RESEARCH INTERESTS

My primary research interest is in the dynamics of cooperation, specifically, why people are not more cooperative.  I focus on both personality- and cognition-based reasons for this. 

Regarding personality, I believe everyone has a stable set of traits, or patterns of behavior, that help them navigate the world and exploit their surroundings to best advantage.  These traits result from social learning that occurs primarily during childhood and adolescence but does continue across the lifespan.  The patterns become fixed early on, and thus very hard to change, even when the traits do not work well in the current surroundings.  As a major part of social learning is the experience of working with others to accomplish goals, it seems to me perfectly reasonable that personality traits would affect one's willingness to cooperate.  My interest here, then, is in knowing which particular traits relate to cooperative action.  I see this work as vital because the traits represent a potential brake on the effectiveness of interventions designed to encourage greater cooperation, in that people with particular levels of a trait may just not respond to a specific intervention.  I have typically studied the traits of Social Value Orientation and trust, and am starting work on Person-Thing Orientation, but also have an interest in the role of the "Big Five" traits.

At the cognitive level, I'd like to know how people think about, and respond to, what their fellow group members are doing and have done.  Social comparison is a primary influence on much social behavior.  We like to know how we match up with similar others, and most people are motivated to make sure their behaviors are within the range of acceptable actions.  What, then, do people do if they are not being very cooperative, but discover that most other people are?  What if they discover after the fact that someone was far more, or less, cooperative than anyone else?  How does this information affect what they do in the future?  Among our major findings here, we have shown that people are sensitive to what similar others are doing, and will revise their behaviors to seem more in line with those people; those who are objectively doing very well will nonetheless get quite upset if someone else is doing better than them; and people who feel like things have been going better than expected will become less cooperative in the future, and vice versa for those who feel things have been going more poorly than expected. 

In 2010, my former student Asako Stone and I discovered that people generally do not want very generous people to remain involved in the group.  For some people, this is because they feel such extraordinary people make normal actors look bad, and may end up raising the bar on what is considered appropriate behavior.  Other people think the person is violating social rules of convention, which state that you should give in proportion to what you will get out of the situation--a highly generous person is giving more than they get in return.  Finally, a few people saw a sinister motive underlying the person's behaviors, and believed the person was setting everyone else up for a double-cross.  This research gained us international attention in The Economist, Time, US News and World Report, Wired, and myriad newspapers around the world, as well as interviews on the BBC and Armed Forces Radio.  We are currently working on follow-up studies designed to understand why people can be negative toward generous others, and what lengths they will go to to force the generous person out, or to get them to change their ways.  As it is counterproductive to drive away people who want to help the group, why people do it anyway is, we feel, a major issue.

A new area for us is investigation of how personality traits relate to simple willingness to engage in group work.  Presumably, some people find group tasks less attractive than others, but study of who these people are, and the impact of including them in the group anyway, is minimal.  We are focusing on a trait called "lone wolf tendency" that has been shown in the educational literature to identify students who function poorly on group projects.  We are currently testing to see if lone-wolf is also predictive of willingness to be a part of more general group tasks.

Finally, I enjoy applying my quantitative training to a wide variety of problems, especially the modeling of health-behavior connections.