Only some national Mensas accept child members; many offer activities, resources, and newsletters specifically geared toward gifted children and their parents. Both American Mensa's youngest member (Christina Brown), British Mensa's youngest member (Adam Kirby), and several Australian Mensa members joined at the age of two. The current youngest member of Mensa is Adam Kirby, from Mitcham, London who was invited to join at the age of two years and four months and gained full membership at the age of two years five months. He scored 141 on the Stanford-Binet IQ test. Elise Tan-Roberts of the UK is the youngest person ever to join Mensa, having gained full membership at the age of two years and four months. In 2018, Mehul Garg became the youngest person in a decade to score the maximum of 162 in the test.