By New Horizons Science
By Jim Smith, Ian Gilbert
By Spiegel, Dixie Lee
By McCourt, Frank
By Chris Kyriacou
By Michael Lockwood
By Ruth Deakin Crick
By Ross Howitt
By Roger D. Masters
By Morc Coulson (University of Sunderland)
By Mike Boyle
By Avril Harpley
By Hanna Vappula
By Ros Bayley
By Graham Gibbs, Sue Habeshaw
By Rex Hazeldine, National Coaching Foundation