THIS STUDY SOUGHT TO IDENTIFY THOSE PROGRAM CHARACTERISTICS WHICH PRODUCE MAXIMUM LEARNING WITH SELF-TUTORING DEVICES. AIMS OF THE 2-YEAR PROJECT WERE (1) TO DEVELOP PROCEDURES FOR ANALYZING SUBJECT MATTER FOR CONVERTING IT INTO PROGRAMED LEARNING SEQUENCES, AND (2) TO CARRY OUT EXPERIMENTAL COMPARISONS BETWEEN SELECTED VARIATIONS OF PROGRAMED SEQUENCES. THE STUDY WAS COMPOSED OF 9 SEPARATE EXPERIMENTAL PROJECTS CONDUCTED OVER A 2-YEAR PERIOD. THEY ARE (1) DEVELOPMENT OF THE RULEG SYSTEM FOR THE CONSTRUCTION OF PROGRAMED VERBAL LEARNING SEQUENCES, (2) AN INVESTIGATION OF TEACHING MACHINE VARIABLES USING LEARNING PROGRAMS IN SYMBOLIC LOGIC, (3) A STUDY OF THE EFFECTS OF PARTIAL REINFORCEMENT ON BEHAVIOR IN A PROGRAMED LEARNING SITUATION, (4) A COMPARISON OF THREE METHODS OF PROGRAMING SUBJECT MATERIAL FOR AUTOINSTRUCTION, (5) THE APPLICATION OF PROGRAMED LEARNING TECHNIQUES TO SELECTED MATERIAL IN A PROFESSIONAL CURRICULUM (A STUDY OF RETENTION EFFECTS), (6) AN INVESTIGATION OF VISUAL VERSUS AUDITORY PROGRAMING IN TEACHING FOREIGN LANGUAGE PRONUNCIATION, (7) DEVELOPMENT OF A VOCABULARY PROGRAM USING LANGUAGE REDUNDANCY, (8) AN EXPLORATORY EVALUATION OF A DISSEMINATIVE TRANSFER-LEARNING PROGRAM USING LITERAL PROMPTS, AND (9) DEVELOPMENT OF SYMBOLS FOR USE IN THE EDITING OF PROGRAMED LEARNING SEQUENCES. THE IMPLICATIONS OF THE PROJECT POINTED OUT FIVE RESEARCH PROBLEM AREAS IN PROGRAMED LEARNING. (HB)