There is nothing WEIRD about basic research: The critical role of convenience samples in psychological science.

Attention to issues of sample diversity and generalizability has increased dramatically in the past 15 years, as psychological scientists have confronted the limitations of relatively homogeneous samples. Though this reckoning was perhaps overdue and has undoubtedly shined a light on some poor research practices, recommendations surrounding sample diversity are sometimes applied to research that does not aim for generalizability across peoples. In this article, I seek to promote discussion about when and why sample diversity and generalizability matter. In doing so, I address problems with language surrounding generalizability, the broader question of generalizability beyond samples, challenges for determining sufficient generalizability, and the inherent question of moderation in psychological science, given the reality of limited time and resources. I then discuss the important roles that basic research plays in understanding group differences, producing generalizable knowledge, and developing applied interventions. Finally, I address issues of equity surrounding sample diversity, emphasizing the distinction between WEIRD samples and convenience samples and the importance of convenience samples for globalizing psychological science. (PsycInfo Database Record (c) 2025 APA, all rights reserved).