Thank you for visiting nature.com. You are using a browser version with
limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off
compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site
References: Pay-to-stay 26–28, Kin-selection 1, Group augmentation 21.
*Under pay-to-stay dominants are expected to evict unrelated subordinates more readily than related ones if equal amounts of help are provided; however, increased helping rates of non-kin can conceal such differences and may lead to similar eviction rates of related and unrelated subordinates under a coerced helping paradigm, because enhanced helping might compensate for lacking indirect benefits.