Marcel Zentner, PhD, is Professor of Psychology at the University of Innsbruck, Austria, and Director of the Personality and Assessment Lab. He is Editor-in-Chief ofFrontiers in Personality and Social Psychology. His main areas of research are personality, temperament, emotion, test development, and music perception.

Rebecca L. Shiner, PhD, is Professor of Psychology at Colgate University and Executive Officer of the Association for Research in Personality. Her research focuses on temperament and personality development in childhood and adolescence, with a particular interest in the pathways through which personality traits contribute to the development of personality disorders and other forms of psychopathology.

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