The evolutionarily mismatched nature of modern group makeup and the proposed application of such knowledge on promoting unity among members during times of intergroup conflict.

Many modern-day groups differ from prehistoric ones regarding the proportion of members who are related to any particular individual. From an evolutionary mismatch lens, an appreciation of this disparity could help better explain the potential dilution of group cohesion during peacetime and inform novel, more effective approaches to enhancing group unity - strategies that might enhance national security around the globe.