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Human Nature

, 22:303 | Cite as

Juvenile Subsistence Effort, Activity Levels, and Growth Patterns

Middle Childhood among Pumé Foragers
  • Karen L. KramerEmail author
  • Russell D. Greaves
Article

Abstract

Attention has been given to cross-cultural differences in adolescent growth, but far less is known about developmental variability during juvenility (ages 3–10). Previous research among the Pumé, a group of South American foragers, found that girls achieve a greater proportion of their adult stature during juvenility compared with normative growth expectations. To explain rapid juvenile growth, in this paper we consider girls’ activity levels and energy expended in subsistence effort. Results show that Pumé girls spend far less time in subsistence tasks in proportion to their body size compared with adults, and they have lower physical activity levels compared with many juveniles cross-culturally. Low activity levels help to explain where the extra energy comes from to support rapid growth in a challenging environment. We suggest that activity levels are important to account for the variation of resource and labor transfers in mediating energy availability.

Keywords

Juvenility Life history Human growth Physical activity levels (PAL) Hunter-gatherers (Foragers) South American Indians Pumé 

Notes

Acknowledgments

Foremost we thank the people of Doro Aná, Yagurí, and Charakotó for their tireless hours of interviews and measurements. We are grateful to Drs. Roberto Lizarralde (Universidad Central de Venezuela), Ted Gragson (University of Georgia, Athens), and Haydée Seijas (Universidad Central de Venezuela) for their previous census research among the Pumé, which is invaluable in establishing the Pumé age estimates. Much appreciation to Dr. Daisy Barreto (Universidad Central de Venezuela) and Kleismer Correa (Salud Indígena) for assisting with Venezuelan research logistics. We thank Oskar Burger and Amanda Veile for their assistance in the data collection. The 2005–2007 research was funded by the National Science Foundation (0349963) and the Milton Foundation. The 1992–1993 Pumé research was funded by the L.S.B. Leakey Foundation and an NSF dissertation improvement grant awarded to Russell Greaves and Lewis R. Binford (DBS-9123875).

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Copyright information

© Springer Science + Business Media, LLC 2011

Authors and Affiliations

  1. 1.Department of Human Evolutionary BiologyHarvard UniversityCambridgeUSA
  2. 2.Peabody Museum of Archaeology and EthnologyHarvard UniversityCambridgeUSA

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