Five full IQ tests, with answers and explanations, to be used not only to determine ones IQ, but to determine one's strengths.

Know your own IQ was, and is, a best seller.
It also provoked a mass critical comment and correspondence. Some readers claimed that their answers were as good as the accepted solution, while others complained that the book was a test of knowledge as much as intelligence. A few protested that it was all too easy.
In this sequel, Check your own IQ, Professor Eysenck answers these criticisms fully and provides five new tests of the standard (omnibus) type as a check. He has also added three specific tests which are designed to sort out whether the reader shows more ability in verbal, numerical, or visual-spatial terms. For those with IQs of over 150 -- to sharpen their wits or call their bluff -- he has provided a few sets of problems under the title "Limbering up for Intellectual Giants".
Those wishing to test themselves seriously are again warned not to dip into the questions or answers.