Visiting scholar William Hallman. The Psychology of Food Risks William K. Hallman is a professor and Chair of the Department of Human Ecology and former Director of the Food Policy Institute at Rutgers, the State University of New Jersey. He is a visiting scholar at APPC for 2016-2017. An expert in risk perception and risk communication, he has written extensively on food safety, food security, and public perceptions of controversial issues concerning food, technology, health, and the environment. Hallman currently serves on a committee of the National Academies of Sciences on the science of science communication, and recently co-authored a handbook on risk communication applied to food safety for the Food and Agriculture Organization of the United Nations and the World Health Organization. Abstract: Using examples from a diverse set of research projects involving public perceptions of food risks, we’ll explore factors that make communicating about food risks so difficult.