McDougall does not dispute the thesis as to the collective inhibition of intelligence in groups (p. 41). He says that the minds of lower intelligence bring down those of a higher order to their own level. The latter are obstructed in their activity, because in general an intensification of emotion creates unfavourable conditions for sound intellectual work, and further because the individuals are intimidated by the group and their mental activity is not free, and because there is a lowering in each individual of his sense of responsibility for his own performances. The judgement with which McDougall sums up the psychological behaviour of a simple 'unorganised' group is no more friendly than that of Le Bon. Such a group 'is excessively emotional, impulsive, violent, fickle, inconsistent, irresolute and extreme in action, displaying only the coarser emotions and the less refined sentiments; extremely suggestible, careless in deliberation, hasty in judgment, incapable of any but the simpler and imperfect forms of reasoning; easily swayed and led, lacking in self-consciousness, devoid of self-respect and of sense of responsibility, and apt to be carried away by the consciousness of its own force, so that it tends to produce all the manifestations we have learnt to expect of any irresponsible and absolute power. Hence its behaviour is like that of an unruly child or an untutored passionate savage in a strange situation, rather than like that of its average member; and in the worst cases it is like that of a wild beast, rather than like that of human beings.' (p. 45.) Since McDougall contrasts the behaviour of a highly organised group with what has just been described, we shall be particularly interested to learn in what this organisation consists, and by what factors it is produced. The author enumerates five 'principal conditions' for raising collective mental life to a higher level. The first and fundamental condition is that there should be some degree of continuity of existence in the group. This may be either material or formal; the former, if the same individuals persist in the group for some time; and the latter, if there is developed within the group a system of fixed positions which are occupied by a succession of individuals. The second condition is that in the individual member of the group some definite idea should be formed of the nature, composition, functions and capacities of the group, so that from this he may develop an emotional relation to the group as a whole. The third is that the group should be brought into interaction (perhaps in the form of rivalry) with other groups similar to it but differing from it in many respects. The fourth is that the group should possess traditions, customs and habits, and especially such as determine the relations of its members to one another.