Niels Waller
Niels Waller, Ph.D., Chief Consultant on Quantitative Psychology
Niels Waller, Ph.D., is Professor and chair of Quantitative Psychology at Vanderbilt University. He is interested in the development and application of quantitative models of individual differences. His main areas of expertise are item response theory, taxometric methods, factor analysis, and quantitative genetics. Among numerous other awards, Dr. Waller is a recipient of the 1998/1999 American Psychological Association Distinguished Scientific Award for Early Career Contribution to Psychology in the area of Individual Differences.His work has also focused on the application of computerized adaptive testing to personality and psychotherapy assessment. He has written a program, MicroFact, that allows social scientists to correctly analyze ordered categorical data in large data sets. He recently won a grant to review the Minnesota Multiphasic Personality Inventory (MMPI)--the standard that mental health professionals use to measure psychopathology. Dr. Waller is the author (with Dr. Paul E. Meehl) of Multivariate Taxometric Procedures: Distinguishing Types from Continua (SAGE University Press). He received his Ph.D. from the University of Minnesota.
(Note: Above material regarding Niels Waller taken from Xamplify's website.)