Journal
EVOLUTION AND HUMAN BEHAVIOR
Volume 30, Issue 4, Pages 274-285Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.evolhumbehav.2009.02.001
Keywords
Ethnobotanical knowledge; Transmission of knowledge; Tsimane'; Bolivia; Oblique transmission
Funding
- ICREA Funding Source: Custom
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The modeling of cultural transmission is of great importance for understanding the maintenance, erosion, and spread of cultural traits and innovations. Researchers have hypothesized that, unlike biological transmission, cultural transmission occurs through at least three different, non-mutually exclusive paths: (1) from parents (vertical); (2) from age peers (horizontal); and (3) from older generations (oblique). We used data from 270 adults in a society in the Bolivian Amazon to estimate the association between a person's knowledge and skills and the knowledge and skills of the (1) same-sex parent, (2) age peers (or individuals born in the same village as the subject within +/- 4 years of the subject's year of birth), and (3) parental cohort (excluding parents). We found a statistically significant association between personal and parental and old cohort knowledge. The magnitude of the association is larger for old cohort knowledge than for parental knowledge, suggesting that, for the studied population, the transmission of ethnobotanical knowledge and skills is mostly oblique. (C) 2009 Elsevier Inc. All rights reserved.
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