Starting from the premise that language instruction should be informed by how humans learn language, this module on second language acquisition (SLA) aims to provide teachers at any level with a comprehensive and up-to-date introduction to the key findings about how second languages are learned in adulthood. This module explores a variety of topics, including the mechanisms in the mind responsible for language acquisition, the roles that input and output play in acquisition, and how language develops in the learner's mind over time. Furthermore, the module explores the many factors believed to impact the outcome of SLA, such as the role of the native language, individual differences in aptitude and motivation, and age of acquisition.

Versatility, speed and low cost make wet-stick welding an attractive method for use in underwater repair and construction. This training manual and reference book contains step-by-step procedures for performing basic manual metal arc welding operations together with information on welding equipment, consumables and safety. Exercises are included.

This third edition of the best-selling Theories in Second Language Acquisition surveys the major theories currently used in second language acquisition (SLA) research, serving as an ideal introductory text for undergraduate and graduate students in SLA and language teaching. Designed to provide a consistent and coherent presentation for those seeking a basic understanding of the theories that underlie contemporary SLA research, each chapter focuses on a single theory. Chapters are written by leading scholars in the field and incorporate a basic foundational description of the theory, relevant data or research models used with this theory, common misunderstandings, and a sample study from the field to show the theory in practice. New to this edition is a chapter addressing the relationship between theories and L2 teaching, as well as refreshed coverage of all theories throughout the book. A key work in the study of second language acquisition, this volume will be useful to students of linguistics, language and language teaching, and to researchers as a guide to theoretical work outside their respective domains.

This third edition of the best-selling Theories in Second Language Acquisition surveys the major theories currently used in second language acquisition (SLA) research, serving as an ideal introductory text for undergraduate and graduate students in SLA and language teaching. Designed to provide a consistent and coherent presentation for those seeking a basic understanding of the theories that underlie contemporary SLA research, each chapter focuses on a single theory. Chapters are written by leading scholars in the field and incorporate a basic foundational description of the theory, relevant data or research models used with this theory, common misunderstandings, and a sample study from the field to show the theory in practice. New to this edition is a chapter addressing the relationship between theories and L2 teaching, as well as refreshed coverage of all theories throughout the book. A key work in the study of second language acquisition, this volume will be useful to students of linguistics, language and language teaching, and to researchers as a guide to theoretical work outside their respective domains.

Methods in Enzymology, Volume 646, continues the legacy of this premier serial with quality chapters authored by leaders in the field. Chapters in this new release include Methods for Studying RNA condensation/granules in vitro, RNA Dynamics in Intracellular Condensates, Methods for Viscoelastic Characterization of Liquid and Gel Condensates, Incorporating Proteins into Complex Coacervates, Methods for Study of Liquid-Liquid Phase Coexistence in Proximity to Lipid Membranes, Preparation of and Solute Partitioning in Multiphase Coacervates, Reversible photocontrol of DNA coacervation, Enzymatic Control over Coacervation, and much more.