R. A. Fisher is perhaps best known for his influential theoretical contributions to the ‘Evolutionary Synthesis’ of the 1930s and 1940s in which biometry was reconciled with Mendelism. It is no accident, I believe, that when historians discuss the ‘Synthesis’, the names R. A. Fisher, Sewall Wright and J. B. S. Haldane are nearly always given in that order. Fisher's 1918 paper ‘The correlation between relatives on the supposition of Mendelian inheritance’ suggested that biometry, which emphasized the distribution of characters (...) based on continuous variation, and Mendelism, which emphasized discontinuous characters, were compatible and could be united to study evolutionary change. If one considered large numbers of discontinuous, Mendelian characters, then statistical biometrical analysis could be conducted. Thus, Fisher argued, biometry and Mendelism need not oppose each other. (shrink)

Scholars have paid great attention to the neo-Darwinism of Ronald Fisher. He was one of the founding fathers of the modern synthesis and, not surprisingly, his writings and life have been widely scrutinized. However, less attention has been paid to his interests in the human sciences. In assessing Fisher’s uses of the human sciences in his seminal book the Genetical Theory of Natural Selection and elsewhere, the article shows how Fisher’s evolutionary thought was essentially eclectic when applied to the human (...) context. In order to understand how evolution works among humans, Fisher made himself also a sociologist and historian. More than a eugenically minded Darwinist, Fisher was also a sophisticated scholar combining many disciplines without the ambition to reduce, simplistically, the human sciences to biology. (shrink)

In this paper we argue that the motif underlying Ronald Aylmer Fisher scientific endeavors was eugenics and the notion of differential fertility. Fisher’s contribution to Neo-Darwinian synthesis and the development of several basic concepts of modern statistics, among others, derived from his interest in providing sound grounds to the hypothesis that the reproduction of the ‘well-born’ ought to be encouraged, while individuals “unfit for civilized society” were to be financially and socially discouraged from bearing children. Fisher believed that all striving (...) notwithstanding, all human societies were doomed to decadence and collapse due to purely biological reasons, being eugenics the only approach likely to prevent such sorry fate. In Fisher’s work statistics, evolution theory, genetics and eugenics form one single logical structure, since all of them directly concern a more general problem, i.e., the biological improvement of humankind. Eugenics did not disappear after the end of World War II, but was reframed at least partially as present-day genetics, including clinical genetic counseling. (shrink)

Ronald Aylmer Fisher is today remembered as a giant of twentieth-century statistics, genetics and evolutionary theory. Alongside his influential scientific contributions, he was also, throughout the interwar years, a prominent figure within Britain's eugenics movement. This essay provides a close examination of his eugenical ideas and activities, focusing particularly upon his energetic advocacy of family allowances, which he hoped would boost eugenic births within the more ‘desirable’ middle and upper classes. Fisher's proposals, which were grounded in his distinctive explanation for (...) the decay of civilizations throughout human history, enjoyed support from some influential figures in Britain's Eugenics Society and beyond. The ultimate failure of his campaign, though, highlights tensions both between the eugenics and family allowances movements, and within the eugenics movement itself. I show how these social and political movements represented a crucial but heretofore overlooked context for the reception of Fisher's evolutionary masterwork of 1930, The Genetical Theory of Natural Selection, with its notorious closing chapters on the causes and cures of national and racial decline. (shrink)