Table 3.
Correlation of cognitive and socio-ecological measures across primate species. Figures are correlation coefficients. EF, rate of extractive foraging; I, rate of innovation; SL, rate of social learning; TD, rate of tactical deception; TU, rate of tool use; DB, dietary breadth; %F, percentage of fruit in diet (typically measured as a percentage of foraging time); GS, social group size. EF, I, SL, TD and TU are corrected for research effort differences. Figures in bold are statistically significant correlations (p < 0.025). See the main text and the electronic supplementary material for details of measures.
| EF | I | SL | TD | TU | DB | %F | GS | |
|---|---|---|---|---|---|---|---|---|
| EF | 1 | 0.60*** | 0.68*** | 0.54*** | 0.74*** | 0.42*** | 0.13 | 0.06 |
| I | 1 | 0.55*** | 0.51*** | 0.56*** | 0.18 | 0.08 | 0.12 | |
| SL | 1 | 0.54*** | 0.69*** | 0.44*** | 0.32*** | 0.12 | ||
| TD | 1 | 0.58*** | 0.36*** | 0.21 | 0.30** | |||
| TU | 1 | 0.28** | 0.24 | −0.05 | ||||
| DB | 1 | 0.40*** | 0.25* | |||||
| %F | 1 | 0.14 | ||||||
| GS | 1 |
*p < 0.025.
**p < 0.01.
***p < 0.001.