Abstract artists would have a feeling inside them that would make them want to draw something. They don't research it. They feel something, and draw it right then and there. You can't research your own feelings. If you try to research the feeling, you might loose it.
Abstract artists draw their pictures spontaneously.
Following World War ll, abstract expressionists including Jackson Pollok, Mark Rothko, and Barnett Newman, enlarged their canvases to a mural size painting. They thought that it would give the public a better idea of what they thought. Minimalists of the 1960's such as Robert Morris and Donald Judd took abstract art to a different level, making the pictures seem more fufilled and had a different meaning that was made in the generation before. Artists in the later 1960's and the 1970's are often reffered to as postminimalsts. They draw things that don't exist.