This volume contains 19 essays on current research in representative areas of psychology. All of the authors are professors and researchers at universities in the United States. A wide range of topics is discussed. Included among these are human learning and memory; behavioral decision theory; categorization of natural objects; developmental psychology; cochlear physiology; graphical data analysis; child psychopathology; counseling psychology; mass communication effects; attitude and attitude change; clinical psychology; creativity, intelligence and personality; visual neural development; motivation; early visual perception; test theory and methods; and instructional psychology. The volume concludes with author and subject indexes, a cumulative index of chapter titles and authors for volumes 28-32, and a list of chapter titles planned for volume 33 in 1982. (Author/RM)