Three Generations of Tsimane (IMAGE) Santa Fe Institute Caption In an article that appears in the current issue of Evolutionary Anthropology, researchers synthesize over 15 years of theoretical and empirical findings from long-term study of the Tsimane forager-farmers. In they find productivity and social status peak long after physical strength. Credit Paul Hooper Usage Restrictions Credit Paul Hooper License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.