<p>The department in which you major is generally where you will find your senior thesis adviser; I don’t believe this is a set-in-stone rule though, especially if you have a lot of interdisciplinary material in your thesis (which many do).</p>
<p>And professors are always available to talk to you, regardless of whether you are taking their course. As a freshman, I’ve already talked to many Woodrow Wilson School professors at special dinners, and WWS courses are generally offered to juniors and seniors only. Professors from all departments very frequently give talks and seminars where they are aiming to talk to students not necessarily in their departments. It really is fantastic. :)</p>