The book also includes a state-of-the-art summary of research on knowledge acquisition and use which provides applied linguists with a solid basis for developing their ideas about their students’ learning and use of the knowledge presented in their classes. Furthermore, valuable information for applied linguists interested in researching the learning in their own classrooms is provided by a chapter evaluating a variety of research methods. Each author also provides "insider" information on the advantages and disadvantages of the research tools they used for investigating questions they have.