These colleagues have read and commented on all or portions of earlier manuscripts: Laura Atwood, William Bergquist, Vikki Brock, Kevin Cashman, Jean Davies, Lorne Ellingson, Suzan Guest, Mike Jay, Richard Kopp, Jeanie Nishimura, Ruth Orenstein, Robert Potvin, Pamela Ramadei, Pam Richarde, Jeannine Sandstrom, Melinda Sinclair, Lee Smith, Irene Stein, Lew Stern, Adria Trowhill, and others. We are grateful for their generous help. At the same time, they are not responsible for any lapses in these pages.

Thank you to our supportive and patient Wiley editor, Marquita Flemming. We continue to depend on the thoughtful work and generous spirit of neuroscientists to bring brain research to our minds and society, including Amy Arnsten, Leslie Brothers, Robert Coghill, Naomi Eisenberger, Matt Lieberman, Kevin Ochsner, Jeffrey Schwartz, Dan Siegel, Henry Stapp, Yi-Yuan Tang, and many others who also deserve our respect and gratitude.

David wishes to thank all the people who dedicate their lives to painstaking research to further our understanding of human nature.

Linda could not possibly have completed this book without the support of her colleagues at Adler International Learning, her daughters and grandchildren, and, more than anything else, the practical and loving input of her spouse, Susan.