After reading Chapters 11&12 answer the following:
2 Source credibility is a major factor in communication—and who might be more credible than a physician. Physicians were once utilized in advertising cultural values and attitudes have changed.
Please watch this video of an advertisement for Camels cigarettes.
More Doctors Smoke Camels Than Any Other Cigarette
https://www.youtube.com/watch?v=gCMzjJjuxQI