naa a22 4500 510773915 CHVBK 20180411083224.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s12110-013-9174-z doi (NATIONALLICENCE)springer-10.1007/s12110-013-9174-z Do Birds of a Feather Flock Together? [Elektronische Daten] The Relationship between Similarity and Altruism in Social Networks [Oliver Curry, Robin Dunbar] Cooperation requires that individuals are able to identify, and preferentially associate with, others who have compatible preferences and the shared background knowledge needed to solve interpersonal coordination problems. The present study investigates the nature of such similarity within social networks, asking: What do friends have in common? And what is the relationship between similarity and altruism? The results show that similarity declines with frequency of contact; similarity in general is a significant predictor of altruism and emotional closeness; and, specifically, sharing a sense of humor, hobbies and interests, moral beliefs, and being from the same area are the best predictors. These results shed light on the structure of relationships within networks and provide a possible checklist for predicting attitudes toward strangers, and in-group identification. Springer Science+Business Media New York, 2013 Cooperation nationallicence Altruism nationallicence Emotional closeness nationallicence Similarity nationallicence Homophily nationallicence Social networks nationallicence Curry Oliver Institute of Cognitive and Evolutionary Anthropology, University of Oxford, 64 Banbury Road, OX2 6PN, Oxford, UK aut Dunbar Robin Department of Experimental Psychology, University of Oxford, South Parks Road, OX1 3UD, Oxford, UK aut Human Nature Springer US; http://www.springer-ny.com 24/3(2013-09-01), 336-347 1045-6767 24:3<336 2013 24 12110 https://doi.org/10.1007/s12110-013-9174-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12110-013-9174-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Curry Oliver Institute of Cognitive and Evolutionary Anthropology, University of Oxford, 64 Banbury Road, OX2 6PN, Oxford, UK aut NATIONALLICENCE 700 1- Dunbar Robin Department of Experimental Psychology, University of Oxford, South Parks Road, OX1 3UD, Oxford, UK aut NATIONALLICENCE 773 0- Human Nature Springer US; http://www.springer-ny.com 24/3(2013-09-01), 336-347 1045-6767 24:3<336 2013 24 12110 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer