Editing Evolutionary psychology (section)

===Social psychology===
As humans are a highly social species, there are many adaptive problems associated with navigating the social world (e.g., maintaining allies, managing status hierarchies, interacting with outgroup members, coordinating social activities, collective decision-making). Researchers in the emerging field of evolutionary social psychology have made many discoveries pertaining to topics traditionally studied by social psychologists, including person perception, social cognition, attitudes, altruism, emotions, [[group dynamics]], [[leadership]], motivation, prejudice, intergroup relations, and cross-cultural differences.<ref>Neuberg, S. L., Kenrick, D. T., & Schaller, M. (2010). Evolutionary social psychology. In S. T. Fiske, D. T. Gilbert, & G. Lindzey (Eds.), Handbook of social psychology (5th Edition, Vol. 2, pp. 761–96). New York: John Wiley & Sons.</ref><ref>Schaller, M., Simpson, J. A., & Kenrick, D. T. (Eds.) (2006). Evolution and social psychology. New York: Psychology Press.</ref><ref>{{cite journal |doi=10.1037/1089-2699.12.1.1 |title=Evolutionary approaches to group dynamics: An introduction |year=2008 |last1=Van Vugt |first1=Mark |last2=Schaller |first2=Mark |journal=Group Dynamics: Theory, Research, and Practice |volume=12 |pages=1–6 }}</ref><ref>Van Vugt, Mark & Kameda, Tatsuya. Evolution and Groups. In J. Levine Group Processes Chapter 12 (2012). New York: Psychology Press.</ref>

When endeavouring to solve a problem humans at an early age show determination while chimpanzees have no comparable facial expression. Researchers suspect the human determined expression evolved because when a human is determinedly working on a problem other people will frequently help.<ref>{{cite web|url=http://www.livescience.com/43875-human-chimpanzee-determination-face.html|title=Humans Evolved 'Game Face' As Plea for Help, Study Suggests|website=[[Live Science]]|date=5 March 2014|access-date=10 August 2016}}</ref>