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. 2015 Oct 19;6:8693. doi: 10.1038/ncomms9693

Figure 2. Relative average individual donations in the DG and the PGG and tea taken in the RDG for different ethnic groups.

Figure 2

Using linear regression for DG (N=360) (a) and PGG (N=720) (b) and Poisson regression for RDG (N=561) (c) controlled for age and sex, with patrilocal-Pumi (PumiP) as reference. Each bar represents the value relative to the patrilocal-Pumi with age and sex controlled for. Green bars, high FD; blue bars filled with dots, medium FD; red bars filled with backslash, low FD. Error bars indicate the standard error from the mean. Note that high values in the RDG game denote selfishness (taking more tea from the public pot), whereas low values indicate selfishness (less dictator giving and public goods contribution) in the PGG and DG.