Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This section needs additional citations for verification. Galdikas utilized statistics and modern data collection to conclude her 1978 doctoral thesis regarding orangutan behavior and interactions. The third 'trimate', Birute Galdikas, spent over 12 years becoming habituated to the orangutans in Borneo, Indonesia. Fossey learned that female gorillas are often transferred between groups and gorillas eat their own dung to recycle nutrients. Additionally, Dian Fossey's work conducted at the Karisoke Research station in Rwanda proved the possibility of habituation among the mountain gorillas. Chimpanzees used tools made from twigs to extract termites from their nests. In 1960, Jane Goodall traveled to the forest at Gombe Stream in Tanzania where her determination and skill allowed for her to observe behaviors of the chimpanzees that no researcher had seen prior. Researchers such as Dian Fossey and Jane Goodall and Birute Galdikas are examples of this. Although there are certain Western primatologists who do more subjective research, the emphasis in this discipline is on the objective.Р”В®arly field primatology tended to focus on individual researchers. Such facilities include the Living Links Center at the Yerkes National Primate Research Center in Georgia, US and the Elgin Center at Lion Country Safari in Florida, US.Р”Р„ll types of primate study in the Western methodology are meant to be neutral. In semi-free ranging studies, scientists are able to watch how primates might act in the wild but have easier access to them, and the ability to control their environments. In lab settings, scientists are able to perform controlled experimentation on the learning capabilities and behavioral patterns of the animals. Laboratory study is done in controlled lab settings. There are three methodological approaches in primatology: field study, the more realistic approach laboratory study, the more controlled approach and semi-free ranging, where primate habitat and wild social structure is replicated in a captive setting.Р”Р‡ield study is done in natural environments, in which scientific observers watch primates in their natural habitat. This allows for data to be unbiased and for the subjects to be uninfluenced by human interference. Either way, the observers must be neutral to their subjects. The general belief is that the scientific observation of nature must be either extremely limited, or completely controlled. It is believed that by understanding our closest animal relatives, we might better understand the nature shared with our ancestors. The focus is on studying the common links between humans and primates. The study of primatology looks at the biological and psychological aspects of non-human primates. Early primate study focused primarily on medical research, but some scientists also conducted 'civilizing' experiments on chimpanzees in order to gauge both primate intelligence and the limits of their brainpower. Western primatology stems primarily from research by North American and European scientists.

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