Intelligence Quotient (IQ) tests are standardised tests designed to measure human intelligence, and they are a commonplace feature of the educational system and recruitment and selection procedures. This book takes up where Book 4 left off with ten new tests each of forty questions, complete with a guide to assessing performance. By studying the different types of test, and recognising the different types of questions, it is possible for everyone to improve their score and increase their IQ rating. These questions, compiled by UK IQ test experts, offer a great opportunity to practice, whether in preparation for a job interview, or just for entertainment.