Expressionist painters explored the bold use of paint surface, drawing distortions and exaggerations, and intense color. Expressionists produced emotionally charged paintings that were reactions to and perceptions of contemporary experience; and reactions to Impressionism and other more conservative directions of late 19th-century painting. The Expressionists drastically changed the emphasis on subject matter in favor of the portrayal of psychological states of being. Although artists like Edvard Munch and James Ensor drew influences principally from the work of the Post-Impressionists they were instrumental to the advent of abstraction in the 20th century.