Jim Barrett is a chartered psychologist with years of experience in advising organizations on their selection procedures. He is a best-selling author and has written many testing books, including The Complete Personality Assessment, How to Pass Advanced Aptitude Tests, The Aptitude Test Workbook and he is co-author of Test Your Own Aptitude, all published by Kogan Page. Tom Barrett runs a online software development consultancy. He specialises in web software architecture, web standards, usability and content management. Tom is a psychology graduate and has developed the software for the online psychometric tests available at insight-tests.com.