philip carter is an iq test expert who is continually devising new iq tests and puzzles. he has produced many books covering all aspects of testing, crosswords, puzzles and reasoning. these include advanced iq tests, iq and aptitude tests, iq and personality tests, iq and psychometric test workbook, iq and psychometric tests, succeed at iq tests, test your iq, test and assess your iq, ultimate iq tests and test and assess your brain quotient.