A third solution is to provide and promote harmless, symbolic substitutes for war; but if these really are harmless they will inevitably only go a ve… - Desmond Morris

In discussing all these aggressive and submissive behaviour patterns, it has been assumed that the individuals concerned have been ‘telling the truth’ and have not been consciously and deliberately modifying their actions to achieve special ends. We ‘lie’ more with our words than our other communication signals, but even so the phenomenon cannot be overlooked entirely. It is extremely difficult to ‘utter’ untruths with the kind of behaviour patterns we have been discussing, but not impossible. As I have already mentioned, when parents adopt this procedure towards their young children, it usually fails much more drastically than they realize. Between adults, however, who are much preoccupied with the verbalized information content of the social interactions, it can be more successful. Unfortunately for the behaviour-liar, he typically lies only with certain selected elements of his total signalling system. Others, which he is not aware of, give the game away.

It has been found that this aggressiveness can be increased by raising the density of a group of children. Under crowded conditions the friendly social interactions between members of a group become reduced, and the destructive and aggressive patterns show a marked rise in frequency and intensity. This is significant when one remembers that in other animals fighting is used not only to sort out dominance disputes, but also to increase the spacing-out of the members of a species.

In our own species, over-protected children will always suffer in adult social contacts. This is especially important in the case of only children, where the absence of siblings sets them at a serious initial disadvantage. If they do not experience the socializing effects of the rough-and-tumble of the juvenile play groups, they are liable to remain shy and withdrawn for the rest of their lives, find sexual pair-bonding difficult or impossible and, if they do manage to become parents, will make bad ones.