This volume focuses on different aspects of language development. The contributions are concerned with similarities and differences between first and second language acquisition, the acquisition of sentence structure and functional categories, cross-linguistic influence in bilingual first language acquisition as well as the relation between language acquisition, language contact and diachronic change. The recurrent topic of the volume is the link between linguistic variation and the limitation of structural variability in the framework of a well-defined theory of language. In this respect, the volume opens up new perspectives for future research.

The case studies in this volume offer new insights into word order change. As is now becoming increasingly clear, word order variation rarely attracts social values in the way that phonological variants do. Instead, speakers tend to attach discourse or information-structural functions to any word order variation they encounter in their input, either in the process of first language acquisition or in situations of language or dialect contact. In second language acquisition, fine-tuning information-structural constraints appears to be the last hurdle that has to be overcome by advanced learners. The papers in this volume focus on word order phenomena in the history of English, as well as in related languages like Norwegian and Dutch-based creoles, and in Romance.

The term “crosscurrent” is defined as “a current flowing counter to another.” This volume represents crosscurrents in second language acquisition and linguistic theory in several respects. First, although the main currents running between linguistics and second language acquisition have traditionally flowed from theory to application, equally important contributions can be made in the other direction as well. Second, although there is a strong tendency in the field of linguistics to see “theorists” working within formal models of syntax, SLA research can contribute to linguistic theory more broadly defined to include various functional as well as formal models of syntax, theories of phonology, variationist theories of sociolinguists, etc. These assumptions formed the basis for a conference held at Stanford University during the Linguistic Institute there in the summer of 1987. The conference was organized to update the relation between second language acquisition and linguistic theory. This book contains a selection of (mostly revised and updated) papers of this conference and two newly written papers.

The last few years have seen a steadily increasing interest in constructional approaches to language contact. This volume builds on previous constructionist work, in particular Diasystematic Construction Grammar (DCxG) and the volume Constructions in Contact (2018) and extends its methodology and insights in three major ways. First, it presents new constructional research on a wide range of language contact scenarios including Afrikaans, American Sign Language, English, French, Malayalam, Norwegian, Spanish, Welsh, as well as contact scenarios that involve typologically different languages. Second, it also addresses other types of scenarios that do not fall into the classic language contact category, such as multilingual practices and language acquisition as emerging multilingualism. Third, it aims to integrate constructionist views on language contact and multilingualism with other approaches that focus on structural, social, and cognitive aspects. The volume demonstrates that Construction Grammar is a framework particularly well suited for analyzing a wide variety of language contact phenomena from a usage-based perspective.

Research on creolization, language change, and language acquisition has been converging toward a triangulation of the constraints along which grammatical systems develop within individual speakers--and (viewed externally) across generations of speakers. The originality of this volume is in its comparison of various sorts of language development from a number of linguistic-theoretic and empirical perspectives, using data from both speech and gestural modalities and from a diversity of acquisition environments. In turn, this comparison yields fresh insights on the mental bases of language creation.The book is organized into five parts: creolization and acquisition; acquisition under exceptional circumstances; language processing and syntactic change; parameter setting in acquisition and through creolization and language change; and a concluding part integrating the contributors' observations and proposals into a series of commentaries on the state of the art in our understanding of language development, its role in creolization and diachrony, and implications for linguistic theory.Contributors : Dany Adone, Derek Bickerton, Adrienne Bruyn, Marie Coppola, Michel DeGraff, Viviane D�prez, Alison Henry, Judy Kegl, David Lightfoot, John S. Lumsden, Salikoko S. Mufwene, Pieter Muysken, Elissa L. Newport, Luigi Rizzi, Ian Roberts, Ann Senghas, Rex A. Sprouse, Denise Tangney, Anne Vainikka, Barbara S. Vance, Maaike Verrips.

In this volume, Eve V. Clark takes a comprehensive look at where and when children acquire a first language. All the major findings and debates are presented in a highly readable form.

This volume explores word order change within the framework of diachronic generative syntax and offers new insights into word order, syntactic movement, and related phenomena. It draws on data from a wide range of languages including Sanskrit, Tocharian, Portuguese, Irish, Hungarian and Coptic Egyptian.