Acknowledgments

This book draws upon a myriad of user studies and client projects conducted by current and past members of Nielsen Norman Group, and our insights have been honed by many discussions with this group of supremely talented professionals, including Kara Pernice Coyne, Susan Farrell, Shuli Gilutz, Garrett Goldfield, Chris Nodder, Donald A. Norman, Amy Schade, Suzy Sharpe, Michael Summers, Marie Tahir, Bruce "Tog" Tognazzini, and Jenny Wu. We thank our business staff for making our projects happen: We would have no data if it weren't for Brenda Brozinick, Luice Hwang, and Susan Pernice. They make the company run. We also thank our research assistant, David Philp, who reviewed hundreds of hours of test videos to collect some of the statistics presented in this book. Finally, we thank Marjorie Baer, Davina Baum, Derek Loranger, and John Morkes for contributing additional insights. And a special thanks to Camille Peri for help with the manuscript and providing the encouragement that allowed us to complete this book.

Jakob Nielsen and Hoa Loranger