Transnational psychology

[1][2][3] Transnational psychologists partner with members of local communities to examine the unique psychological characteristics of groups without regard to nation-state boundaries.

Arnett (2008) pointed out that psychologists have no grounds for assuming psychological processes are universal and generalizing research findings to the rest of the global population.

[9] Henrich, Heine, and Norenzayan (2010) noted that although only 1/8 of people worldwide live in regions that fall into the WEIRD (western, educated, industrialized, rich and democratic) societal classification, 60–90% of psychology studies are performed on participants from these areas.

[9][11][12] In 2018, Rad, Martingano & Ginges stated that nearly a decade after Henrich et al.'s paper, over 80% of the samples used in studies published in the journal, Psychological Science, were from the WEIRD population.

Their analysis also showed that several studies did not fully disclose the origin of their samples, and the authors offer a set of recommendations to editors and reviewers to reduce the WEIRD bias.