Acknowledgments

I am indebted to many people who have helped me both directly and indirectly. I can only mention a few of them here. Earl Stevick and Robin Scarcella kindly provided me with detailed comments on nearly every aspect of the manuscript. I have also received a great deal of useful feedback from John Schumann, John Oller, Adrian Palmer, Tracy Terrell, Andrew Cohen, Steven Sternfeld, and Batyia Elbaum. I am sure this book would be much stronger if I had followed all their advice. The task of writing this volume was made much easier by the support and understanding of my family, my wife Eula, my children Deborah and Daniel, and my parents Leo and Julia Krashen. I would also like to thank my colleagues in the Linguistics Department at USC for their intellectual stimulation and encouragement. I especially thank Larry Hyman, Edward Finegan, Eugene Briere, Elaine Andersen, Elinor Ochs, Edward Purcell, John Hawkins, and Bernard Comrie.

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