What kind of design did Jane Goodall use?

Jane Goodall primarily used observational research design in her studies of wild chimpanzees in Gombe Stream National Park, Tanzania. This approach involved long-term, immersive fieldwork where she meticulously recorded the behavior, social interactions, and tool use of the chimpanzees without interfering in their natural activities. Her design emphasized qualitative data collection, allowing for a deep understanding of their social structures and environmental interactions.