intelligence

On 20 May 1921 excited crowds milled around Boston’s railway station hoping to catch a glimpse of Albert Einstein, who was making his first visit to America’s most famously learned city. After an impromptu tour, the physicist was whisked off to breakfast with the city’s mayor...

In psychology and among the lay public alike, high scores on intelligence tests are considered a mark of good thinking. This is not unreasonable. It is now over 100 years since Spearman first reported a single general intelligence factor, known as g or ‘the positive manifold...