础，包括感知、注意力和记忆;和认知的个人和情境差异等。周树华在《媒介心理学》、《传播研究》、《广播和电子媒体学刊》、《新闻和大众传播季刊》、《广告学刊》和《大众传播和社会》等传播学刊发表多篇文章。他还合编了《传播学研究方法》和《延续和改变：新闻和大众传播教育视角》两本著作。2007年，周树华被广东电视艺术家协会评为百名优秀电视主持人之一。
About the authors: SHUHU ZHOU, Ph.D., professor of the College of Communication and Information Sciences at the University of Alabama. His primary research area is human cognition of mediated messages, involving the representation, utilization, and manipulation of information; the basic processes of cognition, including perception, attention and memory; and individual and situational differences in cognition. He has published numerous articles in journals including Media Psychology, Communication Research, Journal of Broadcasting & Electronic Media, Journalism & Mass
Communication Quarterly, Journal of Advertising and Mass Communication & Society. He has also co-edited two volumes, Research methods in communication and continuity and change: Perspectives on journalism and mass communication education. Zhou was recognized in 2007 by the Guangdong TV Artists’ Association as one of the 100 Best TV Hosts for his professional work as anchor and director of the English News program at Guangdong TV, from 1988 to1993.
张雪莹是美国阿拉巴马大学传播与信息学院的博士研究生。她的研究兴趣集中在新媒体效果和健康研究领域。探究人们的健康行为，例如，人们寻求社会支持的努力，搜索和处理健康相关信息的行为，饮食和锻炼行为如何受到人际传播和大众媒体信息的影响。她的研究项目也包括大众媒体对健康危机事件的报道和媒体公信力的研究。
XUEYING ZHANG is a doctoral student in the College of Communication and Information Sciences at the University of Alabama. Her research interests are new media effect and health communication. Her study concerns how health-related behaviors (e.g., social support seeking, health information seeking and process- ing, dieting and exercising behavior, among other topics) could be changed through interpersonal communication as well as mass media use. She is also engaged in research projects of mass media coverage of health-related crisis and audence’s trust on mass media content.
责任编辑：姬德强
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