Abstract
In any situation in which a written communication is produced, eight variables and three processes are present. The variables are the occasion, the author, the subject, the purpose, the supporting facilities, time, the communication itself, and the recipient. The processes are the preparation, transmission, and consideration and use of the communication. The success of the communication is governed largely by the effectiveness with which the author evaluates the situation and produces a communication appropriate to the attainment of his purposes within it. Fortuitous circumstances beyond the control of the author (and of which he may be unaware) may affect the likelihood that the communication will be successful.