1．By Way of Introduction 1
2．The Phonetic Approach 10
3．The Perception of Speech 47
4．The Statistical Approach 80
5．Rules for Using Symbols 100
6．Individual Differences 119
7．The Verbal Behavior of Children 140
8．The Role of Learning 159
9．Verbal Habits 174
10．Some Effects of Verbal Habits 199
11．Words，Sets，and Thoughts 223
12．The Social Approach 249
Bibliography 276
Index 287