Philip Carter is a UK IQ test expert who is continually devising new IQ tests and puzzles. He has produced many books covering all aspects of testing, puzzles and reasoning. These include Advanced IQ Tests, IQ and Personality Tests, IQ and Psychometric Test Workbook, IQ and Psychometric Tests, Test and Assess your Brain Quotient and The Brain Fitness Workout. With the late Ken Russell he has written Test your IQ, Test and Assess your IQ and Ultimate IQ, all published by Kogan Page.After taking a degree in languages at Oxford, John G Fisher started his business career in direct marketing and the insurance industry before establishing one of the country's leading performance improvement agencies. He specializes in employee incentives, staff communication and conference/event planning. He is a regular columnist in the marketing press.