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. Author manuscript; available in PMC: 2015 Apr 1.
Published in final edited form as: Learn Individ Differ. 2013 Oct 1;27:206–212. doi: 10.1016/j.lindif.2013.01.011

Table 4.

Results of Poisson regressions of five domains of traditional ecological knowledge (outcome variable) against birth cohort variables among Tsimane’ adults (n=651). Years 2008-2009.

Food Medicine Firewood Canoe House
building 		Total
Age-group of reference: Elder
Mature −0.014
(0.023)		 −0.090*
(0.056)		 0.008
(0.135)		 0.042
(0.096)		 0.074**
(0.031)		 −0.005
(0.028)
Young −0.067***
(0.020)		 −0.091**
(0.046)		 −0.005
(0.126)		 0.096
(0.085)		 0.077**
(0.033)		 −0.024
(0.027)
Education −0.004
(0.003)		 0.011
(0.006)		 −0.011
(0.018)		 −0.007
(0.014)		 0.008*
(0.004)		 0.001
(0.003)
Joint: Mature
 & Young		 12.38
(0.002)		 4.08
(0.13)		 0.03
(0.97)		 1.62
(0.45)		 6.30
(0.04)		 1.43
(0.49)
***

significant at the ≤1% level.

**

significant at the ≤5% level.

*

significant at the 10% level.

Robust standard errors in parenthesis. All regressions include village dummies to control for village fixed-effects. ‘Joint’ = F statistics of joint statistical significance for age groups (significance level in parenthesis).