The control treatment (exercise with no scenes) produced a greater improvement in self esteem than the two unpleasant treatments (rural and urban), implying that the latter have a depressive effect on self-esteem relative to exercise alone. Both pleasant treatments, however, produced the greatest increases in self-esteem. In the original Rosenberg study of 2294 participants, mean self-esteem for the population at large was found to be 34.73 on the index. It is possible, therefore, that our population of 100 subjects was starting from a higher base of self-esteem relative to the wider population, and that a cohort selected from the general population would show larger changes in self-esteem with these treatments. Figures 5 to 10 show the changes in the six mood criteria measured with the POMS questionnaire. For each treatment group, mood score following exercise was compared with mood score before exercise using a paired t test. The main findings are as follows: