A four-year-old boy has reportedly joined Mensa, the organisation for people with high IQs.

Matthew Harrison had a vocabulary of 70 words when he was just a year old, says The Mirror.

He now has an IQ of 130, equal for his age to the 146 adults need to attain to enter the society.

But his parents, both of whom left school after their GCSEs, says Matthew, who has also learned Spanish off satellite TV, is just a normal boy who likes comic books.