We examined subjects' ability to judge the soundness of informal arguments. The argument claims matched or did not match subject beliefs. In all experiments subjects indicated beliefs about spanking and television violence in a prescreening. Subjects read one-sentence arguments consisting of a claim followed by a reason and then judged the…

Three experiments tested the application to art of an hypothesis from the concept attainment literature, that conceptual learning is enhanced by providing multiple examples prior to test trials. Subjects were given discrimination tasks involving surrealistic and non-surrealistic paintings. The feature abstraction model proved inadequate in this…

Six experiments examined the problem-solving behavior of normal and mentally retarded (MR) children with a two-choice discrimination learning situation: the effects of stimulus similarity upon types of solutions utilized by MR children; the role of redundant cues in the discrimination learning of MR subjects with differing mental ages; the…