My research investigates how long-term variation in the availability and spatial distribution of foods shapes the social and reproductive ecology of chimpanzees.

Hoffman is a third year PhD student studying male sociality and inter-community variation in the wild chimpanzees of Gombe National Park, Tanzania and Kibale National Park, Uganda.

Haile-Selassie's research interest is understanding the paleobiology and paleoecology of early human ancestors based on the fossil record.