ABSTRACT
Human nature is such that even the verdict of experience may be biased by the climate of social opinion. Moreover, collective human judgment is not ipso facto infallible. A minority can be right and a majority wrong. Researchers therefore should endeavour to provide evidence which is more objective and this chapter seeks to point out ways in which the evidence might be obtained. In mixed schools there are often feuds between men and women staff, producing nervous tension which may have a bad effect on health. Again, some women cannot control boys, and the indiscipline sometimes causes emotional upsets; in any case the long continued tension is inimical to health. Adults who are anxious and disturbed cannot have a good influence on the personalities of children; individuals function best where the atmosphere is as free as possible of unpleasant tensions.
