It depicts Liberal Chancellor of the Exchequer David Lloyd George (1863 - 1945) being addressed by folk hero Robin Hood, with the words 'I took from the rich and gave to the poor.

BBC: In pictures: David Lloyd George election posters

They outperformed 10 typical healthy older folk (average age 83) on a test that involved recalling lists of words, and they matched the performance of 14 healthy middle-aged volunteers (average age 58).

FORBES: Meet the "SuperAgers": Elderly People Whose Brains Don't Age