Compression in the California Vowel Shift: Tracking generational sound change in California's Central Valley

ABSTRACTThis paper investigates the California Vowel Shift, previously characterized as a chain shift, in communities across California's Central Valley. An incremental apparent time analysis of 72 Californians’ vowel spaces provides no clear evidence of a gradual chain shift; that is, changes have not unfolded in an order that reflects an implicational chain in chronological time. Instead, we see contemporaneous movements of vowels that work against the phonological tendency of maximal dispersion typically invoked in describing chain shifts. By analyzing change in the size and dispersion of the entire vowel space, we find that ongoing sound change is instead characterized by a holistic compression of the vowel space. This suggests that, in these California communities, the shift's unfolding was driven by articulatory and social, rather than purely phonological, factors. We propose that the analysis of the size and spread of holistic vowel space can help characterize the nature and motivations for vocalic changes.

Reflexes of Proto-Ryukyuan *i and *u in Miyakoan as a chain shift

The paper examines conditioned changes that occurred in Miyakoan (mostly Proto-Miyakoan) reflexes of Proto-Ryukyuan close vowels *i and *u after the unconditioned raising of Proto-Ryukyuan *e and *o had taken place. These changes in close vowels are interpreted here as chain shifts. The core assumption is that changes in *i and *u occurred in response to the raising of *e and *o in order to avoid or compensate for the functionally damaging merger of *i/*e and *u/*o. The paper shows that there is a rather wide range of conditions under which *i and *u produced distinct reflexes in Miyakoan. Consequently, these vowels acted differently after stops, after sibilants, after nasals, in an onsetless/standalone position, after the flap, before the flap, and before nasals and other sonorants word-initially. At the same time, reflexes of both proto-vowels have been observed to maintain certain symmetry, meaning that in a similar environment, *i and *u generally underwent similar or analogical changes. Thus, the conditions for identifying Miyakoan reflexes or *i and *u are listed and specified in this paper. Conversely, it is argued that unless one of these conditions has been met, one should reconstruct a Proto-Ryukyuan mid-vowel rather than a close vowel. Such specification may influence the comparative study of Ryukyuan languages to a significant degree, challenging a number of the so far established reconstructions (most notably Thorpe 1983).

Interacting processes in phonological theory

This article introduces basic principles of a generative theory of phonology that unifies aspects of parallel constraint-based theories and serial rule-based theories. In the core of the grammar are phonological processes that consist of a markedness constraint and a repair. Processes are universal, but every language activates a different set, and applies them in different orders. Phonological processes may be in bleeding or feeding relations. These two basic relations are sufficient to define more complicated interactions, such as blocking, derived and non-derived environment effects, chain shifts and allophony.

Idempotency in Optimality Theory

Anidempotentphonological grammar maps phonotactically licit forms faithfully to themselves. This paper establishes tight sufficient conditions for idempotency in (classical) Optimality Theory. Building on Tesar (2013), these conditions are derived in two steps. First, idempotency is shown to follow from a general formal condition on the faithfulness constraints. Second, this condition is shown to hold for a variety of faithfulness constraints which naturally arise within McCarthy & Prince’s (1995) Correspondence Theory of faithfulness. This formal analysis provides an exhaustive toolkit for modelingchain shifts, which have proven recalcitrant to a constraint-based treatment.

Gradience, allophony, and chain shifts

ABSTRACTThe monophthongization of /ay/ in the Southern United States is disfavored by following voiceless consonants (price) relative to voiced or word-final environments (prize). If monophthongization is the trigger for the Southern Shift (Labov, 2010) and chain shifts operate as predicted by a modular feedforward phonological theory (cf. Bermúdez-Otero, 2007), this implies price and prize must be two ends of a phonetic continuum, rather than two discrete allophones. We test this hypothesis via distributional analysis of offglide targets and statistical analysis of the effect of vowel duration. As predicted, we find price and prize share a continuous distribution in the Inland South, the region where the Southern Shift probably originated (Labov, Ash, & Boberg, 2006). We use Raleigh, North Carolina, outside the Inland South, as a comparison point; there, the same methodologies indicate price and prize are more discretely separated. Our results thus offer empirical support for the phonological theory that motivated the hypothesis.