The MHC-SF Travels: 1,050 Setswana-Speaking South Africans (Keyes et al., 2008)

The Question

Does Keyes' three-factor model of flourishing (emotional, social, psychological well-being) survive translation into a non-Western language and a different cultural context?

What They Found

• The three-factor structure replicated cleanly in Setswana speakers, supporting the universality of Keyes' emotional, social, and psychological well-being subscales
• Internal reliability was acceptable, with overall Cronbach's alpha at 0.74, lower than Western samples but still adequate for research use
• Roughly 20% of the sample qualified as flourishing, with the rest split between moderate and languishing, comparable to the US distribution Keyes reported in 2002
• Flourishing tracked with better self-rated health and lower symptoms of common mental disorders, mirroring the pattern from Western samples and reinforcing the two-continua model
• The MHC-SF distinguished mental health from mental illness as a separate dimension, not just an inverse, in this non-Western context

How They Tested It

• Translated the MHC-SF into Setswana through a forward-back translation process with native-speaker review
• Surveyed 1,050 adults from the North West Province of South Africa as part of a broader study on health and well-being in Setswana communities
• Ran confirmatory factor analysis to test the three-factor structure against single-factor alternatives in this new language and population
• Cross-checked MHC-SF scores against measures of mental illness symptoms and self-rated physical health to confirm the two-continua pattern

Caveats

• The social well-being subscale loaded less strongly than emotional or psychological well-being, a recurring weakness across the MHC-SF replication literature
• One Setswana sample doesn't cover the full diversity of non-Western contexts; later replications in East Asia, the Middle East, and Latin America were needed to round out the picture
• The study is cross-sectional, so it shows that the structure holds, not that interventions move people up the continuum in this population