How do other animals think about the world? Why are their capacities different from (or similar to) our own? We answer these questions by studying the cognition, behavior and physiology of different primate species. We partner with parks, sanctuaries, zoos and research centers to study primate populations living in socially- and ecologically-rich contexts, often semi-free-ranging. To study nonhuman cognition, we design fun games that primates play to get a treat, or show them novel and interesting stimuli to see how they respond. We further collaborate with veterinarians to collect biological samples either voluntarily, or during routine health exams. Our research always prioritizes the welfare and conservation of the primates we work with, many of which are endangered species. We also study the cognition and behavior of humans using the same techniques. To do so, we test people in interactive studies at our lab at the University of Michigan campus, and recruit larger samples of participants in online versions of these same games.
Our research has been supported by the National Science Foundation, the National Institutes of Health, the Leakey Foundation, and the Sloan Foundation.
Evolutionary variation in cognition
Why do some animals solve problems differently from others? A major focus of our research is understanding how variation in cognitive abilities relates to different species’ natural history. We aim to reconstruct human cognitive evolution and understand the evolutionary processes shaping cognition in general.
- De Petrillo, F. & Rosati, A.G. (2019). Ecological rationality: convergent decision-making in apes and capuchins. Behavioural Processes.
- Rosati, A.G. (2017). Foraging cognition: reviving the ecological intelligence hypothesis. Trends in Cognitive Sciences.
- Santos, L.R. & Rosati, A.G. (2015). The evolutionary origins of human decision-making. Annual Review of Psychology.
See all publications about evolutionary variation.
Comparative development and aging
Humans exhibit a distinct life-history pattern compared to other primates, including an extended period of juvenile development and long total lifespan. Studies of comparative development and aging are therefore critical to understand human evolution.
- Rosati, A.G., Arre, A.M., Platt, M.L., & Santos, L.R. (2018). Developmental shifts in social cognition: socioemotional biases across the lifespan in rhesus monkeys. Behavioral Ecology and Sociobiology.
- Rosati, A.G. & Santos, L.R. (2017). Tolerant Barbary macaques maintain juvenile levels of social attention into old age, but despotic rhesus macaques do not. Animal Behaviour.
- Rosati, A.G., Arre, A.M., Platt, M.L., & Santos, L.R. (2016). Rhesus monkeys show human-like changes in gaze following across the lifespan. Proceedings of the Royal Society B.
See all publications about development and aging.
Decision-making and cognitive control
Animals face complex foraging problems such as trading off between costs and benefits and flexibly adjusting their behavior in fluctuating environments. What cognitive skills do primates use to solve these problems, and have humans evolved unique abilities for decision-making and self-control?
- De Petrillo, F. & Rosati, A.G. (2019). Rhesus macaques use probabilities to predict future events. Evolution and Human Behavior.
- Rosati, A.G., DiNicola, L.M., & Buckholtz, J.W. (2018). Chimpanzee cooperation is fast and independent from self-control. Psychological Science.
- Rosati, A.G., & Santos, L.R (2016). Spontaneous metacognition in rhesus monkeys. Psychological Science.
See all publications about decision-making and cognitive control.
Social cognition and cooperation
For gregarious species, social interactions can influence all aspects of daily life. For example, foraging requires competing (or cooperating) with others who are also trying to find food. This component of our research focuses on the skills that primates use to think about others, cooperate with others, or out-compete others.
- Bettle, R. & Rosati, A.G. (2019). Flexible gaze following in rhesus monkeys. Animal Cognition.
- Rosati, A.G., Benjamin, N., Pieloch, K., & Warneken, F. (2019). Economic trust in young children. Proceedings of the Royal Society B.
- Leimgruber, K.L., Rosati, A.G., & Santos, L.R. (2016). Capuchins punish those who have more. Evolution and Human Behavior.
See all publications about social cognition and cooperation.
Spatial memory and navigation
Animals face complex foraging problems such as locating food, remembering the distribution of food across time and space, and navigating between these resources in their environments. What cognitive skills do primates use to solve these problems, do their abilities vary across species, and have humans evolved abilities abilities that allow for uniquely-robust spatial cognition?
- Rosati, A.G. (2019). Heterochrony in chimpanzee and bonobo spatial memory development. American Journal of Physical Anthropology.
- Rosati, A.G. (2015). Context influences spatial frames of reference in bonobos (Pan paniscus). Behaviour.
- Rosati, A. G., Rodriguez, K., & Hare, B. (2014). The ecology of spatial memory in four lemur species. Animal Cognition.
Primate welfare and conservation
Many of the primate species we work with are endangered the wild. For example, all species of nonhuman great apes are endangered due to habitat loss, human encroachment, and the bushmeat and pet trades. We partner with welfare and conservation organizations like the Pan African Sanctuary Alliance (PASA) to address these issues, and further conduct research on how the public perceives the conservation status of primates.
- Stokes, R., Tully, G., & Rosati, A.G. (2018). Pan African Sanctuary Alliance: Securing a future for the African great apes. International Zoo Yearbook.
- Stokes, R., Tully, G., & Rosati, A.G. (2017). Pan African Sanctuary Alliance: Primate welfare, conservation, and research. African Primates.
- Rosati, A. G., Herrmann, E., Kaminski, J., Krupenye, C., Melis, A. P., Schroepfer, K., Tan, J., et al. (2013). Assessing the psychological health of captive and wild apes: A response to Ferdowsian et al. (2011). Journal of Comparative Psychology.
See all publications about welfare and conservation.