Acknowledgements

This research was supported in part by the Department of Defense under grant number 0-94-10. A number of people contributed to this work. We want to especially thank David Farwell, Daniel Villa, Carol Van Ess-Dykema, Karen Payne, Robert Sinclair, Rocio Guillén, David Zarazua, Rebecca Bruce, Gezina Stein, Tom Herndon, and the project members of Enthusiast at CMU, whose cooperation greatly aided our project. We wholeheartedly thank the anonymous reviewers, whose comments and criticisms were very helpful. We also thank Esther Steiner, Philip Bernick, and Julie England for participating in the intercoder reliability study, and Linda Fresques for proofreading the paper.