Homo Economicus - Criticisms

Criticisms

Homo economicus bases his choices on a consideration of his own personal "utility function".

Consequently, the homo economicus assumptions have been criticized not only by economists on the basis of logical arguments, but also on empirical grounds by cross-cultural comparison. Economic anthropologists such as Marshall Sahlins, Karl Polanyi, Marcel Mauss or Maurice Godelier have demonstrated that in traditional societies, choices people make regarding production and exchange of goods follow patterns of reciprocity which differ sharply from what the homo economicus model postulates. Such systems have been termed gift economy rather than market economy. Criticisms of the homo economicus model put forward from the standpoint of ethics usually refer to thís traditional ethic of kinship-based reciprocity that held together traditional societies.

Economists Thorstein Veblen, John Maynard Keynes, Herbert A. Simon, and many of the Austrian School criticise Homo economicus as an actor with too great of an understanding of macroeconomics and economic forecasting in his decision making. They stress uncertainty and bounded rationality in the making of economic decisions, rather than relying on the rational man who is fully informed of all circumstances impinging on his decisions. They argue that perfect knowledge never exists, which means that all economic activity implies risk. Austrian economists rather prefer to use as a model tool the Homo agens.

Empirical studies by Amos Tversky questioned the assumption that investors are rational. In 1995, Tversky demonstrated the tendency of investors to make risk-averse choices in gains, and risk-seeking choices in losses. The investors appeared as very risk-averse for small losses but indifferent for a small chance of a very large loss. This violates economic rationality as usually understood. Further research on this subject, showing other deviations from conventionally-defined economic rationality, is being done in the growing field of experimental or behavioral economics. Some of the broader issues involved in this criticism are studied in Decision Theory of which Rational Choice Theory is only a subset.

Other critics of the Homo economicus model of humanity, such as Bruno Frey, point to the excessive emphasis on extrinsic motivation (rewards and punishments from the social environment) as opposed to intrinsic motivation. For example, it is difficult if not impossible to understand how Homo economicus would be a hero in war or would get inherent pleasure from craftsmanship. Frey and others argue that too much emphasis on rewards and punishments can "crowd out" (discourage) intrinsic motivation: paying a boy for doing household tasks may push him from doing those tasks "to help the family" to doing them simply for the reward.

Another weakness is highlighted by sociologists, who argue that Homo economicus ignores an extremely important question, i.e., the origins of tastes and the parameters of the utility function by social influences, training, education, and the like. The exogeneity of tastes (preferences) in this model is the major distinction from Homo sociologicus, in which tastes are taken as partially or even totally determined by the societal environment (see below).

Further critics, learning from the broadly-defined psychoanalytic tradition, criticize the Homo economicus model as ignoring the inner conflicts that real-world individuals suffer, as between short-term and long-term goals (e.g., eating chocolate cake and losing weight) or between individual goals and societal values. Such conflicts may lead to "irrational" behavior involving inconsistency, psychological paralysis, neurosis, and/or psychic pain. Further irrational human behaviour can occur as a result of habit, laziness, mimicry and simple obedience.