0 Derr, R. L. 1985 Concept of information in ordinary discourse INFO. PROC. MANAGE 21 489-500 communication (thought transfer),discourse analysis,hypothesis testing,information science,literature reviews,sentences The concept of information as it is used in ordinary discourse is elucidated, using philosophical methods of conceptual analysis. Five essential and four derivative properties of the phenomena of information are identified. This information concept is contrasted with several proposed concepts in information theory literature, communication theory, and information science. (Author)