We review theoretical approaches for modelling the origin, persistence and change of social
norms. The most comprehensive models describe the coevolution of behaviours, personal …

Based on a sample of 124 develo** countries over the period 1980–2016, we find that
default increases inequality. This result, which passes a series of robustness tests, is …

With climate change intensifying, building resilience against climate-related shocks is now a
global imperative. Historically, many societies have faced natural hazards, with some …

Despite increased advocacy and investments in mental health systems globally, there has
been limited progress in reducing mental disorder prevalence. In this paper, we argue that …

Direct reciprocity promotes the evolution of cooperation when players are sufficiently equal,
such that they have similar influence on each other. In the light of ubiquitous inequality, this …