BASIC PREMISE OF THIS REPORT IS THAT INSTRUCTIONAL EFFECTIVENESS MUST BE JUDGED FOR EACH PROGRAM ACCORDING TO ITS DEMONSTRATED MERITS. GENERAL AND SPECIFIC RECOMMENDATIONS ARE LISTED FOR POTENTIAL PROGRAM USERS AND PUBLISHERS. SUPPLEMENTS CONTAIN INFORMATION ON PROGRAM MANUALS AND TECHNICAL DOCUMENTATION. THIS REPORT WAS PREPARED BY THE JOINT COMMITTEE ON PROGRAMMED INSTRUCTION AND TEACHING MACHINES OF THE AMERICAN EDUCATIONAL RESEARCH ASSOCIATION, THE AMERICAN PSYCHOLOGICAL ASSOICATION, AND DEPARTMENT OF AUDIO-VISUAL INSTRUCTION (NATIONAL EDUCATION ASSOCIATION). (LH)