<p>The interviews are usually conducted by professors in your major (if you have listed one), so they may be looking at your outside-of-school interests that bolster your desirability in that major. So if you started an internet business and are a Marshall admit, they would like to hear about that. You should plan to really be yourself–after all, you have been accepted to USC early and are clearly at the top of their pool. But then figure out what you are passionate about (some project? work experience? class?) and make sure you communicate that. </p>
<p>I think they are looking for leaders in each department–so try to find a balance of enthusiasm for your field (and how you can achieve your goals at USC) and a decent amount of gratitude that you are being considered for this award.</p>
<p>Best of luck</p>