Ben Domingue is an assistant professor in the Graduate School of Education at Stanford University. He has two areas of active research. The first focuses on statewide standardized test scores and their uses, particularly how test scores are used in statistical models that evaluate the effectiveness of teachers and schools. On a technical level, he also is interested in the extent to which test scores and the data from which they are drawn demonstrate certain desirable properties. The second area of research focuses on the integration of genetic data into social science research.

William Revelle has been a professor of psychology at Northwestern University since 1973 where he directs the graduate program in personality psychology. He has been chairman of the department of psychology for 9 years. His teaching and research emphasizes that personality is the last refuge of the generalist in psychology and that personality theorists need to collaborate with cognitive, social, clinical and biologically oriented psychologists as well as economists, political scientists and statisticians.

Robert F. Krueger, Ph.D., is Hathaway Distinguished Professor in the Department of Psychology at the University of Minnesota. He completed his undergraduate and graduate work at the University of Wisconsin, Madison, and his clinical internship at Brown University. Professor Krueger's major interests lie at the intersection of research on personality, psychopathology, disorders of personality, psychometrics, and behavior genetics.