Hallgeir Sjåstad is a Professor of Psychology and Leadership at the Norwegian School of Economics (NHH), Department of Strategy and Management. He is also an affiliated researcher at FAIR (NHH) and Center for Conflict and Cooperation at New York University.

In his research, Hallgeir studies how people make decisions, interact in social life, and think about the future. This include specific topics like heuristic judgment, prediction and planning, moral decision-making, social belonging, autonomy and freedom, and the good life. By combining perspectives from social psychology, decision-making research (JDM) and behavioral economics, he uses both large-scale experiments and global survey methods in his work.

Hallgeir is an active researcher in the international community of psychology and social science, and has published his research in leading journals such as Cognition, Personality and Social Psychology Bulletin, Journal of Experimental Social Psychology, Organizational Behavior and Human Decision Processes, Nature Human Behavior, and Nature Communications. In his teaching, Hallgeir gives lectures in leadership and organizational psychology (SOL1), decision-making and happiness research (SOL21), experimental research methods, and social psychology. He is also a frequently invited public speaker, discussing his own and others’ research on decision-making, social interaction, the good life, and leadership. 

Hallgeir Sjåstad is a clinical psychologist by training (Cand.psychol. six-year degree), holding an Advanced Master of Science degree from the University of Bergen (2012), and received his Ph.D. degree in psychology and decision science from NHH in 2017. After working one year as a post-doc at NHH and two years as assistant professor in psychology and behavioral economics in the FAIR Insight Team at SNF, he returned to the strategy department at NHH as associate professor in 2020. In 2022, Hallgeir was promoted to full professor at the age of 36, only 5 years since he defended his PhD.