Solving the puzzle of human warfare requires an explanation of battle raids and cultural institutions.
National Institute for Mathematical and Biological Synthesis, University of Tennessee, Knoxville, TN 37996-3410; mrz1@nimbios.org.
Matthew Ryan
http://orcid.org/0000-0002-8356-8739
MR
Zefferman
Department of Anthropology, Stanford University, Stanford, CA 94305-2034; and.
Ryan
R
Baldini
School of Human Evolution and Social Change, Arizona State University, Tempe, AZ 85287.
Sarah
S
Mathew
D000818:Animals; D005006:Ethnicity / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D012098:Reproduction; D014857:Warfare