Elise Tan-Roberts, at the age of two, became the youngest member of the high-intelligence organization, Mensa. Her estimated IQ is 156, placing her in the top 0.2 percentile of children her age.
At two years old, Britain's Tan-Roberts could name 35 country capitals, name the three different types of triangles and spell her own name, among other feats of intelligence.
Mensa
Mensa is an international organization which only accepts members with an IQ of 148 or above, the top 2 percentile of the world. Tan-Roberts' acceptance is a rare occurrence, as the organization usually doesn't test children below the age of 10.