New modeling paper suggests that the relationship between promiscuity and cooperative breeding cannot be used to distinguish between competing hypotheses

Proceedings of the Royal Society B (Biological Sciences) “Promiscuity and the evolution of cooperative breeding”

This is clearly a paper written to rebut Nowak et al. (2010). But this is also a really valuable paper, as it uses rigorous modeling to show that measures of promiscuity probably will not be capable of distinguishing between competing explanations for cooperative breeding based on kin versus group selection.