“…In a particularly influential study, Easterly and Levine () classify ethnic fragmentation as ‘Africa’s growth tragedy’. A voluminous literature has followed them (for example, Alesina, Michalopoulos, & Papaioannou, ; Ashraf & Galor, ; Desmet, Ortuño‐Ortín, & Wacziarg, ; and Alesina & Ferrara, for a summary), though their main results are questioned by Arcand, Guillaumont, and Jeanneney () and others. One of the arguments to support this view is that different ethnicities mistrust each other and are less likely to create links within social and economic networks: ‘lower trust between diverse ethnic groups makes it difficult to form the social networks (social capital) that promote growth by disseminating advanced technology and economically useful knowledge’ (Easterly, , p. 689).…”