Jacques Grégoire has a doctorate in psychology. His areas of research concern methods for evaluating intellectual functions and learning disorders, the relationship between emotions and learning, and the mechanisms for acquiring notions of natural and rational numbers. He has developed and adapted numerous psychological tests in French. He was president of the International Test Commission (2006-2008).
After serving as dean of the faculty of psychology and educational sciences, he was Vice-Rector for Staff Policy (2009-2014) before being elected Vice-Rector of the Social Sciences and Humanities Sector in 2015.