...situation must involve a conscious attempt by one individual to change the attitudes, beliefs, or behaviour of another individual or group of individuals through the transmission of some message (Bettinghaus & Cody 1987:3). Persuasion designers work with all kinds of verbo-visual representations...

...(1989)". "Those communication situations which involve a conscious attempt by one individual to modify the attitudes, beliefs, or behavior of another individual...individuals through the transmission of some message. . . Those communication situations in which two or more individuals each consciously attempt to modify...