No abstract
Here, we used event-related potentials to test the predictions of two prominent accounts of code-switching in bilinguals: The Matrix Language Framework (MLF; Myers-Scotton, 1993 ) and an application of the Minimalist Programme (MP; Cantone and MacSwan, 2009 ). We focused on the relative order of the noun with respect to the adjective in mixed Welsh–English nominal constructions given the clear contrast between pre- and post-nominal adjective position between Welsh and English. MP would predict that the language of the adjective should determine felicitous word order (i.e., English adjectives should appear pre-nominally and Welsh adjectives post-nominally). In contrast, MLF contends that it is the language of the finite verb inflexion rather than that of a particular word that governs felicitous word order. To assess the predictions of the two models, we constructed sentences featuring a code-switch between the adjective and the noun, that complied with either English or Welsh word-order. Highly proficient Welsh–English bilinguals made semantic acceptability judgements upon reading the last word of sentences which could violate MP assumptions, MLF assumptions, both assumptions, or neither. Behaviourally, MP violations had no significant effect, whereas MLF violations induced an average drop of 11% in acceptability judgements. Neurophysiologically, MP violations elicited a significant Left Anterior Negativity (LAN) modulation, whereas MLF violations modulated both P600 and LAN mean amplitudes. In addition, there was a significant interaction between MP and MLF status in the P600 range: When MP was violated, MLF status did not matter, and when MP criteria were met, MLF violations resulted in a P600 modulation. This interaction possibly reflects a general preference for noun over adjective insertions, and may provide support for MLF over MP at a global sentence processing level. Model predictions also manifested differently in each of the matrix languages (MLs): When the ML was Welsh, MP and MLF violations elicited greater P600 mean amplitudes than MP and MLF adherences, however, this pattern was not observed when the ML was English. We discuss methodological considerations relating to the neuroscientific study of code-switching, and the extent to which our results shed light on adjective-noun code-switching beyond findings from production and experimental-behavioural studies.
In this paper we investigate category-specific effects through the lens of Welsh mutation. Smith (2011) and Moreton et al. (2017) show that English distinguishes nouns and proper nouns in an experimental blending task. Here we show that Welsh distinguishes nouns, verbs, personal names, and place names in the mutation system. We demonstrate these effects experimentally in a translation task designed to elicit mutation intuitions and in several corpus studies. In addition, we show that these effects correlate with lexical frequency. Deeper statistical analysis and a review of the English data suggests that frequency is a more explanatory factor than part of speech in both languages. We therefore argue that these category-specific effects can be reduced to lexical frequency effects.
is one of two main dialect families of Welsh (cym, ISO 693-3) spoken in Wales, the other being Southern Welsh. The Welsh counties of Anglesey, Gwynedd, Conwy, Denbighshire, Flintshire, and Wrexham in the United Kingdom are considered to comprise the unofficial region of North Wales shown in Figure 1 (as designated by StatsWales 2018). Within this area there are further dialectal differences that are beyond the scope of this analysis, which considers the general features of Northern Welsh as a whole. However, see Thomas & Thomas (1989) for an overview of differences between eastern and western varieties of Northern Welsh.Welsh is a Brittonic Celtic language, more closely related to Cornish and Breton than to Celtic languages in the Goidelic branch: Manx, Irish, and Scottish Gaelic (Ball & Fife 1993). Like all Celtic languages, Welsh has verb-initial word order and a system of initial consonant mutation. Initial consonant mutation is the remnant of historic sandhi processes which conditioned predictable phonological alternations. Today, the phonological triggers for these alternations are opaque or absent, and mutation is best described as a morphophonological process that is found in a small set of lexical items and syntactic patterns (see section 'Mutation' below for further detail).Phonetic description of Welsh has a long history, notably Sweet (1882) and S. Jones (1926). More recent work includes a description of the vocalic system (G. E. Jones 1971(G. E. Jones , 1972, a description of Welsh stress (B. Williams 1999), a collected volume reporting a
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