Contributions by: Heidi Keller, Kim A. Bard, Marga Vicedo, Ross A. Thompson, Masako Myowa-Yamakoshi, David L. Butler, James S. Chisholm, Kristen Hawkes, Lynn A. Fairbanks, Johannes Johow, Elfriede Kalcher-Sommersguter, Katja Liebal, Volker Sommer, Bernard Thierry, Barbara L. Finlay, Margaret A. Sheridan, Allyson J. Bennett, William D. Hopkins, Ruth Feldman, Valerie Gazzola, Jay N. Giedd, Michael E. Lamb, Dirk Scheele, Steve Suomi, Akemi Tomoda, Nim Tottenham, Nandita Chaudhary, Gilda Morelli, Alma Gottlieb, Marjorie Murray, Naomi Quinn, Mariano Rosabal-Coto, Gabriel Scheidecker, Akira Takada, Cindy H. Liu, Stephen H. Chen, Yvonne Bohr, Leslie Wang, Ed Tronick, Suzanne Gaskins, Marjorie Beeghly, Ariane Gernhardt, Douglas M. Teti, Thomas S. Weisner, Relindis D. Yovsi