bravery. {144}
The psychological significance of the enormous activity of rumour in this war is fairly plain. That rumours spread readily and are tenacious of life is evidence of the sensitiveness to herd opinion which is so characteristic of the social instinct. The gravity of a threat to the herd is shown by nothing better than by the activity of rumour. The strong stimulus to herd instinct produces the characteristic response in the individual of a maximal sensitiveness to his fellows—to their presence or absence, their alarms and braveries, and in no less degree to their opinions. With the establishment of this state of mind the spread and survival of rumours become inevitable, and will vary directly with the seriousness of the external danger. Into the actual genesis of the individual rumours and the meaning of their tendency to take a stereotyped form we cannot enter here.
The potency of rumour in bearing down rational scepticism displays unmistakably the importance of the instinctive processes on which it rests. It is also one of the many evidences that homogeneity