Paul Irwing, PhD, is joint chair of The Psychometrics at Work Research Group at Manchester Business School. He is a world-leading psychometrician with over 30 years of experience in research specializing in individual differences and quantifiable measurement through psychometrics.

Tom Booth, PhD, is Senior Lecturer in Quantitative Research Methods, Department of Psychology, University of Edinburgh. His research involves the application and evaluation of psychometric tools in a variety of applied areas, from organizational psychology to epidemiology.

David J. Hughes, PhD, is Lecturer in Organisational Psychology at Manchester Business School. His research interests cover three main areas: the theory and measurement of individual differences, individual differences at work, and individual differences in financial behavior.