Resumen del Libro
T the lenition environments in which lenition typically occurs. This conflict also helps, and explain variation patterns and the extra-linguistic factors (e.g. fast or casual speech, and/or age, social class and gender-based variability) influencing in which lenition occurs. More specifically, Chapter 1 consists of an introduction to the themes and goals of the dissertation. Chapter 2 discusses the need for theoretical approaches that explain the synchronic phenomena at hand. In this chapter I discuss the Continuous Ranking Scale, the Three Grammar System, and review previous OT approaches to variation such as Floating Constraints and Partial Ranking Constraints models. In Chapter 3, I discuss lays out the sociolinguistic analysis of Northern Mexican Spanish, I will show that when Lazy constraints outrank Faithfulness constraints, maximally economical forms are found to be optimal, and they usually belong to casual or fast speech registers. When the reverse is true, maximally distincti.