Public communication campaigns have achieved a varied record of success in influencing health and prosocial behavior as reflected by the diverse array of cases cited in this book. Designing and implementing effective campaigns requires a disciplined approach where the campaign team performs a thorough situational analysis, develops a theory-based but pragmatic strategic plan, and implements the creation and placement of messages in accordance with principles of effective media campaign practices. Moreover, diligent efforts are needed to enhance the working relationship between campaign designers and evaluators versus creative professionals who translate concepts in messages. A key role of the strategist in the collaborative process is to develop a framework for setting specifications and providing feedback as messages are prepared. Using a research-based approach in the public service domain is challenging when the mind-set of personnel in sponsoring organizations entails rigid advocacy of unpalatable, ideal behavior, devotion to politically correct message content, and self-indulgent artistic expression. Furthermore, specialists in domains such as health, environment, or altruism aren't always conscious of the fact that they differ substantially from their audiences in topical knowledge, values, priorities, and level of involvement, so they lack the perspective of the "average" person. Research data from samples of the intended audiences can help overcome the gulf between sender and receiver (see Dervin & Foreman-Wernet, Chapter 10). Over the life of a campaign, evaluation research encompasses collection of information about audiences at the formative stage, followed by process evaluation to assess implementation as the campaign unfolds, and finally summative evaluation to track campaign impact (see Valente & Kwan, Chapter 6; Salmon & Murray-Johnson, Chapter 7). Formative evaluation research inputs can enhance campaign effectiveness by guiding the development of sophisticated strategies and effective messages. This preliminary phase of research is useful for determining which approaches are most promising and for revealing whether certain components are ineffective or even counterproductive. According to Palmer (1981), DESIGN AND EVALUATION 54 formative research provides data and perspectives to improve messages during the course of creation. He divides this type of evaluation into two phases. The first involves preproduction research, "in which data are accumulated on audience characteristics that relate importantly to the medium, the message, and the situation within which the desired behavior will occur" (p. 227). The second type of formative research is production testing, also known as pretesting, in which draft prototype messages are evaluated to obtain audience reactions prior to final production. Public communication campaigners increasingly utilize elaborate formative evaluation techniques, particularly for major campaigns sponsored by government agencies, foundations, and organizations promoting health...