Jeffrey Katz is founder and president of Scientific Consultants Services, Inc., a firm which provides custom programming and publicly available software for traders. He specializes in applying artificial intelligence technologies to trading and has developed two AI-based trading software programs, N-TRAIN and LOGINVOLVE. He has published a number of articles in Technical Analysis of Stocks and Commodities, PC II, and Neuro Ve$t Journal. He wrote two chapters in the book, Virtual Trading. He holds a masters degree in mathematics and a Ph.D. in psychophysiology from the University of Lancaster in England. He is a member of MENSA. Donna McCormick is vice president of Scientific Consultants Services, Inc. She specializes in the design of trading systems using Omega Research's products, the leading provider of system development tools in the trading industry. She has co-written several articles for Technical Analysis of Stocks and Commodities. Less