Vale, G. L., McGuigan, N., Burdett, E., Lambeth, S. P., Lucas, A., Rawlings, B., Schapiro, S. J., Watson, S. K., & Whiten, A. (2021). Why do chimpanzees have diverse behavioral repertoires yet lack more complex cultures? Invention and social information use in a cumulative task. Evolution and Human Behavior, 42(3), https://doi.org/10.1016/j.evolhumbehav.2020.11.003