Coach John Grace conducts an interview with coach Nick Newman about sports psychology, specifically on the topics of feedback and motivation. Having worked alongside both coaches, I can say that these gentlemen are dedicated performance enhancement professionals.
Nick, a competitive jumper for a number of years, has written a book, The Horizontal Jumps: Planning for Long Term Development. I have a copy. While the book is targeted to those coaching or training for the horizontal jumps, the truth is that the book contains much material that is applicable to the training of any speed/power athlete. You can get a copy of Nick’s book here: http://tinyurl.com/n8wzw7e