The book discusses in detail a variety of practical and theoretical issues in identifying and addressing second language learning problems. Intended primarily for classroom teachers working with late teenagers or adults, it focuses on learning styles, affective factors, and learning strategies. Real and composite case studies are presented throughout the text, and emphasis is on the teacher's role in identifying and solving problems. An introductory chapter explains the purpose and organization of the book. Subsequent chapter topics include: methods of direct data collection (observation and interviews); cognitive (learning) styles; field dependence and field sensitivity; personality models; the affective dimension (motivation, self-efficacy, and anxiety); student biographical and background information and learning strategies; using information from questionnaires and tests, and assessing language aptitude; case studies of specific situations; knowing when to seek outside help; and applying the book's content in the classroom. Appended materials include a sample biographical/background questionnaire, an instrument for assessing student study approach, and motivation and learning strategies questionnaire, notes standardized test item interpretation, and case highlights. Contains 154 references. (MSE)