The Ultimate IQ Test Book is the biggest book of IQ practice tests available. Written and compiled by IQ-test experts, it contains 1000 practice questions organized into 25 tests, with a simple guide to assessing individual performance. The questions themselves are very similar to those faced by candidates in actual IQ tests. They are multi-discipline and include verbal, numerical, and diagrammatic reasoning questions, so that readers can practice on all the different types of questions they are likely to encounter.