AbstractFrom 1940 to 1989 in the USA, suicide and homicide rates were positively associated, as were the year-to-year changes in these rates, in contradiction to an hypothesis made by Enrico Ferri.Get full access to this articleView all access options for this article.Get accessReferences1. Ferri E. L'omicidio-suicidio. Torino, Italy: Bocca, 1883.2. Marra R. Orru M. Social images of suicide. British Journal of Sociology, 1991, 42, 273–288.