Like its precursor movements in the modernist avant-garde (Futurism, Cubism, Dada), Surrealism was primarily initiated as an innovation in poetry. The central Surrealist activities were the collaborative experiments in automatic writing, influenced by psychologist Pierre Janet’s Psychic Automatism (1889) and, in poetics, by Pierre Reverdy’s theory of the image as ‘the juxtaposition of two more or less distanced realities’. These experiments, undertaken between 1919 and 1923 by André Breton and his associates (Phillippe Soupault, Louis Aragon, Paul Eluard, Robert Desnos, and others), provide the theoretical basis for Breton’s 1924 ‘Manifesto of Surrealism’, the main tenets of which he would follow consistently for the next forty years.