Culture and Psychological Responses to Environmental Shocks: Cultural Ecology of Sidama Impulsivity and Niche Construction in SW Ethiopia
Abstract Sidama people occupy a subsistence niche partitioned between traditional enset agropastoralism and transitional maize farming. Enset production is low-risk and requires multiple years for cultivation and processing. Maize farming is high-risk, high-yield requiring only one growing season from planting to harvest. Contrasting enset and maize farming we examine effects of crop loss and social shocks on Sidama impulsivity. We argue that impulsivity is a psychological process that is differentially activated by environmental shocks in the stable, traditional enset regime and unstable, transitional maize regime. Using a robust psychometric model derived from Barratt Impulsivity Scale (BIS) items we demonstrate two dimensions of Sidama impulsivity: Careful-Control [CC] and Acts Without Thinking [AWT]. Both dimensions are associated with environmental shocks, but the associations are moderated by social ecological regimes. In the enset regime, effects of shocks on impulsivity ar