Niall Bolger, PhD, (he/him) is the Director of the Couples Lab and Professor of Psychology in the Department of Psychology at Columbia University, where he teaches courses on social relationships, linear statistical models, and longitudinal data analysis. His main research interests include adjustment processes in close relationships using intensive longitudinal methods and laboratory-based studies of dyadic behavior, emotion and physiology, and personality processes as they are revealed in patterns of behavior, emotion, and physiology in daily life. He is also interested in statistical methods for analyzing longitudinal and multilevel data. Dr. Bolger is a Charter Member and Fellow of the Association for Psychological Science, a Fellow of the Society of Experimental Social Psychology and of the Society for Personality and Social Psychology, and a member of the Society for Multivariate Experimental Psychology. He has served on National Institutes of Health and National Science Foundation grant review panels, and as Associate Editor of the Journal of Personality and Social Psychology: Interpersonal Relations and Group Processes, and is co-author of Intensive Longitudinal Methods: An Introduction to Diary and Experience Sampling Research.