- Is the biggest book of IQ practice tests available with 1000 psychometric test questions - substantially more than the nearest competitor
- Is perfect for those facing an IQ test or for puzzle enthusiasts
- Covers every aspect of IQ testing, including verbal reasoning, diagrammatic reasoning and lateral thinking
- Is written by two of the undisputed masters of IQ testing, Philip Carter and Ken Russell, who have created over 60 books on the subject