We are grateful to Roger Hawkins, James Hurford, Eric Kellerman, Michael Long, Lydia White, and Helmut Zobl for helpful comments. Thanks also to Justine Cullinan of the New York Academy of Sciences for tracking down some bibliographic information. Earlier versions of this chapter were given by Gregg at a symposium on CPs and L2A organized by David Birdsong at the Association Internationale de Linguistique Appliquée (AILA) conference in Jyväskylä, Finland, August 1996; at the University of Durham, February 1997; and at Thames Valley University, March 1997. We thank David, Bonnie Schwartz ( Durham), and Peter Skehan ( Thames Valley) for providing these opportunities to test our ideas.
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