Much recent scholarship has sought to identify the linguistic and social factors that favor the expression or omission of subject pronouns in Spanish. This volume brings together leading experts on the topic of language variation in Spanish to provide a panoramic view of research trends, develop probabilistic models of grammar, and investigate the impact of language contact on pronoun expression.

The book consists of three sections. The first studies the distributional patterns and conditioning forces on subject pronoun expression in four monolingual varieties—Dominican, Colombian, Mexican, and Peninsular—and makes cross-dialectal comparisons. In the second section, experts explore Spanish in contact with English, Maya, Catalan, and Portuguese to determine the extent to which each language influences this syntactic variable. The final section examines the acquisition of variable subject pronoun expression among monolingual and bilingual children as well as adult second language learners.

When humans learn languages, are they also learning how to create shared meaning? In The Usage-based Study of Language Learning and Multilingualism, a cadre of international experts say yes and offer cutting-edge research in usage-based linguistics to explore how language acquisition, in particular multilingual language acquisition, works.

Each chapter presents an original study that supports the view that language learning is initiated through local and meaningful communication with others. Over an accumulated history of such usage, people gradually create more abstract, interactive schematic representations, or a mental grammar. This process of acquiring language is the same for infants and adults and across varied contexts, such as the family, the classroom, the laboratory, a hospital, or a public encounter. Employing diverse methodologies to study this process, the contributors here work with target languages, including Cantonese, English, French, French Sign Language, German, Hebrew, Malay, Mandarin, Spanish, and Swedish, and offer a much-needed exploration of this growing area of linguistic research.