Robert Hornik Books
Robert C. Hornik is a professor at the Annenberg School for Communication, University of Pennsylvania.
Known for: Public Health Communication: Evidence for Behavior Change
Books by Robert Hornik
Public Health Communication: Evidence for Behavior Change
Public health succeeds or fails not only because of medicine, policy, or technology, but because of communication. In Public Health Communication: Evidence for Behavior Change, Robert Hornik examines a deceptively simple question: when can messages actually change what people know, believe, and do? Rather than treating communication as a vague force for awareness, Hornik approaches it as a field that should be tested, measured, and held accountable for real behavioral outcomes. Drawing on research from media campaigns, community programs, and policy-related communication efforts, he shows that effective public health messaging is neither accidental nor purely creative. It depends on theory, audience insight, strategic design, and rigorous evaluation. The book matters because modern health challenges—from smoking and HIV prevention to vaccination, nutrition, and injury prevention—require population-level behavior change, and communication is often one of the few scalable tools available. Hornik’s authority comes from his long-standing scholarship on media effects and health campaigns, making this book both a research-based guide and a practical framework for anyone trying to use communication to improve public health.
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How Communication Shapes Health Behavior
A health message does not change behavior simply because it is true. It changes behavior only when it reaches people, feels relevant, alters what they think is possible or necessary, and fits the social realities in which decisions are made. Hornik begins by grounding public health communication in ...
From Public Health Communication: Evidence for Behavior Change
Designing Campaigns for Real-World Impact
The difference between a memorable message and an effective campaign is strategy. Hornik emphasizes that public health communication is not just about crafting slogans or attractive visuals; it is about aligning objectives, audience insights, message design, media placement, and implementation logis...
From Public Health Communication: Evidence for Behavior Change
Mass Media Can Shift Population Norms
Mass media rarely changes everyone, but it can change enough people, often enough, to move population behavior. Hornik reviews evidence showing that television, radio, print, and large-scale media campaigns can influence health knowledge, attitudes, perceived norms, and, under the right conditions, ...
From Public Health Communication: Evidence for Behavior Change
Interpersonal Networks Multiply Message Effects
People often trust conversations more than campaigns. One of Hornik’s most important insights is that public health communication does not stop at media exposure; it continues as messages are interpreted, challenged, and reinforced through interpersonal and community networks. Family members, peers,...
From Public Health Communication: Evidence for Behavior Change
Evaluation Separates Hope From Evidence
A campaign that feels persuasive is not necessarily a campaign that works. Hornik insists that public health communication must be evaluated with the same seriousness applied to other public health interventions. Without evaluation, practitioners may confuse visibility with impact, attention with be...
From Public Health Communication: Evidence for Behavior Change
Ethics and Policy Shape Communication Success
Public health communication is never just about persuasion; it is also about power, responsibility, and the public good. Hornik explores the ethical and policy dimensions of health messaging, showing that campaigns operate within larger systems of regulation, institutional trust, and social values. ...
From Public Health Communication: Evidence for Behavior Change
About Robert Hornik
Robert C. Hornik is a professor at the Annenberg School for Communication, University of Pennsylvania. He is known for his research on communication and behavior change, particularly in the context of public health campaigns and media effects.
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Robert C. Hornik is a professor at the Annenberg School for Communication, University of Pennsylvania.
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