The article employs some of the concepts developed by the anthropologist of science studies Bruno Latour to undertake a positive examination of the wide variety of existing psychologies. The purpose is not to judge the scientificity of these psychologies but to understand what led to their dispersion. Some of Latour's concepts are described, such as "circulatory system" (specifying the conditions or internal and external circuits that make science possible) and "modern constitution" (grounded in an attempt to separate nonhumans and humans). These concepts are useful in exploring not only the specificity of psychological knowledge but also its historical possibilities and the effects of contemporary subjectivation.
anthropology of sciences; history of psychology; modernity