Thus the group appears to us as a revival of the primal horde. Just as primitive man virtually survives in every individual, so the primal horde may arise once more out of any random crowd; in so far as men are habitually under the sway of group formation we recognise in it the survival of the primal horde. We must conclude that the psychology of the group is the oldest human psychology; what we have isolated as individual psychology, by neglecting all traces of the group, has only since come into prominence out of the old group psychology, by a gradual process which may still, perhaps, be described as incomplete. We shall later venture upon an attempt at specifying the point of departure of this development.
Further reflection will show us in what respect this statement requires correction. Individual psychology must, on the contrary, be just as old as group psychology, for from the first there were two kinds of psychologies, that of the individual members of the group and that of the father, chief, or leader. The members of the group were subject to ties just as we see them to-day, but the father of the primal horde was free. His intellectual acts were strong and
sexual act, in which a third person is at the best superfluous and in the extreme case is condemned to a state of painful expectancy. As to the reaction of the sexual need (for genital gratification) towards, gregariousness, see below.