First Published in 1989. Routledge is an imprint of Taylor & Francis, an informa company.

Chapter 1 Theoretical foundations; Chapter 2 Methodological considerations in ID research; Chapter 3 Language aptitude; Chapter 4 Motivation; Chapter 5 Language learning strategies; Chapter 6 Additional cognitive and affective influences on language learning; Chapter 7 Interactions; Chapter 8 Conclusions and implications;