My research focuses on the use of technology by wild chimpanzees and bonobos. Since 2003, I have been studying the chimpanzees at the Seringbara study site in the Nimba Mountains in Guinea, West Africa. Recently, I have included both East African chimpanzees and bonobos in an intra- and inter-species comparison of ape technology. I seek to illuminate the roles of the environment, sociality and cognition in shaping the use of technology by our closest living relatives, in order to understand the processes that drive the origins and evolution of human material culture. Increasing the awareness of our close evolutionary links with the African apes provides us with the tools to promote the conservation of our endangered cousins.
Fitzgerald, M., Coulson, R., Lawing, M., Matsuzawa, T. and Koops, K. Modeling habitat suitability for chimpanzees (Pan troglodytes verus) in the Greater Nimba Landscape, Guinea, West Africa. Primates 59: 361-375.
Koops, K., Schuppli, C. and van Schaik, C.P. Cultural primatology. In: The International Encyclopedia of Biological Anthropology. Edited by W. Trevathan. John Willey and Sons, Inc.
Wrangham, R.W., Worthington, S., Bernard, A.B., Koops, K., Machanda, Z.P. and Muller, M. Response to: Chimpanzee culture extends beyond matrilineal family units. Current Biology 27: 573-591.
Schuppli, C., Koops, K.and van Schaik, C.P. Cultural behaviour. In: The International Encyclopedia of Primatology. Edited by A. Fuentes. John Wiley and Sons, Inc.
Wrangham, R.W., Koops, K., Machanda, Z.P., Worthington, S., Bernard, A.B., Brazeau, N.F., Donovan, R., Rosen, J., Wilke, C. Otali, E. and Muller, M. Distribution of a chimpanzee social custom is explained by matrilineal relationship rather than conformity. Current Biology 26: 3033-3037.
Van Schaik, C.P., Burkart, J., Damerius, L., Forss, S.I.F., Koops, K., van Noordwijk, M.A. and Schuppli, C. The reluctant innovator: Orangutans and the phylogeny of creativity. Phil. Trans. R. Soc. B. 371: 20150183.
Koops K, Furuichi T, Hashimoto C, van Schaik CP. Sex differences in object manipulation in wild immature chimpanzees (Pan troglodytes schweinfurthii) and bonobos (Pan paniscus): Preparation for tool use? PLoS ONE 10(10): e0139909.
Koops, K., Schöning, C. Isaji, M. and Hashimoto, C. Cultural differences in the length of ant-dipping tools between neighbouring chimpanzee communities at Kalinzu, Uganda. Scientific Reports 5: 12456.
Koops, K., Furuichi T. and Hashimoto, C. Chimpanzees and bonobos differ in intrinsic motivation for tool use. Scientific Reports 5: 11356.
Koops, K., Schöning, C., McGrew, W.C. and Matsuzawa, T. Chimpanzees prey on army ants at Seringbara, Nimba Mountains, Guinea: Predation patterns and tool characteristics. American Journal of Primatology 77: 319-329.
Furuichi, T.*, Sanz, C.*, Koops, K.*, Sakamaki, T., Ryu, H., Tokuyama, N. and Morgan, D. Why do wild bonobos not use tools like chimpanzees do? Behaviour 152: 425-460. *Shared first authors
Hashimoto, C., Isaji, M. Koops, K., Furuichi, T. First records of tool-set use for ant-dipping in eastern chimpanzees in the Kalinzu Forest Reserve, Uganda. Primates 56: 301-305.
Koops, K., Visalberghi, E. and van Schaik, C.P. The ecology of primate material culture. Biology Letters 10: 20140508.
Wilson, M. L., Boesch, C., Furuichi, T., Gilby, I.C., Hashimoto, C., Hobaiter, C.L., Hohmann, G., Itoh, N., Koops, K., Lloyd, J., Matsuzawa, T., Mitani, J.C., Mjungu, D.C., Morgan, D., Muller, M.M., Nakamura, M., Pruetz, J.D., Pusey, A.E., Riedel, J., Sanz, C., Schel, A.M., Simmons, N., Waller, M., Watts, D.P., White, F.J., Wittig, R.M., Zuberbuhler, K. and Wrangham, R.W. Lethal aggression in Pan is better explained by adaptive strategies than human impacts. Nature 513: 414-417.
Koops, K., McGrew, W.C. and Matsuzawa, T. Ecology of culture: Do environmental factors influence foraging tool use in wild chimpanzees (Pan troglodytes verus)? Animal Behaviour 85: 175-185.
Koops, K., McGrew, W.C., Matsuzawa, T. and Knapp, L. Terrestrial nest-building in wild chimpanzees (Pan troglodytes verus): Implications for the tree-to-ground sleep transition in early hominins. American Journal of Physical Anthropology 148: 351-361.
Koops, K., McGrew, W.C., de Vries, H. and Matsuzawa, T. Nest-building by chimpanzees (Pan troglodytes verus) at Seringbara, Nimba Mountains: Anti-predation, thermoregulation and anti-vector hypotheses. International Journal of Primatology 33: 356-380.
Koops, K. Chimpanzees in the Seringbara region of the Nimba Mountains. In: The Chimpanzees of Bossou and Nimba. T. Matsuzawa, T. Humle and Y. Sugiyama (Eds.). Springer, Tokyo, pp. 277-287.
Biro, D., Humle, T., Koops, K., Sousa, C., Hayashi, M. and Matsuzawa, T. Chimpanzee mothers at Bossou, Guinea carry the mummified remains of their dead infants. Current Biology 20: R351-R352.
Koops, K., McGrew, W.C. and Matsuzawa, T. Do chimpanzees (Pan troglodytes) use cleavers and anvils to fracture Treculia africana fruits? Preliminary data on a new form of percussive technology. Primates 51: 175-178.
Möbius, Y., Boesch, C., Koops, K., Matsuzawa, T and Humle, T. Cultural differences in army ant predation by West African chimpanzees? A comparative study of microecological variables. Animal Behaviour 76: 37-45.
Koops, K., Humle, T., Sterck, E.H.M. and Matsuzawa, T. Ground-nesting in the chimpanzees of the Nimba Mountains, Guinea: Environmental or social determinants? American Journal of Primatology 69: 407-419.
Koski, S.E., Koops, K. and Sterck, E.H.M. Reconciliation, relationship quality and post-conflict anxiety: Testing the Integrated Hypothesis in captive chimpanzees. American Journal of Primatology 69: 158-172.
Koops, K. and Matsuzawa, T. Hand clapping by a chimpanzee in the Nimba Mountains, Guinea, West Africa. Pan African News 13: 19-21.