My research develops a novel philisophical account of psychopathy and uses it to shed new light on whether people diagnosed with psychopahty are morally responsible for their actions. My project argues for the hypothesis that we can best understand psychopaths in terms of an inability to care both about their future selves and other people. I defend the idea that there is an important connection between future self-interest and moral responsibility, and since psychopaths lack the ability for future self-interest, their moral responsibility is diminished.