Dr. Wainer received his Ph. D. from Princeton University in 1968. After serving on the faculty of the University of Chicago, a period at the Bureau of Social Science Research during the Carter Administration, and 21 years as Principal Research Scientist in the Research Statistics Group at Educational Testing Service, he is now Distinguished Research Scientist at the National Board of Medical Examiners and Emeritus Professor (adjunct) of Statistics at the Wharton School of the University of Pennsylvania. Dr. Wainer has a long-standing interest in the use of graphical methods for data analysis and communication, robust statistical methodology, and the development and application of generalizations of item response theory. His work on testlet response theory has combined all three. His book , Uneducated Guesses, (Princeton University Press) was published in September 2011, his 19th book, with Lawrence Hubert, A Statistical Guide for the Ethically Perplexed (Chapman & Hall), appeared in August, 2012. His 20th, Medical Illuminations (Oxford University Press) appeared in October of 2013. His latest book, ‪ Truth or Truthiness: Distinguishing Fact from Fiction by Learning to Think like a Data Scientist will be published in 2016 by Cambridge University Press. Dr. Wainer was elected a Fellow in the American Statistical Association in 1985 and a Fellow of the American Educational Research Association in 2009. He was awarded the Educational Testing Service's Senior Scientist Award in 1990 and selected for the Lady Davis Prize and was named the Schonbrun Visiting Professor at the Hebrew University in 1992. He received the 2006 National Council on Measurement in Education Award for Scientific Contribution to a Field of Educational Measurement for his development of Testlet Response Theory and given NCME's career achievement award in 2007, and he received the Samuel J. Messick Award for Distinguished Scientific Contributions Award from Division 5 of the American Psychological Association in 2009 and was included in Who's Who in America, 2009 - 2015 and Who's Who in the World, 2010-2015. In 2013 he received the Lifetime Achievement Award from the Psychometric Society.He was the editor of the Journal of Educational and Behavioral Statistics from 2002 until 2004 and was on the editorial board of Psychological Methods and is a former Associate Editor of the Journal of the American Statistical Association, and Applied Psychological Measurement as well as a former Treasurer of the Psychometric Society. Since 1990 he has written a popular column on data visualization in the statistics magazine Chance.