By Echo R Fling, Dr Anthony Attwood
By Lone Gammeltoft, Jannik Beyer
By Thomas Armstrong
By Robert D. Nye (State University of New York, New Paltz, USA)
By Isabel Briggs Myers, Peter B. Myers
By Kate Rankin
By Penny Kershaw
By Emily Ralls, Caroline Riggs
By Collins, Gary R.
By Paul J. Silvia
By Nick Lund
By Roger Tourangeau (The Gallup Organization), Lance J. Rips (Northwestern University, Illinois), Kenneth Rasinski (University of Chicago)
By Marilynn B. Brewer (Ohio State University), Miles Hewstone (Oxford University, UK)
By Professor of Psychology Adrian Furnham (University College London UK)
By Nicky Hayes
By Cole
By Cara Flanagan
By Scott D. Wright, Pamela A. Smith, Amy Maida Wadsworth, William McMahon, Kristina Cottle
By Peter Stratton, Nicky Hayes
By Gustave le Bon
By John Phillips, Lyndsey Stonebridge
By Helen Graham
By Bo Hejlskov Elvén
By American Psychological Association
By Debra Penman, Deborah Philips, Liz Linnington
By Flanagan, Cara, Berry, Dave, Jones, Mark, Jones, Ruth, Liddle, Rob
By DK
By Yuko Yoshida