Abstract

The essay has three parts, with the first two introductory to the third. The first part explores the ideas of several modem philosophers about imagery and imagination and their relationship to language and communication. The second part reviews contemporary theories of mental imagery and verbal processes as derived from empirical studies in cognitive psychology. The final section synthesizes the ideas of the philosophers and psychologists and relates them to the rhetorical concept of persona, with examples. The examples I will use in the final section will deal with imagery in composing exposition, specifically argument and persuasion. The processes of imagery and imagination involved in depicting character and action or composing vivid description, while interesting in their own right, are more obvious. Donald Murray cites numerous poets and fiction writers who testify that imagery is not only the motivation but the vehicle of their composing (Write 59-60). To show that imagination is basic to all composing, I will avoid the narrative and poetic and steer into realms where demonstration is more subtle.