Professor Wallen has studied the effects of power asymmetries in conflict situations and is currently investigating the antecedents and effects of vengeance and retribution in such situations. His work in the area of gender stereotyping has focused on the consequences of prescriptive stereotype violation on men and women. He has also done work on multilevel models and their application to various research settings. Professor Wallen has previously been engaged as a consultant by Goldman Sachs, & Co. to conduct quantitative data analysis on various internal projects. He has also consulted on projects at The College Board and at NYU School of Medicine. At Columbia, Professor Wallen serves as the administrative director of the Business School’s Program on Social Intelligence, in which capacity he has worked to design and implement an innovative set of activities and experiences for MBA and Executive MBA students.

Business Professor