By Geoffrey Durrant
By K. Ajdukiewicz
By David Crystal
By Paul Ricoeur, John B. Thompson
By Richard J. Watts (Universitat Bern, Switzerland)
By Graeme Shanks (University of Melbourne), Peter B. Seddon (University of Melbourne), Leslie P. Willcocks (University of Warwick)
By J. A. Steers
By E. A. Maxwell
By Thomas A. Garrity (Williams College, Massachusetts), Lori Pedersen
By Hilary Putnam
By Helen Herbert
By Nellie Roberts
By School Mathematics Project
By Carol Meyers (Duke University, North Carolina)
By Walter Glannon (University of Calgary)
By Robert J. Sternberg (Cornell University, New York), Susan T. Fiske (Princeton University, New Jersey), Donald J. Foss (University of Houston)
By George E. Monahan (University of Illinois, Urbana-Champaign)
By Robert Smith, Rex Gibson, Vicki Wienand, Richard Andrews, William Shakespeare
By John W. Schwieter
By Narinder Kapur (University College London), Alvaro Pascual-Leone, Vilayanur Ramachandran (University of California, San Diego), Jonathan Cole, Sergio Della Sala (University of Edinburgh)
By John Rosselli
By P. G. Drazin (University of Bristol)