invaluable intellectual, emotional and financial support from countless sources, many of whom I will unintentionally neglect to mention in what follows. First and foremost, this dissertation-and my having survived college in general-would not have been possible without my advisor and mentor Paula Kempchinsky. My research benefited greatly from her comments, suggestions and probing questions, and when I struggled to find answers (or justify to myself why I chose to stay in graduate school), her constant reassurance sustained me throughout this difficult process. (I would also be remiss if I did not, at this point, thank her for her keen editorial eye.) When the University of Iowa was without a Spanish phonologist, Paula assumed the unenviable role of temporary thesis co-director until I had the privilege of meeting Christine Shea, my eventual permanent co-director, whose numerous consultations, brainstorming sessions and e-mails on everything from phonetics to alternative theoretical approaches turned a limited OT analysis into (what I hope is) the multifaceted dissertation before you. I thank her for adopting this phonological orphan. I met Jerzy Rubach, also my co-director and mentor, in [hɛɫ] (that is, H.E.L., or History of the English Language). I once told him during a subsequent semester of independent study in which we met for one hour once per week that I learned more from him in those sixteen total hours than I had in a few previous (general education undergraduate) classes that met three times per week. I feel privileged just to have retained probably less than one-quarter of all the incredible phonological knowledge he has imparted to me over the years. v Much debt is owed to Jill Beckman for being an inspirational instructor, for the countless hours of individual meetings and for all her grammatical corrections, as well. I would like to thank Mercedes Niño-Murcia for being a constant source of positive energy and kindness, and for reminding me not to neglect the importance of my sociolinguistic background, especially when it came to preparing the experimental methodology for this research. I thank Judy Liskin-Gasparro for her insightful methodological comments, as well. From a non-academic perspective, the Spanish and Portuguese picnics that she hosted are fond memories of graduate school that I will always cherish. I cannot envision a graduate school experience that is not shared with fellow graduate students. I thus thank my friends and colleagues who equally suffered with me: