David R. Weir is Research Professor in the Survey Research Center of the Institute for Social Research at the University of Michigan, and Director of the NIA-funded Health and Retirement Study. Prior to joining ISR, he was Visiting Associate Professor in the Department of Economics and Research Associate in the Harris School of Public Policy at the University of Chicago, and the recipient of a Special Emphasis Research Career Award in the Economics and Demography of Aging from the National Institute on Aging.

Dr. Roberts received his Ph.D. from University of California Berkeley in 1994 in personality psychology and worked at the University of Tulsa until 1999 when he joined the faculty at the University of Illinois, where he is a Richard and Margaret Romano Professorial Scholar.

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.

Dan Mroczek holds a shared appointment between the School of Medicine and the Psychology Department at Northwestern University since 2013. Previously, he did a postdoc at the University of Michigan from 1992 to 1995. He was then on faculty in the psychology department at Fordham University in New York City from 1995 to 2005. From 2005 to 2013, he was on faculty at Purdue University where he held the Berner Hanley Chair in Gerontology.

Dan P. McAdams is the Chair of the Psychology Department at Northwestern University, Evanston, IL. He is also Professor of Psychology and Professor of Human Development and Social Policy at Northwestern, and he is the Director of the Foley Center for the Study of Lives, which is an interdisciplinary research group funded by the Foley Family Foundation and dedicated to studying personality development in adulthood.

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.

Bart Golsteyn is Professor of Economics at the Department of Macro, International, and Labor Economics at Maastricht University. His research interests are in human capital and social economics.

Golsteyn received an M.Sc. in Economics and Ph.D. in Economics from Maastricht University in 1999 and 2007 respectively.

Dr. William Fleeson is Professor of Psychology at Wake Forest University. He has been associate editor and consulting editor of several leading journals, and has been PI on two separate NIH R01s. His work focuses on examining actual behavior, behavior patterns, and behavior contingencies in order to obtain new insights about personality constructs and to explain the mechanisms and operation of personality constructs, especially moral character and borderline personality disorder.

Dr. Charles S. Carver is a Distinguished Professor of Psychology at the University of Miami. His work addresses a wide range of topics in personality, social psychology, health psychology, and experimental psychopathology. (He is not a dilettante, he is eclectic.) He has been supported by the National Science Foundation, the American Cancer Society, and the National Cancer Institute. He was Editor of the Journal of Personality and Social Psychology's section on Personality Processes and Individual Differences and is now Associate Editor of Psychological Review.