Principal Investigator

Sander van der Linden, PhD.

Sander van der Linden

Dr. Sander van der Linden is a social-psychologist based in the Department of Psychology (link is external) with joint appointments in the Woodrow Wilson School of Public Affairs (link is external) and the Andlinger Center for Energy and the Environment. He is also an affiliate of the Princeton Global Health Program.

At Princeton, Sander directs the Social and Environmental Decision-Making (SED) lab and teaches the Psychology of Environmental Decision-Making. (link is extern He previously held a visiting scholar appointment (2012-2014) with the Yale Program on Climate Change Communication (link is external) at Yale University (link is external).

He received his Ph.D. from the London School of Economics and Political Science.

His research has received numerous awards, including the American Psychological Association (APA's) outstanding Graduate Research Award( (Div. 34), the Society for the Psychological Study of Social Issues (SPSSI's) dissertation prize, and the International Association of Applied Psychology (IAAP's) "best paper" award (Div. 4).

E-mail: | Office: 421 Peretsman-Scully Hall | Phone: 609-258-6935



Nick Rohrbaugh

rohrbaughNick is a second-year graduate student in the Department of Psychology. His research interests include the emergent effects of individual psychological differences and the cognitive processes that cause people to share information with and influence one another. He is also interested in how we can use our knowledge of these processes to encourage pro-environmental behavior and accurately communicate scientific findings to the public. Prior to attending Princeton, Nick received his B.A. in psychology from the University of Pennsylvania and worked as a research assistant with the Good Judgment Project.
Email: | Office: 528 Peretsman-Scully Hall


Melody Falter


Melody Falter is a senior pursuing a major in psychology and a certificate in environmental studies. Her research interests include the moral dimensions of climate change and environmental justice--specifically, will an individual's core values influence the way they perceive the importance of climate action? Her thesis explores this question from a social psychological perspective, using a mixture of cognitive dissonance and various climate communication methods. Melody is also very involved with Manna Christian fellowship, the PU Gospel Ensemble, and is on the Student Advisory Board for the Princeton Perspective Project. In her free time, Melody enjoys listening to and performing classical piano music, playing sports as often as possible, and watching cute animal videos on YouTube. 

Taimur Ahmad

taimurTaimur is a senior sociology major.  His thesis research focuses on the ways that urban green spaces create social networks and social capital. He spent the summer of 2015 doing ethnographic field work in New York City Parks on this topic. Outside of academics he is highly involved in the outdoors community on campus and is an avid rock climber and occasional fiction writer.





Angela Zhou


Angela is a senior in the Operations Research and Financial Engineering department. She's interested in models of decision-making: human or optimal. She's also studying statistics and machine learning and her thesis research will focus on developing online distributed learning algorithms over networks. Outside of the quantitative domain, she's pursuing a certificate in visual arts via graphic design and photography. 




Karen Gallagher-Teske


Karen is a sophomore who is planning on majoring in economics. She is interested in learning more about international systems of exchange, but is also interested in European politics, social psychology, and learning languages. Otherwise, she is a Petey Green volunteer, a member of the Religious Life Council, a member of the EU Program, and likes to read and travel. 




Jessica Santos

Jessica SantosJessica first joined the team in 2014 as a research assistant developing a passion for environmental psychology in her previous position as Communications Fellow in the Princeton Office of Sustainability. She is most interested in using psychology to facilitate environmental engagement, especially within the issue of climate change. She is a member of Ithaca College's Class of 2013, where she received her B.A. in Writing. In her time there, she also minored in Environmental Studies and completed the Humanities and Sciences Honors Program. In her free time, she enjoys reading, listening to podcasts, Game of Thrones, and playing the air guitar. Jessica is now a graduate student at the University of Michigan.