Dr. Wadsworth's research is focused on three areas. The first is violent crime. He has published extensively on the causes and correlates of violent crime rates in the United States. The second is suicide. Specifically, his research has focused on explaining why some racial and ethnic groups have lower rates of suicide and how and why these rates have varied over time. Lastly, he is engaged in series of projects that examine the individual and social correlates of subjective well-being. In other words, who reports being happy, and why.