This paper presents our reflections as psychological researchers based on a content analysis of studies published in Journal of the New Zealand College of Clinical Psychologists and New Zealand Journal of Psychology over the last decade. We found the frequency of articles that had considered biculturalism, multiculturalism and diversity was related to the scope of the journal and the release of special issues on specific themes (e.g. Indigenous psychologies in 2017). Five issues were identified around the inclusion of cultural diversity in psychological research: inadequate data collection, controlling for diversity, no contextualisation of diversity, pathologisation of diversity and passing responsibility to others. Each issue was succinctly discussed with examples provided. Through this paper, we hope to open up a conversation on how psychological researchers can meet their ethical responsibility to Te Tiriti o Waitangi.