We can consider that man and woman are adapting to the different styles of life according to their body then to their primordial abilities. Otherwise the styles are deduced from the different ways of living that one can experiment or observe in our advanced civilization, from documentaries that media are producing about some small isolated peoples (groups), but as well can be confirmed with “The Spirit of Laws” by Montesquieu, and with “The Social Contract” by Rousseau.
The hunters / fishermen / pickers
The easiest group which can be considerable seems to be this one, though in this case at the beginning if the human homes are enough spaced it be not the need to consider a real group (grouping) and the rules seem to not have the need to be very developed in a home, although the apprenticeship to some techniques which could evolve for several generations be natural ; nonetheless a link should be very probably present according to some unavoidable kinship, even if by easiness each home takes a piece of land where it will normally not lack any resource ; moreover the hostility of the environment can already push to form a group in order to hunt, fish and pick, also some conflicts can divide some members of the same family. Thus a level of proximity is occurring quite rapidly what implies some rules in order to avoid the hostilities between human beings and facilitate the formation of couples ; but this kind of society being quite not much developed the considerations are linked at first with the capacity to find some foods easily, so often with the physical capacities ; though the one in order to do weapons and traps be already considerable, but at this level this can come only from the imitation of some encountered facts and not from reflections, intelligence is then not much in demand.
There is as well the option of the move in a group according to seasons and to the move of chase, in this case the group is important because one has to move all the time and one does not know then enough the environment in order to avoid the problems which are coming with ; but this possibility seems less convenient than the other, because more stressful and then normally less practiced.