PREFACE, 1. PERCEPTUAL STRUCTURES AND SEMANTIC RELATIONS, 2. PROCESSES OF LEARNING AND COMPREHENSION, 3. SUBJECTIVE PROBABILITY DISTRIBUTIONS FOR IMPERFECTLY KNOWN QUANTITIES, 4. THEORY OF RULE INDUCTION: KNOWLEDGE ACQUIRED IN CONCEPT LEARNING, SERIAL PATTERN LEARNING, AND PROBLEM SOLVING, 5. PROBLEM SOLVING AND RULE INDUCTION: A UNIFIED VIEW, 6. QUOTE THE RAVEN? NEVERMORE!, 7. KNOWLEDGE AND THE EDUCATIONAL PROCESS, 8. UNDERSTANDING WRITTEN PROBLEM INSTRUCTIONS, 9. HOW CAN MERLIN UNDERSTAND?, 10. KNOWLEDGE AND ITS REPRESENTATION IN A SPEECH UNDERSTANDING SYSTEM, 11. MULTIDIMENSIONAL EVALUATION OF A SIMULATION OF PARANOID THOUGHT PROCESSES, 12. UNDERSTANDING UNDERSTANDING SYSTEMS, REFERENCES, AUTHOR INDEX, SUBJECT INDEX