Objectives We investigate whether age profiles of Tsimane forager-horticulturalists' reported skill development are consistent with predictions derived from life history theory about the timing of productivity and reproduction. Previous studies of forager skill development have often focused on...

By systematically examining age patterns in reported acquisition, proficiency, and expertise across a broad range of activities including food production, childcare, and other services, we provide the most complete skill development study of a traditional subsistence society to date. Previous...

We report the results of experiments where in each period of her lifetime the subject must choose how to allocate real earned income between health investment and life enjoyment in each period of a nine-period life in order to maximize aggregate life enjoyment. The key dynamic optimization...

This article examines individual and social influences on investments in health and enjoyment from immediate consumption. We report the results of a lab experiment that mimics the problem of health investment over a lifetime, building on Grossman’s (1972a, 1972b) theoretical framework....