The raw behavior hasn't changed, but the society has. Three tribes, each with very different norms. Both males and females are mild, parental, and nurturing. Males and females are fierce, oppressive and cannibalistic. Males are catty, wear curls and pretty clothes, love to go shopping.
Females are energetic, managerial, unadorned.
Each of these culture is different from the other. In addition, even in a single society such as the U.S., there are a myriad of subcultures. Add to this the fact that norms change through the years so that what's normative in one generation, may not be in another. We are left with a single society where there are no clear norms that apply across all individuals. This definitional stance implies that normality is the same as conformity to the mainstream, when in fact there are many streams.