Supported by a critical perspective, this article proposes a theoretical review on the psychological approaches to the human diversity. Firstly, we examine the conceptual evolutions that the notion of diversity has assumed in psychology. Then, we enlist some epistemological proposals consonant to the adopted critical perspective. Finally, we proceed with a systematisation of guiding principles of a critical praxis which both celebrates human diversity and fight against what we suggest as being the "violence of the inexistence", represented by the rejection of the uncountable subjective and relational realities which always characterises us within diversity.
human diversity; critical; psychology; epistemologies