By Brearley
By Pete Sanders
By Letts
By Walker
By James Lawley, Penny Tompkins
By Hooper
By Jacobs
By Margaret Rustin, Emanuela Quagliata
By Julie Starr
By Laurie K. MacKinnon
By Valerie Sinason
By Anthony D. Pellegrini (University of Minnesota, USA.), Frank Symons, John Hoch
By Elaine Cox, Tatiana Bachkirova, David Ashley Clutterbuck
By Michael J. A. Howe (University of Exeter)
By Maria Montessori
By Joshua Fletcher
By Sara Kuburic
By Alan Schwarz
By Mandy Bryon, Penny Titman, Prof Peter Cooper, Polly Waite
By Jennifer Day
By Shaffer, David
By Fiona Ballantine Dykes, Traci Postings, Barry Kopp, Anthony Crouch
By Sabah Choudrey
By Lynne Murray
By Julia Bueno
By Dr. Lisa R. Fortuna
By Chris Williams, Marie Chellingsworth
By Allen E. Bergin, Sol L. Garfield