In contrast to humanist linguistics, sociobiological approaches consider languages as biologically-based phenomena. European states often found themselves grappling with sociobiological propensities of populations. Controversy surrounding Wilson's sociobiological theories may also have decreased the lasting effect of this book. Sociobiological explanations of human behavior are still controversial. As his sociobiological research developed, he moved to the Jackson Laboratory in Bar Harbor, Maine. Sociobiological research was at the time particularly controversial with regard to its application to humans.