Kathryn Crosswhite teaches at the University of Rochester.

• 1 Introduction and Backgrounds 2 Motivating Reduction: The Constraint Set 3 Case Study: Russian Vowel Reduction 4 Phonetic Motivation v. Phonetic Determinism 5 Factorial Typology 6 Contextual Blocking of Vowel Reduction 7 Moraicity, Reduction, and Stress-Timing 8 Previous Approaches to Vowel Reduction Appendix A: Attested Reduction Patterns, Alphabetically by Language Appendix B: Predicted Reduction Patterns for 5- and 7-Vowel Systems Notes References Index