Hello, thanks for coming to my poster! Feel free to reach out to me at any time via email at cbreiss@ucla.edu if you'd like to talk or have any questions! I'm also on Twitter at [@CanaanBreiss][1], and you can learn more about me and my work at my website: cbreiss.com. I'll also be monitoring and responding to comments on this page throughout the conference (click the speech bubble in the top right corner). I'll also be available on Zoom from 12-2 (EST) on Saturday at [this][2] link. Brief abstract: Stress clash (SC) occurs when two adjacent syllables within a prosodic phrase both bear primary stress, e.g., *maROON SWEAter*, and is strongly disfavored in English. SC has been shown to increase processing costs, negatively impacts the maintenance of long-distance syntactic dependencies in memory, and attenuates sentence acceptability. The Rhythm Rule (RR) is a repair of SC under which late stress in a word’s citation form is retracted to an earlier syllable, e.g., *thirTEEN MEN *becomes *THIRteen MEN*. We used pupillometry, a technique for passively measuring on-line processing difficulty, to investigate the relative costs (as indexed by increased pupil size) of SC and RR with citation versus shifted stress word forms. We find that that SC increases processing costs, and the RR leads to facilitation and decreased processing demands. [1]: https://twitter.com/CanaanBreiss [2]: https://zoom.us/j/893347396?pwd=bGQ3VlFiTThwa2dLUnNvMUVsdHdmQT09