Wassily Kandinsky (1866–1944) was a Russian painter and art theorist, and is credited as painting the first purely abstract works. A teacher at the Bauhaus school of Art and Architecture, he had long been interested in the correlation between colour and form. He tested his theories by presenting new students of the Bauhaus with a questionnaire.
The concept is simple — three elemental geometric shapes: square, circle, and triangle to be matched to three primary colours: red, blue, and yellow.
Take the questionnaire (approximately one minute).