Professor Kuwabara's research and teaching interests are in the area of social exchange and social networks, focusing in particular on structural aspects of social interactions and relationships that promote or undermine interpersonal trust. One stream of his research considers how and when trust develops between individuals and groups and in different cultures (e.g. the U.S. vs. Japan). More recently, he has examined trust issues online markets. Another line of his work concerns how people perceive social networks among their peers (e.g. friends and co-workers). He teaches courses on negotiations and social capital.