||<p>In this thesis, I will assess the question of what it means to be responsible for
an action, and attempt to unify the various concepts around the conception of answerability.
Focusing on that notion, I argue, will gives a better understanding of the other proposed
conceptions of responsibility: that of attributability and that of accountability.
I will come up with three connected definitions corresponding to these notions, and
show that once we refine our concept of responsibility, it is possible for an agent
to be responsible in one way, and not another. I demonstrate this contention on the
test case of the psychopath.</p><p>Keywords: moral responsibility, answerability,