Do individual-level student characteristics affect appreciation for, and benefit from, the use of student response system technology? We investigate the usefulness of in-class electronic student response systems ("classroom clickers") to understand if it benefits some college students more than others. Specifically, we investigate whether shyer students benefit more from the use of the student response system, with the expectation that shyer students will appreciate using the system more and consequently make more positive gains in attitudes about the class, knowledge of politics, and political engagement. Utilizing original survey data collected from Fall 2009 and Fall 2010 introductory American Government courses, we find that shyer students show greater attitude improvement over the course of the semester, exhibit more knowledge about politics and engage in more outside-of-class political discussions than less shy students when electronic student response systems are utilized, but no such difference emerges when more traditional in-class feedback methods are used. Overall, the findings presented here suggest that, at least marginally, the use of in-class electronic response systems can improve the educational experience of students who are typically isolated by traditional classroom teaching methods. (Contains 6 tables and 17 notes.)