Keeping It in the Family: Lineage Organization and the Scope of Trust in Sub-Saharan Africa
研究发现，在撒哈拉以南非洲，传统社会结构影响信任范围：属于分段世系族群的人对非亲属的信任更低，导致信任范围更窄，且该效应在乡村地区更显著。
We present evidence that the traditional structure of society is an important determinant of the scope of trust today. Within Africa, individuals belonging to ethnic groups that organized society using segmentary lineages exhibit a more limited scope of trust, measured by the gap between trust in relatives and trust in non-relatives. This trust gap arises because of lower levels of trust in non-relatives and not higher levels of trust in relatives. A causal interpretation of these correlations is supported by the fact that the effects are primarily found in rural areas where these forms of organization are still prevalent.