Glenn Sparks, PhD, is a professor and noted researcher of Mass Communication at Purdue University. He previously taught in the Department of Communication at Cleveland State University. His area of expertise is the cognitive and emotional effects of the media. A number of his articles report the results of research on the effects of frightening films and TV programs. More recently, he investigated the effects of programs that depict paranormal themes. He collaborated with "America's Pop Culture Analyst" Dr.