personal Relationships. 11 (3): 471–84. doi:10.1177/0265407594113011. S2CID 143806076.
        Shen, Chun; Rolls, Edmund T; Xiang, Shitong; Langley, Christelle; Sahakian, Barbara J; Cheng, Wei; Feng, Jianfeng (2023-07-03). Whelan, Robert; Büchel, Christian; Whelan, Robert; Schreuders, Lisa (eds.). "Brain and molecular mechanisms underlying the nonlinear association between close friendships, mental health, and cognition in children". eLife. 12 e84072. doi:10.7554/eLife.84072. ISSN 2050-084X. PMC 10317501. PMID 37399053.
        "Is more always better?". eLife. 2023-07-03. Retrieved 2023-07-03.
        Krems, Jaimie; Williams, Keelah; Kenrick, Douglas; Aktipis, Athena (2020-04-28). "Friendship jealousy: One tool for maintaining friendships in the face of third-party threats?". Journal of Personality and Social Psychology. 120 (4): 977–1012. doi:10.31234/osf.io/wdc2q. PMID 32772531. S2CID 221101011.
        Krems, Jaimie Arona; Williams, Keelah E.G.; Merrie, Laureon A.; Kenrick, Douglas T.; Aktipis, Athena (March 2022). "Sex (similarities and) differences in friendship jealousy". Evolution and Human Behavior. 43 (2): 97–106. Bibcode:2022EHumB..43...97K. doi:10.1016/j.evolhumbehav.2021.11.005. ISSN 1090-5138.
        Hemelrijk, Charlotte K.; Steinhauser, Jutta (2007), "15 Cooperation, Coalition, and Alliances", Handbook of Paleoanthropology, Berlin, Heidelberg: Springer Berlin Heidelberg, pp. 1321–1346, doi:10.1007/978-3-540-33761-4_43, ISBN 978-3-540-32474-4
        Hemelrijk, Charlotte K.; Luteijn, Madelein (1998-03-23). "Philopatry, male presence and grooming reciprocation among female primates: a comparative perspective". Behavioral Ecology and Sociobiology. 42 (3): 207–215. Bibcode:1998BEcoS..42..207H. doi:10.1007/s002650050432. ISSN 0340-5443. S2CID 43297085.
        Shutt, Kathryn; MacLarnon, Ann; Heistermann, Michael; Semple, Stuart (2007-02-27). "Grooming in Barbary macaques: better to give than to receive?". Biology Letters. 3 (3): 231–233. doi:10.1098/rsbl.2007.0052. ISSN 1744-9561. PMC 2464693. PMID 17327200.
        Silk, Joan B. (October 2002). "The Form and Function of Reconciliation in Primates". Annual Review of Anthropology. 31 (1): 21–44. doi:10.1146/annurev.anthro.31.032902.101743. ISSN 0084-6570.
        Zamma, Koichiro (March 2002). "Grooming site preferences determined by lice infection among Japanese macaques in Arashiyama". Primates. 43 (1): 41–49. doi:10.1007/bf02629575. ISSN 0032-8332. PMID 12091746. S2CID 42457072.
        Schino, Gabriele (2006-10-03). "Grooming and agonistic support: a meta-analysis of primate reciprocal altruism". Behavioral Ecology. 18 (1): 115–120. doi:10.1093/beheco/arl045. hdl:10.1093/beheco/arl045. ISSN 1465-7279.
        Connor, Richard C.; Smolker, Rachel; Bejder, Lars (December 2006). "Synchrony, social behaviour and alliance affiliation in Indian Ocean bottlenose dolphins, Tursiops aduncus". Animal Behaviour. 72 (6): 1371–1378. doi:10.1016/j.anbehav.2006.03.014. ISSN 0003-3472. S2CID 4513557.
        Connor, Richard; Mann, Janet; Watson-Capps, Jana (2006-06-09). "A Sex-Specific Affiliative Contact Behavior in Indian Ocean Bottlenose Dolphins, Tursiops sp". Ethology. 112 (7): 631–638. Bibcode:2006Ethol.112..631C. doi:10.1111/j.1439-0310.2006.01203.x. ISSN 0179-1613.
        Strauss, Eli D.; Holekamp, Kay E. (2019-03-11). "Social alliances improve rank and fitness in convention-based societies". Proceedings of the National Academy of Sciences. 116 (18): 8919–8924. Bibcode:2019PNAS..116.8919S. doi:10.1073/pnas.1810384116. ISSN 0027-8424. PMC 6500164. PMID 30858321.
        Cameron, Elissa Z.; Setsaas, Trine H.; Linklater, Wayne L. (2009-08-18). "Social bonds between unrelated females increase reproductive success in feral horses". Proceedings of the National Academy of Sciences. 106 (33): 13850–13853. Bibcode:2009PNAS..10613850C. doi:10.1073/pnas.0900639106. ISSN 0027-8424. PMC 2728983. PMID 19667179.

elifesciences.org (Global: low place; English: low place)

Shen, Chun; Rolls, Edmund T; Xiang, Shitong; Langley, Christelle; Sahakian, Barbara J; Cheng, Wei; Feng, Jianfeng (2023-07-03). Whelan, Robert; Büchel, Christian; Whelan, Robert; Schreuders, Lisa (eds.). "Brain and molecular mechanisms underlying the nonlinear association between close friendships, mental health, and cognition in children". eLife. 12 e84072. doi:10.7554/eLife.84072. ISSN 2050-084X. PMC 10317501. PMID 37399053.
- "Is more always better?". eLife. 2023-07-03. Retrieved 2023-07-03.

elitedaily.com (Global: 2,723^rd place; English: 1,776^th place)

Lafata, Alexia (17 Jun 2015). "Your Childhood Friendships Are The Best Friendships You'll Ever Have". Elite Daily. Archived from the original on 10 August 2016. Retrieved 21 June 2016.

eurekalert.org (Global: 3,538^th place; English: 3,083^rd place)

"Friendships play key role in suicidal thoughts of girls, but not boys". EurekAlert!. Ohio State University. January 6, 2004. Retrieved 26 September 2017.
- Bearman, Peter S.; Moody, James (2004). "Suicide and Friendships Among American Adolescents". American Journal of Public Health. 94 (1): 89–95. doi:10.2105/AJPH.94.1.89. PMC 1449832. PMID 14713704.

ghostarchive.org (Global: 32^nd place; English: 21^st place)

Willis, Amy (November 8, 2011). "Most adults have 'only two close friends'". The Telegraph. London. Archived from the original on 2022-01-11. Retrieved August 11, 2013.
- Brashears, Matthew E. (2011). "Small networks and high isolation? A reexamination of American discussion networks". Social Networks. 33 (4). Elsevier BV: 331–341. doi:10.1016/j.socnet.2011.10.003. ISSN 0378-8733.

handle.net (Global: 102^nd place; English: 76^th place)

hdl.handle.net

Schino, Gabriele (2006-10-03). "Grooming and agonistic support: a meta-analysis of primate reciprocal altruism". Behavioral Ecology. 18 (1): 115–120. doi:10.1093/beheco/arl045. hdl:10.1093/beheco/arl045. ISSN 1465-7279.

harvard.edu (Global: 18^th place; English: 17^th place)

ui.adsabs.harvard.edu

Williams, Keelah E.G.; Krems, Jaimie Arona; Ayers, Jessica D.; Rankin, Ashley M. (January 2022). "Sex differences in friendship preferences". Evolution and Human Behavior. 43 (1): 44–52. Bibcode:2022EHumB..43...44W. doi:10.1016/j.evolhumbehav.2021.09.003. ISSN 1090-5138. S2CID 244009099.
David-Barrett, Tamas; Rotkirch, Anna; Carney, James; Behncke Izquierdo, Isabel; Krems, Jaimie A.; Townley, Dylan; McDaniell, Elinor; Byrne-Smith, Anna; Dunbar, Robin I. M. (2015-03-16). Jiang, Luo-Luo (ed.). "Women Favour Dyadic Relationships, but Men Prefer Clubs: Cross-Cultural Evidence from Social Networking". PLOS ONE. 10 (3) e0118329. Bibcode:2015PLoSO..1018329D. doi:10.1371/journal.pone.0118329. ISSN 1932-6203. PMC 4361571. PMID 25775258.
DeScioli, Peter; Kurzban, Robert (2009-06-03). "The Alliance Hypothesis for Human Friendship". PLOS ONE. 4 (6) e5802. Bibcode:2009PLoSO...4.5802D. doi:10.1371/journal.pone.0005802. ISSN 1932-6203. PMC 2688027. PMID 19492066.
Krems, Jaimie Arona; Williams, Keelah E.G.; Merrie, Laureon A.; Kenrick, Douglas T.; Aktipis, Athena (March 2022). "Sex (similarities and) differences in friendship jealousy". Evolution and Human Behavior. 43 (2): 97–106. Bibcode:2022EHumB..43...97K. doi:10.1016/j.evolhumbehav.2021.11.005. ISSN 1090-5138.
Hemelrijk, Charlotte K.; Luteijn, Madelein (1998-03-23). "Philopatry, male presence and grooming reciprocation among female primates: a comparative perspective". Behavioral Ecology and Sociobiology. 42 (3): 207–215. Bibcode:1998BEcoS..42..207H. doi:10.1007/s002650050432. ISSN 0340-5443. S2CID 43297085.
Connor, Richard; Mann, Janet; Watson-Capps, Jana (2006-06-09). "A Sex-Specific Affiliative Contact Behavior in Indian Ocean Bottlenose Dolphins, Tursiops sp". Ethology. 112 (7): 631–638. Bibcode:2006Ethol.112..631C. doi:10.1111/j.1439-0310.2006.01203.x. ISSN 0179-1613.
Strauss, Eli D.; Holekamp, Kay E. (2019-03-11). "Social alliances improve rank and fitness in convention-based societies". Proceedings of the National Academy of Sciences. 116 (18): 8919–8924. Bibcode:2019PNAS..116.8919S. doi:10.1073/pnas.1810384116. ISSN 0027-8424. PMC 6500164. PMID 30858321.
Cameron, Elissa Z.; Setsaas, Trine H.; Linklater, Wayne L. (2009-08-18). "Social bonds between unrelated females increase reproductive success in feral horses". Proceedings of the National Academy of Sciences. 106 (33): 13850–13853. Bibcode:2009PNAS..10613850C. doi:10.1073/pnas.0900639106. ISSN 0027-8424. PMC 2728983. PMID 19667179.

jstor.org (Global: 26^th place; English: 20^th place)

Howes, Carollee (1983). "Patterns of Friendship". Child Development. 54 (4): 1041–1053. doi:10.2307/1129908. ISSN 0009-3920. JSTOR 1129908.
Cooper, John M. (1977). "Aristotle on the Forms of Friendship". The Review of Metaphysics. 30 (4): 619–648. ISSN 0034-6632. JSTOR 20126987.

monster.com (Global: low place; English: low place)

career-advice.monster.com

Bryant, Susan. "Workplace Friendships: Asset or Liability?". Monster.com. Archived from the original on 2013-01-26. Retrieved October 25, 2012.

ndss.org (Global: low place; English: low place)

"Friendships & Social Relationships". National Down Syndrome Society. Archived from the original on 2023-07-26. Retrieved 2023-07-26.

nih.gov (Global: 4^th place; English: 4^th place)

pubmed.ncbi.nlm.nih.gov

DeJesus, Jasmine M.; Rhodes, Marjorie; Kinzler, Katherine D. (2013-10-07). "Evaluations Versus Expectations: Children's Divergent Beliefs About Resource Distribution". Cognitive Science. 38 (1): 178–193. doi:10.1111/cogs.12093. ISSN 0364-0213. PMID 24117730. S2CID 8358667.
Liberman, Zoe; Shaw, Alex (November 2018). "Secret to friendship: Children make inferences about friendship based on secret sharing". Developmental Psychology. 54 (11): 2139–2151. doi:10.1037/dev0000603. ISSN 1939-0599. PMID 30284884. S2CID 52914199.
Liberman, Zoe; Shaw, Alex (August 2019). "Children use similarity, propinquity, and loyalty to predict which people are friends". Journal of Experimental Child Psychology. 184: 1–17. doi:10.1016/j.jecp.2019.03.002. ISSN 0022-0965. PMID 30974289. S2CID 109941102.
Crosnoe, Robert; Needham, Belinda (2004). "Holism, contextual variability, and the study of friendships in adolescent development". Child Development. 75 (1): 264–279. doi:10.1111/j.1467-8624.2004.00668.x. ISSN 0009-3920. PMID 15015689.
Carstensen, L.L. (1993). "Motivation for social contact across the life span: A theory of socioemotional selectivity". In Jacobs, J.E. (ed.). Nebraska Symposium on Motivation, 1992: Developmental perspectives on motivation. Lincoln, Neb.: University of Nebraska Press. pp. 209–254.
- Carstensen, L.L.; Isaacowitz, D.M.; Charles, S.T. (1999). "Taking time seriously: A theory of socioemotional selectivity". American Psychologist. 54 (3): 165–181. doi:10.1037/0003-066X.54.3.165. PMID 10199217.
- Dunbar, R.I.M. (January 2018). "The Anatomy of Friendship". Trends in Cognitive Sciences. 22 (1): 32–51. doi:10.1016/j.tics.2017.10.004. ISSN 1364-6613. PMID 29273112. S2CID 31147785.
- Wiener, Judith; Schneider, Barry H. (2002). "A multisource exploration of the friendship patterns of children with and without learning disabilities". Journal of Abnormal Child Psychology. 30 (2): 127–41. doi:10.1023/A:1014701215315. PMID 12002394. S2CID 42157217. Archived from the original on 27 September 2018. Retrieved 26 September 2017.
  - Hoza, Betsy (June 7, 2007). "Peer Functioning in Children With ADHD". Journal of Pediatric Psychology. 32 (6): 101–06. doi:10.1016/j.ambp.2006.04.011. PMC 2572031. PMID 17261489.
  - Bauminger, Nirit; Solomon, Marjorie; Aviezer, Anat; Heung, Kelly; Gazit, Lilach; Brown, John; Rogers, Sally J. (3 January 2008). "Children with Autism and Their Friends: A Multidimensional Study of Friendship in High-Functioning Autism Spectrum Disorder". Journal of Abnormal Child Psychology. 36 (2): 135–50. doi:10.1007/s10802-007-9156-x. PMID 18172754. S2CID 35579739.
  - David-Barrett, Tamas; Rotkirch, Anna; Carney, James; Behncke Izquierdo, Isabel; Krems, Jaimie A.; Townley, Dylan; McDaniell, Elinor; Byrne-Smith, Anna; Dunbar, Robin I. M. (2015-03-16). Jiang, Luo-Luo (ed.). "Women Favour Dyadic Relationships, but Men Prefer Clubs: Cross-Cultural Evidence from Social Networking". PLOS ONE. 10 (3) e0118329. Bibcode:2015PLoSO..1018329D. doi:10.1371/journal.pone.0118329. ISSN 1932-6203. PMC 4361571. PMID 25775258.
  - DeScioli, Peter; Kurzban, Robert (2009-06-03). "The Alliance Hypothesis for Human Friendship". PLOS ONE. 4 (6) e5802. Bibcode:2009PLoSO...4.5802D. doi:10.1371/journal.pone.0005802. ISSN 1932-6203. PMC 2688027. PMID 19492066.
  - DeScioli, Peter; Kurzban, Robert; Koch, Elizabeth N.; Liben-Nowell, David (January 2011). "Best Friends". Perspectives on Psychological Science. 6 (1): 6–8. doi:10.1177/1745691610393979. ISSN 1745-6916. PMID 26162107. S2CID 212547.
  - Jorm, Anthony F. (2005). "Social networks and health: it's time for an intervention trial". Journal of Epidemiology and Community Health. 59 (7): 537–538. doi:10.1136/jech.2004.031559. ISSN 0143-005X. PMC 1757066. PMID 15965132.
  - "Friendships play key role in suicidal thoughts of girls, but not boys". EurekAlert!. Ohio State University. January 6, 2004. Retrieved 26 September 2017.
    - Bearman, Peter S.; Moody, James (2004). "Suicide and Friendships Among American Adolescents". American Journal of Public Health. 94 (1): 89–95. doi:10.2105/AJPH.94.1.89. PMC 1449832. PMID 14713704.
    - Brendgen, M.; Vitaro, F.; Bukowski, W.M.; Dionne, G.; Tremblay, R.E.; Boivin, M. (2013). "Can friends protect genetically vulnerable children from depression?". Development and Psychopathology. 25 (2): 277–89. doi:10.1017/s0954579412001058. PMID 23627944. S2CID 12110401.
      - Bukowski, W.M.; Hoza, B.; Boivin, M. (1994). "Measuring friendship quality during pre- and early adolescence: the development and psychometric properties of the friendship qualities scale". Journal of Social and Personal Relationships. 11 (3): 471–84. doi:10.1177/0265407594113011. S2CID 143806076.
      - Shen, Chun; Rolls, Edmund T; Xiang, Shitong; Langley, Christelle; Sahakian, Barbara J; Cheng, Wei; Feng, Jianfeng (2023-07-03). Whelan, Robert; Büchel, Christian; Whelan, Robert; Schreuders, Lisa (eds.). "Brain and molecular mechanisms underlying the nonlinear association between close friendships, mental health, and cognition in children". eLife. 12 e84072. doi:10.7554/eLife.84072. ISSN 2050-084X. PMC 10317501. PMID 37399053.
        "Is more always better?". eLife. 2023-07-03. Retrieved 2023-07-03.
        Krems, Jaimie; Williams, Keelah; Kenrick, Douglas; Aktipis, Athena (2020-04-28). "Friendship jealousy: One tool for maintaining friendships in the face of third-party threats?". Journal of Personality and Social Psychology. 120 (4): 977–1012. doi:10.31234/osf.io/wdc2q. PMID 32772531. S2CID 221101011.
        Shutt, Kathryn; MacLarnon, Ann; Heistermann, Michael; Semple, Stuart (2007-02-27). "Grooming in Barbary macaques: better to give than to receive?". Biology Letters. 3 (3): 231–233. doi:10.1098/rsbl.2007.0052. ISSN 1744-9561. PMC 2464693. PMID 17327200.
        Zamma, Koichiro (March 2002). "Grooming site preferences determined by lice infection among Japanese macaques in Arashiyama". Primates. 43 (1): 41–49. doi:10.1007/bf02629575. ISSN 0032-8332. PMID 12091746. S2CID 42457072.
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