Chapter one puzzles in sla .
1.1 a recent acronym
1.2 sla as a field of learning
1.3 issues for exploration
1.3.1 description
1.3.2 explanation
1.3.2.1 external factors
1.3.2.2 internal factors
1.4 the organization of this book
1.5 the use of this book
Chapter two the influence of behaviorism
2.1 the "interference" of l1
2.1.1 pronunciation
2.1.2 syntax
2.1.3 semantics and pragmatics
2.2 the behaviorist understanding of sla
2.2.1 "rat psychology"
2.2.2 the audio-lingual method
2.3 contrastive analysis
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