Contributions by: Axel Seemann, Timothy P. Racine, David A. Leavens, Colwyn Trevarthen, Peter Hobson, Jessica Hobson, Vasudevi Reddy, Malinda Carpenter, Kristin Liebal, Stephen V. Shepherd, Massimiliano L. Cappuccio, William D. Hopkins, Jared Taglialatela, Karsten Stueber, Shaun Gallagher, Daniel D. Hutto, Elisabeth Pacherie, Henrike Moll, Andrew N. Meltzoff, John Campbell, Marcello Costantini, Corrado Sinigaglia