University Students Skew Global Mental Health Research

A global analysis of survey data reveals that highly educated individuals worldwide are culturally more similar to people from Western nations than to less-educated compatriots. This finding challenges the representativeness of much psychological and mental health research that depends on university students.

Study authors Cindel J. M. White and Michael Muthukrishna analyzed data from 268,992 participants across 95 countries in the World Values Survey (2005-2022). They grouped people by socioeconomic status indicators-education, income, and subjective social class-and measured their cultural distance from the United States as a prototypical Western, educated, industrialized, rich, and democratic (WEIRD) society.

Education Drives Cultural Similarity

The core result was specific to education. Across the globe, groups with high education and secondary education were culturally closer to the U.S. Than low-education groups. This pattern held in 70 percent of analyzed countries. For instance, highly educated individuals in Singapore were as culturally similar to Americans as highly educated Australians. Low-education Singaporeans, however, were culturally distant. The same contrast was found in Russia.

Income and subjective social status did not produce this effect. Cultural similarity to the U.S. Did not differ between high- and low-income groups. The association strengthened when using a broader set of WEIRD nations-including Sweden, Canada, and the UK-as a reference. This suggests educated individuals adopt WEIRD cultural traits generally, not only American ones.

Implications for Mental Health Science

The reliance on WEIRD samples is a long-standing concern in psychology. The new data indicate that using university students, even from non-WEIRD countries, may not solve the problem. "Our results suggest that cross-cultural samples of students or university-educated individuals overrepresent cultural values that are typical of WEIRD countries," the authors concluded.

Education transmits specific values, cognitive styles, and behaviors. Studies link higher education with traits like individualism, analytic thinking, and generalized trust, which are characteristic of WEIRD societies. This means findings on mental health conditions, treatment efficacy, or coping mechanisms drawn from educated samples may not generalize to wider, less-educated populations in the same country.

Limits and Global Patterns

The study noted an important caveat: it was based on self-reported beliefs and behaviors, which may differ from actual daily practices. Researchers excluded any country or group with fewer than 100 respondents, so the number of countries varied between analyses.

A key finding was that education level was not associated with cultural similarity to other large, influential nations like China, Russia, or India. The cultural convergence appears directed specifically toward WEIRD norms, likely driven by historical processes like colonization, globalization, and the spread of Western-style institutions.

The paper, “Higher education predicts global cultural similarity to WEIRD countries,” shows a systematic bias in participant recruitment that affects the global relevance of psychological science.