This contemporary painting movement emerged within the field of abstraction in the 1940s in the United States, from where it spread worldwide. Rooted in similar premises and postulates as Surrealism, the Abstract Expressionist artists regarded the act of painting as a spontaneous and unconscious activity, a dynamic bodily action divested of any kind of prior planning. The works belonging to this movement are defined by the use of pure, vibrant primary colours that convey a profound sense of freedom. The movement’s main pioneers were, among others, Arshile Gorky (1904-1948) and Hans Hoffman (1880-1966). Leading Spanish exponents of the movement are Esteban Vicente (1903-2001) and José Guerrero (1914-1991), who lived for some time in New York City, where they were in first-hand contact with the many artistic innovations taking place there around that time.