IQ test

A 12-year-old football fan has joined the ranks of Mensa after scoring the maximum in an IQ test.

To keep his brain sharp, he does exercises including counting backward from 100 by sevens and taking IQ tests online.

It's not an "acuity" test or an IQ test but Trump has gone back to it again and again as proof of his mental fitness.

Ms Mackenzie was invited to attend an IQ test in Aberdeen and she spent evenings researching the job and studying practice books to improve her numeracy skills.

Kairan’s family told BrainGain Magazine that when he was 9, IQ tests showed that his intelligence was in the 99.9th percentile of the general population.