The effectiveness of training procedures which used visual-visual arbitrary matching, blocked-trial matching-to-sample, and successive discrimination training to teach visual-visual discrimination of two-dimensional forms was evaluated with two men having severe mental retardation. Results indicated that the procedures did establish conditional…

This is the fifth in a series of technical research reports by Harvard Project Zero which study artistic creation and comprehension as a means toward better art education. The three papers in this report all concern the bearing of projective geometry on the perceptual processes by which pictures are "read" for spatial information. The…

This study compares effects of an early childhood instructional program--designed to develop auditory and visual perception skills by stressing differential diagnosis, prescriptive suggestions and concomitant procedures--with programs typically found in nursery schools. Treatment group consisted of twelve paired on intelligence, auditory and…