Cited 9 times since 2010 (0.6 per year) source: EuropePMC Science (New York, N.Y.), Volume 327, Issue 5964, 1 1 2010, Pages 410; author reply 410-1 Studying extant species to model our past. Whiten A, McGrew WC, Aiello LC, Boesch C, Boyd R, Byrne RW, Dunbar RI, Matsuzawa T, Silk JB, Tomasello M, van Schaik CP, Wrangham R