Malthus's Vision of the Population Problem in the Essay on Population

In his Presidential address to the American Economic Association, Gary Becker alludes to Thomas Malthus's “great contribution” (1988, p. 1) in a prologue to a wider exploratory discussion of some of the implications for macroeconomics flowing from recent programs in family economics. The content of the contribution as represented here (p. 2) includes diminishing returns to increases in employment “when land and other capital are fixed;” population growth positively related to the wage, the lower population growth at low wages turning on reduced birth rates (the preventive check) and increased death rates (the positive check); and a long-run equilibrium wage at which population is constant at a level determined by the production function. Becker emphasizes the stability of the equilibrium wage in the face of disturbances. A catastrophic reduction in population size (eg. the Black Death) and consequently a wage increase will be followed by positive population growth which restores both the wage and population size to their respective equilibrium levels. In the event of increases in the amount of usuable land, population size will become permanently higher with the wage ultimately reduced to its original long-run level. Becker represents Malthus as reaching “much more pessimistic conclusions about the long-term economic prospects of the average family” than, for example, Godwin and Condorcet who had maintained that the economic position of mankind will continue to improve over time.