Harvard Project Zero provides a series of technical research reports which study artistic creation and comprehension as a means toward better art education. The emphasis of the research is to improve art education through a better psychological understanding of symbol systems and media of art and through better understanding of the perceptual, motor, and cognitive processes involved in dealing with art. This third technical report in the series studies whether preadolescent children can learn to classify paintings consistently by style or by figure. Subjects at the seven- and ten-year age level were given a pretest, a seven-week training session, and a number of post- and transfer tests. Children at both age levels demonstrated the ability to sort paintings according to a consistent criterion. The older group could more readily alter the basis of its classification and their style sensitivity was not found to be dependent on concrete operational thought. Results of transfer tests given to the experimental and control group indicated that practice in looking at pictures may increase sensitivity to the textural aspects of visual display. (Author/DE)