Samuel Justin Sinclair is Assistant Professor at Harvard Medical School, and Director of Research at the Psychological Evaluation and Research Laboratory (PEaRL) at the Massachusetts General Hospital. He is the founder and past president of the Society for Terrorism Research, and a co-founder and co-editor-in-chief of the peer-refereed journal, IBehavioral Sciences of Terrorism and Political Aggression/I. He is also a co-editor of IInterdisciplinary Analyses of Terrorism and Political Aggression/I, and a co-editor of the forthcoming volume, IContemporary Debates on Terrorism/I. Dr. Sinclair is the developer of the Terrorism Catastrophizing Scale (TCS), a psychological assessment tool that measures anticipatory fears of terrorism.
Daniel Antonius is Assistant Professor at the University at Buffalo, State University of New York, and Adjunct Professor at New York University School of Medicine. Additionally, he is a faculty member at the Institute for Social and Psychiatric Initiatives (InSPIRES) and works as a forensic psychologist at Erie County Forensic Mental Health Services in Buffalo. He is a past member of the Governing Board of the Society for Terrorism Research, a co-founder and co-editor-in-chief of IBehavioral Sciences of Terrorism and Political Aggression/I with Samuel Justin Sinclair, and a co-editor of IInterdisciplinary Analyses of Terrorism and Political Aggression/I. He has published numerous articles on the neurobiological, behavioral, and societal factors that underlie violence and aggression in individuals and groups.