Paul J LavrakasPaul J. Lavrakas, PhD, is a Research Psychologist and Research Methodologist consultant. He served as Chief Research Methodologist for Nielsen Media Research from 2000-2007. Before joining Nielsen, he was a Full Professor at Northwestern University (978-1996) and Ohio State University (1996-2000), as well as the founding faculty director of the survey centers at both universities. He is the author of Telephone Survey Methods: Sampling, Selection, and Supervision (2nd Edition, SAGE, 1993) and four other books covering election polling and the news media, as well as numerous other methodological and substantive publications and conference papers. Read More Read Less