Dr. Sommer's primary research interests lie with the effects of peer and coworker rejection on individual performance motivation and interpersonal behavior. She also conducts research on self-regulation, social influence, and motivated decision-making processes in small groups. Dr. Sommer teaches undergraduate and doctoral courses in research methods and social psychology, as well as a course on research design in work organizations as part of Baruch College’s Executive Master’s Program in Management of Human Resource and Global Leadership in Taipei, Taiwan and Singapore. She has received numerous internal awards as well as research and training grants from the National Institute of Mental Health and the National Science Foundation. She sits on the editorial board of Social Influence.