Dr. Le was trained as an experimental social psychologist with a research focus on romantic relationship processes. His work is often framed within the context of Interdependence Theory (Thibaut & Kelley, 1959) and the Investment Model (Rusbult, 1983), and his research revolves around the construct of commitment. In particular, he is interested in the antecedents and consequences of commitment, the structure of general models of commitment, and the role of commitment (and other variables) in predicting relationship stability (vs. breakup). His other work has examined closeness and emotions in relationshipssocial networks and friend approval in relationships, how social class impacts relationship quality, and the social-cognitive underpinnings of relationship commitment. In addition, he studies relationship maintenance, infidelity, and stress in the context of interpersonal separation. His lab has examined how individuals display their relationship on social networking sites, and how these displays are interpreted by others, and recent research has investigated links between beliefs about relationships and "ghosting" and forgiveness. His work also extends models of interpersonal commitment and maintenance to understanding pro-environmental sacrifice and "green" behaviors in student and community samples, as well as to prosocial academic behavior. See a full list of publications here.

He is also currently working with Drs. Jennifer Lilgendahl (Haverford College) and Kate McLean (Western Washington University) on their NSF-funded Identity Pathways Project (read more about this project here), and is involved with FLAMEnet, an interdisciplinary group of STEM educators and researchers committed to bettering science education using interventions based in psychological science.

Open Science:

Collaborators & Students

His research collaborators have included:

...and several Haverford students who worked in his lab have pursued doctorates in social psychology:

  • Allison Farrell '10 (PhD, University of Minnesota; post-doc at Wayne State University)
  • Emily Dix '12 (University of Wisconsin)
  • Lydia Emery '12 (Northwestern University)
  • Ellen Reinhart '15 (Stanford University)