We argue that the CLASH model makes a number of questionable assumptions about the harshness and unpredictability of low-latitude environments, calling into question the life history strategy approach used, and that it is inconsistent with more nuanced global patterns of violence. We suggest an alternative account for less violence at high latitudes, based on a greater need for cooperation.
Burke, D., Sulikowski, D., Stephen, I., & Brooks, R. (2017). Inconsistent with the data: support for the CLASH model depends on the wrong kind of latitude. Behavioral and Brain Sciences, 40, 16-17. [e80]. https://doi.org/10.1017/S0140525X16001242