This article sheds light on the linguistic and extralinguistic conditions that determine the likelihood of L1 grammatical attrition in late sequential bilinguals. We explore whether aspectual interpretations associated with the present tense may be a vulnerable area for the native grammar of 30 late Spanish-English bilinguals who have settled in…

Purpose: Insights from linguistic variation research illustrate a linguistically diverse population, in which even speakers who can be classified as speaking a "mainstream" variety have grammatical knowledge of vernacular or "nonmainstream" features. However, there is a gap in our knowledge regarding how vernacular features are…

Children's acquisition of directional verbs in sign languages has received a lot of attention, but less is known about the sociocultural process of using these verbs, especially in the context of emerging sign languages in diverse language ecologies. Directional verbs are a common grammatical phenomenon of many sign languages in which some verbs…

Verbal morphology has been identified as a particularly vulnerable domain for adult heritage speakers (HSs) of Spanish, especially when it involves the selection of subjunctive mood. A minimal amount is known, however, about the potential effects of the variability associated with these forms on the acquisition of related epiphenomena, such as the…

The research explores forms and function of variant tag questions (VTQs) in the native and non-native Englishes. For the said purpose, patterns of VTQs in Pakistani English are compared with two native (British and New Zealand) and two non-native (Indian and Singaporean) varieties. The components of the "International Corpus of English,"…

Child language acquisition research has provided ample evidence of lexical frequency effects. This corpus-based analysis introduces a novel frequency measure shown to significantly constrain adult language variation, but heretofore unexplored in child language acquisition research. Among adults, frequent occurrence of a form in a particular…

This dissertation explores subject pronoun expression (SPE) in Palenquero Spanish (PL Spanish) and Palenquero Creole (PL Creole), two languages that have coexisted for centuries in San Basilio de Palenque (Colombia), share most of their lexicon, but differ in their grammar. Crucially, this study investigates how the contact between them and the…

This study investigated the predictions of two approaches to second language acquisition. According to the usage-based approach, learner knowledge results from the strengths and weaknesses of input-driven statistical learning. According to the learner-varieties approach, pragmatic communication principles and language-internal constraints play…

The phenomenon of regularization -- learners imposing systematicity on inconsistent variation in language input -- is complex. Studies show that children are more likely to regularize than adults, but adults will also regularize under certain circumstances. Exactly why we see the pattern of behaviour that we do is not well understood, however.…

A well-known challenge for language learners is that the input is typically produced by a variety of speakers, each with distinct vocal characteristics (Liberman, Harris, Hoffman, & Griffith, 1957). Accordingly, many studies have indicated that talker variability leads to processing costs for learners across the lifespan (Jusczyk & Pisoni,…

Previous research has demonstrated that adults are successful at visually tracking rigidly moving items, but experience great difficulties when tracking substance-like "pouring" items. Using a comparative approach, we investigated whether the presence/absence of the grammatical count-mass distinction influences adults and children's…

This dissertation examines Spanish Direct Object clitic pronouns in Argentine spoken Spanish of adults and children (ages 4;0-7;0). It concentrates on (Finite verb + Nonfinite verb) constructions that allow both pre-verbal (Proclisis) and a postverbal (Enclisis) clitic placement. Previous corpus studies have shown that lexical (finite verb),…

Faroese is at the tail end of a change from an Icelandic-type syntax in which V-to-T is obligatory to a Danish-type system in which this movement is impossible. While the older word order is very rarely produced by adult Faroese speakers, there is evidence that this order is still marginally present in the adult grammar and thus only dispreferred,…

This article analyses the styles of English produced by an adult migrant who started to speak the language later in life, and it approaches them from the perspective of quantitative style-shifting and discursive stylization. After defining style and the procedures needed to justify the term "L2," the study describes the focal informant's…

In this paper we investigate the effect of variable input on the acquisition of grammar. More specifically, we examine the acquisition of the third person singular marker -s on the auxiliary "do" in comprehension and production in two groups of children who are exposed to similar varieties of English but that differ with respect to adult…