 Dewey’s notion of “experience” evolved over the course of his career. Initially, it contributed to his idealism and psychology. After he developed instrumentalism in Chicago during the 1890’s, Dewey moved to Columbia, revising and expanding the concept in 1905 with a historically significant essay, “The Postulate of Immediate Empiricism” (PIE, MW3). Further developments show up in “The Subject-matter of Metaphysical Inquiry” (1915, MW8) and the “Introduction” to Essays in Experimental Logic (1916, MW10) which consolidated and advanced his view that “experience” was more than just way to rebut subjectivism in psychology, but was also factored into metaphysical accounts of existence and nature (Dykhuizen 1973: 175–76). Dewey advanced this in the1923 Carus Lectures, revised and expanded in his metaphysical magnum opus, Experience and Nature (1925, revised edition, 1929; EN, LW1). Many other significant elaborations on experience follow, notably in Art as Experience (1934b, AE,  LW10).[8]  Because experience is pivotal across his philosophical oeuvre, interested readers should track its functions in other sections of this entry; here, experience is treated concisely, with a focus upon Dewey’s philosophical method and metaphysics.