With an IQ above 160, Alexis Martin, of suburban Queen Creek, is now the youngest member in the Arizona chapter of Mensa, a Phoenix television station reported.
Alexis, who reads at a fifth-grade level and taught herself Spanish using her parents' iPad, qualified by scoring among the top 2% of the general population on a standardized intelligence test, her father said.
Read: High IQ helps kids cope
Something different
Ian Martin told local ABC15 in an interview that the family began noticing that something about their daughter was different when she was just a year old.
"She would recite her bedtime story from the night before," he told the station. "She didn't just recite them, she recited them exactly."
A special gift
Martin told ABC15 that Alexis, who started reading at age 2, can be amazing with her special gift.
Read: Low IQ linked to pesticides
"Anytime she learns a word and just picks it up through anything, she never ever uses it in the incorrect context," he said.
Martin could not be reached for comment by Reuters.
Alexis is one of 3 300 Mensa members under the age of 18 in the US, with another 56 000 adults belonging to the group nationwide, a spokeswoman for the organisation said.
Read more: