book so that the skills can be practiced with many different sorts of problems.
Several psychologists gave freely of their time and expertise to help make the third edition as clear and as accurate as possible. I sincerely thank Dale Berger at Claremont Graduate School, Steve Ceci at Cornell University, Carole Wade at Dominican College at San Rafael, and Linda Coodley at Napa Valley College for their helpful comments on sections of the third edition. Larry Wagner at Claremont Graduate School patiently read and commented on every chapter, and numerous faculty from colleges all over the world have written and phoned me with their thoughts and comments over the years since the first edition was published. My sincere thanks to all of them.
I also express my gratitude and admiration to the renowned San Diego artist and my good friend, Robert Perine, who created the cover for the third edition. His new interpretation of Rodin's famous statue "The Thinker" shows how the artist expresses his critical and creative thoughts in a nonverbal medium. I hope that readers of this edition found pleasure in this fine drawing.
This book benefited greatly from the thoughtful comments of many wonderful colleagues. My sincere appreciation goes to Dr. Richard Block of Montana State University; Dr. Gregory Kimble of Duke University; Dr. David Riefer of California State University, San Bernardino; and Dr. Robert Sternberg of Yale University. Their suggestions and insights have been invaluable. Thanks to all of you for sharing your time and thoughts with me and with the readers.
Many people assisted in the preparation of the first edition. Jack Burton, then vice president at Lawrence Erlbaum Associates, Inc., guided me through the publication process with tact and wisdom. In the process, he became an admired and respected friend. George Mandler at the University of California, San Diego, read and reread the manuscript, offering expert advice and practical good sense. His wise counsel was very much appreciated. My dear "aunt," Dr. Katherine D. Newman, now retired from the English Department at West Chester State College, not only commented on the manuscript, offering helpful suggestions and corrections, but also served as a life-long role model. She has influenced greatly the course of my life. Dr. Susan Nummedal at California State University, Long Beach, afforded me the benefit of her expertise with helpful suggestions on the manuscript and gave me support and encouragement with this project. It is deeply appreciated. Dorothy Pionkowski at San Francisco State University provided several useful insights, especially on chapter 3, "The Relationship Between Thought and Language." I would also like to thank an "anonymous philosopher" for comments on the reasoning chapter. Sandi Guideman, production editor, deserves special thanks for all of her help in "pulling the book together"and contributing to its format.
The people most responsible for this text are my husband, Sheldon, and my children, Evan and Joan. Sheldon read and commented on the entire manuscript, suffered through low points in the writing, encouraged me throughout this project and in almost every endeavor in my life. Evan and Joan have helped in numerous ways, but mostly by just being there and taking pride in my accomplishments. Thanks to all of you.
Diane F. Halpen