Standard models of human communication do not highlight differences in message construction and channel use important for effective intercultural exchanges. A chan nel-ratio model of intercultural communication extends the application of the concept of high context/low context cultures and is configured so that it may accommodate the dynamics of a face-to-face interaction. Examples from intercultural focus groups and from the intercultural communication literature show the application of the model. The needs of business people in regard to simplicity, relevance, and completeness have been balanced in the construction of the model. The use of the model as a framework on which the student or business person can organize information is highlighted. Im plications for training and research and in intercultural communications are dis cussed. © 1989, Sage Publications. All rights reserved.