This report summarizes and interprets the discussions at a seminar on artificial intelligence (AI) training domains and knowledge representations which was sponsored by the United Kingdom Training Commission. The following broad areas are addressed: (1) the context, process, and diversity of requirements of training and training needs; (2) defining AI, expert systems, and prospects in AI; (3) the origins, recent approaches, and current research directions in the use of computers to enhance learning; and (4) AI applications in training. Implications for the Training Commission are then considered. A 9-item annotated bibliography is included, and an update of the Training Commission's program and a list of seminar participants are appended. Other publications of the Economic and Social Research Council relating to information technology and education are listed, along with ordering information. (MES)