Position Description: The Lomas Barbudal Capuchin Project has been running for 28 years, and (funding permitting) will continue for many years to come. Each year we accept about 6 interns who stay a full year and participate in data collection. The project currently monitors 10 social groups of monkeys. Virtually all monkeys are well habituated, and their genetic relationships are known, as well as social histories dating back several years in most cases. The primary focus of research during 2019 will be behavioral flexibility across the life span, with a particular focus on innovation and social learning, and the primary subjects will be the surviving members of a longitudinal study of subjects we have followed since their birth in 2001-2004. In addition to collecting data, we are active