Dr. Wainer is an award-winning American statistician and research scientist. His specialization is the use of graphical methods for data analysis and communication, robust statistical methodology, and the development and application of generalizations of item response theory.

After serving on the faculty of the University of Chicago, a period at the Bureau of Social Science Research during the Carter Administration, Dr. Wainer served for 21 years as Principal Research Scientist in the Research Statistics Group at Educational Testing Service. He recently retired from his position as Distinguished Research Scientist at the National Board of Medical Examiners.

Over the course of his career, Dr. Wainer has authored or co-authored more than 20 books, the latest of which is A History of Data Visualization and Graphic Communication, co-authored with Michael Friendly.

In addition to his work with LearningRx, Dr. Wainer is also a member of the Scientific Advisory Board for the Gibson Institute of Cognitive Research.