Keywords: Psychology ; Anthropology ; Social sciences ; Psychology Methodology ; Psychological measurement ; Qualitative Methode ; Ethnische Identität ; Anthropologie ; Indigenes Volk ; Forschungsmethode ; Sozialwissenschaften ; Psychologie ; JMB ; BISAC Subject Heading ; JHBC ; BIC subject category ; JHM ; BIC subject category ; Culturally sustainable field research ; History of transcultural field encounters ; Researchers influence and philosophy of science ; Right to self-determination ; Structural Analysis of Cultural Systems ; The scientist as a psychological being ; United Nations Declaration on the Rights of Indigenous Peoples ; cultural theories and cultural dominance ; ethnography ; legal framework of research in indigenous contexts ; total immersion in indigenous societies ; JMB ; BIC subject category ; Qualitative Methode ; Psychologie ; Anthropologie ; Sozialwissenschaften ; Indigenes Volk ; Anthropologie ; Ethnische Identität ; Forschungsmethode