This report documents research and development performed by principal investigators under the sponsorship of the Office of Naval Research Cognitive and Neural Sciences Division during fiscal year 1989. Programs are conducted under contracts and grants awarded on the basis of proposals received in response to a Broad Agency Announcement in the "Commerce Business Daily". Candidate programs are evaluated on the scientific merit of the proposed research, facilities available for its conduct, competence of principal investigators, and relevance to Navy needs. Most of the programs are basic in nature, with a selected augmentation by exploratory development efforts. The Cognitive Science Research Programs include research into the human learner's cognitive architectures and abilities; learning and instruction; model-based measurement; and knowledge, skill, and expertise. The Perceptual Science Research Programs include research into vision and visual attention, audition, haptics and sensory guided motor control, and human factors technology. The Biological Intelligence Research Programs foster research into computation in large neural networks, chemical modulators of information processing, neural processing of sensory information, local neural circuit interaction, marine mammals, and behavioral immunology. The Manpower, Personnel and Training Research and Development Programs are also listed. Program descriptions list each program's title, principal investigator, project code, current end date, objective, approach, progress, and resulting literature. (TJH)