The reduction of disability and death from childhood injury can be achieved through structural modifications which make environments less permissive. The structural approach suggests preventive strategies, but the strategies must be used, must not require frequent individual action, and must not depend on the behavior of the children. (VM)

The results of this study are interpreted as being incompatible with theories of sex and violence that stress a single physiological or instinctual factor. They support two-factor theories which give more emphasis to social learning principles than to physiological determinants. (Author)