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This report introduces the Global Collectivism Index (GCI) – a measure covering 99.9% of the earth's population. The GCI includes six sub-scores (e.g., household living arrangements, ingroup favoritism). Collectivism is very high in Sub-Saharan Africa, very low in Western Europe, and intermediate in most other regions. Even after controlling for both national wealth and technological sophistication, national collectivism scores predict variables such as suicide rates, alcohol consumption, agricultural employment, and valuing child obedience. Further, this was true after directly pitting the GCI against several competing predictors of the major cultural outcomes examined in this report. Some competing predictors were national wealth (GDP), modernization, and a popular seven-factor conceptualization of interdependence. The GCI is a much-needed, well-validated, historically updated measure that eliminates previous WEIRD biases and offers greatly increased statistical power in cross-cultural research.
Pelham et al. (Wed,) studied this question.