Online research in philosophy

Presenting a critical history of the philosophy of science in the twentieth century, focusing on the transition from logical positivism in its first half to the ...

Operational definitions were a neo-Machean development that connected with the positivism of Logical Positivism. Logical Positivism failed, with the failure of operational definitions being just one of multiple and multifarious failures of Logical Positivism more broadly. Operationalism, however, has continued to seduce psychology more than half a century after it was repudiated by philosophers of science, including the very Logical Positivists who had first taken it seriously. It carries with it a presupposed metaphysics that is false in virtually all of its particulars, and thereby distorts and obscures genuine issues concerning the nature of theory and of science. It makes it particularly difficult for psychologists, under the thrall of this dogma, to free themselves from these false presuppositions, and to think about, create, and critique genuine scientific theory and process. That is the tragedy of operationalism.

According to the standard account, logical positivism was the philosophical foundation of psychological neo-behaviorism. Smith (1986) has questioned this interpretation, suggesting that neo-behaviorism drew its philosophical inspiration from a different tradition, one more in keeping with naturalistic epistemology. Smith does not deny, however, the traditional interpretation of the philosophy of logical positivism, which sets it apart from naturalistic epistemology. In this article I suggest (following recent historical scholarship) that a more careful reading of the leading figure of logical positivism, Rudolph Carnap, shows an important naturalistic component in his philosophy. Hence, we must reevaluate our standard interpretation of the philosophy of logical positivism and its relation to psychological neo-behaviorism.

In this collection of essays one of the preeminent philosophers of science writing today offers a reinterpretation of the enduring significance of logical positivism, the revolutionary philosophical movement centered around the Vienna Circle in the 1920s and '30s. Michael Friedman argues that the logical positivists were radicals not by presenting a new version of empiricism (as is often thought to be the case) but rather by offering a new conception of a priori knowledge and its role in empirical knowledge. This collection will be mandatory reading for any philosopher or historian of science interested in the history of logical positivism in particular or the evolution of modern philosophy in general.