A. Leo Beem, PhD, Department of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands

Jamil Bhanji, BS, Department of Psychology, Stanford University, Stanford, California

Dorret I. Boomsma, PhD, Department of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands

Turhan Canli, PhD, Graduate Program in Genetics and Department of Psychology, Stony Brook University, Stony Brook, New York

Danielle C. Cath, MD, Department of Psychiatry, Vrije Universiteit, Amsterdam, The Netherlands

Silvana Chiavegatto, PhD, Department and Institute of Psychiatry and Laboratory of Genetics and Molecular Cardiology, Heart Institute, University of Sao Paulo Medical School, Sao Paulo, Brazil

Rebecca E. Cooney, BA, Department of Psychology, Stanford University, Stanford, California

Richard A. Depue, PhD, Laboratory of Neurobiology of Temperament and Personality, Department of Human Development, Cornell University, Ithaca, New York

Thalia C. Eley, PhD, Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, King's College London, London, United Kingdom

Don C. Fowles, PhD, Department of Psychology, University of Iowa, Iowa City, Iowa

Nathan A. Gillespie, PhD, Virginia Institute of Psychiatric and Behavioral Genetics, Richmond, Virginia

Samuel D. Gosling, PhD, Department of Psychology University of Texas at Austin, Austin, Texas

Ian H. Gotlib, PhD, Department of Psychology, Stanford University, Stanford, California

Stephan Hamann, PhD, Department of Psychology, Emory University, Atlanta, Georgia

Ahmad R. Hariri, PhD, Department of Psychiatry, Western Psychiatric Institute and Clinic, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania

John D. Herrington, MPhil, Wisconsin Psychiatric Institute and Clinics, Madison, Wisconsin

Wendy Heller, PhD, Department of Psychology and Beckman Institute, University of Illinois at Urbana-Champaign, Champaign, Illinois

Jutta Joormann, PhD, Department of Psychology, Stanford University, Stanford, California

James E. King, PhD, Department of Psychology, University of Arizona, Tucson, Arizona

Marisa Knight, BA, Department of Psychology, University of California, Santa Cruz, California

Brian Knutson, PhD, Department of Psychology, Stanford University, Stanford, CA

Nancy S. Koven, PhD, Department of Psychology, University of Illinois at Urbana-Champaign, Champaign, Illinois

Jennifer Y. F. Lau, BSc, Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, King's College London, London, United Kingdom

Klaus-Peter Lesch, MD, Department of Psychiatry and Psychotherapy, University of Würzburg, Würzburg, Germany

Nicholas G. Martin, MD, Queensland Institute of Medical Research, Brisbane, Queensland, Australia

Mara Mather, PhD, Department of Psychology University of California, Santa Cruz, California

Pranjal H. Mehta, BA, Department of Psychology, University of Texas at Austin, Austin, Texas

Christel M. Middeldorp, MD, Departments of Biological Psychology and Psychiatry, Vrije Universiteit, Amsterdam, The Netherlands

Gregory A. Miller, PhD, Departments of Psychology and Psychiatry and Beckman Institute, University of Illinois at Urbana-Champaign, Champaign, Illinois

Kelly L. Minor, PhD, Department of Psychology, Stanford University, Stanford, California

Robert Plomin, PhD, Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, King's College London, London, United Kingdom

Rajita Sinha, PhD, Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut

Mireille van den Berg, PhD, Department of Biological Psychology, Vrije Universiteit, Amsterdam, The Netherlands

Richard van Dyck, MD, Department of Psychiatry, Vrije Universiteit, Amsterdam, The Netherlands

Essi Viding, PhD, Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, King's College London, London, United Kingdom

Alexander Weiss, PhD, Department of Psychology, University of Edinburgh, Edinburgh, United Kingdom

Marvin Zuckerman, PhD, Department of Psychology, University of Delaware, Newark, Delaware