article_snippet: The UK average is 104.
article_snippet: Membership of the society is reserved for those with an IQ in the top 2 per cent of the population, around 148.
article_snippet: IQ can change over time but most will not change by more than a few points.
article_snippet: The score will usually stay the same as it is a measure of ability rather than knowledge.
article_snippet: The society welcomes people from all backgrounds who have an IQ is in the top two per cent of the population.
article_snippet: Albert Einstein apparently had an IQ of 160, while former US presidents Abraham Lincoln, Benjamin Franklin and Bill Clinton also racked up very high IQs - mustering 128, 160 and 137 respectively.
article_snippet: Napoleon Bonaparte scored 145 and Sigmund Freud had a score of 156.