Abstract

A MAJOR PHILOSOPHICAL INTERPRETER of Kant and critic of Herbart and Hegel, Hermann Lotze ( 1817-1881) is known to historians of psychology primarily for his theory of spatial perception.' As Professor of Philosophy at Gottingen University from 1845 to 1880, he published his theory of the physiological mechanism for spatial consciousness no less than six times.2 Standard accounts present his local sign theory as an associationistic, empiricistic, or empiristic view.3 Yet they also mention its influence among nativists such as Lotze's own student Carl Stumpf. Certainly there is an historical irony here which deserves explanation. This paper will describe Lotze's theory, indicate its origins in the work of scientists such as E. H. Weber and Johannes Muiller and philosophers such as Jakob Friedrich Fries and Johann Friedrich Herbart, and trace its transformation at the hands of psycholo- gists of various theoretical persuasions.4 The intent is not to argue for Lotze's personal influence so much as to illustrate how one fertile idea in the history of science can serve as the catalyst for a much broader conceptual development.