Discusses relevance and its role in evaluating the effectiveness of information retrieval. Highlights include an information retrieval interaction model; a review of research; evaluation and measurement, including recall and precision and utility and user satisfaction; judges and judgment conditions; user criteria; decision making; and cognitive…

Analysis of the process of educational television evaluation focuses on the Programme Evaluation Analysis Computer (PEAC) system. Highlights include affects of evaluation on learning; internal and external validity; variables in the evaluation model; formative evaluation; cognitive and affective objectives; and differences between general…