Complex sentence: During his tenure at Yale, he held positions as the James Rowland Angell Professor of Psychology, Professor of Epidemiology and Public Health, Director of the Rudd Center for Food Policy and Obesity, Chair of the Department of Psychology, and Master of Silliman College.
Split into simpler sentences: During his tenure at Yale, he held positions as the James Rowland Angell Professor of Psychology, Professor of Epidemiology and Public Health, and Director of the Rudd Center for Food Policy and Obesity. While at Yale, he also served as Chair of the Department of Psychology, and Master of Silliman College.