The authors tested the Henry & Short hypothesis that there is a tendency to direct aggression toward the environment under conditions of external stress & restraint & toward the self in the absence of such conditions. This hypothesis was tested on a sample of 19, mostly industrialized, countries. The proportion of suicides was regressed on a measure of well-being as well as the proportion of the population in the 15 to 19 year age group. Results seem to provide a mild support for the hypothesis.