By the time he was one year old, Aidan Na (right) could recognise and recite the alphabet.
And before he turned two, he could already count up to 100 and spoke in full sentences.
These days, the 3½-year-old is exploring complex polygons and 3-D shapes while his classmates in nursery are learning about basic shapes like squares and triangles.
Aidan's 37-year-old father, Mr Allen Na, who is a regional market development manager in the life sciences and biotechnology sector, says that his child's "quick development pace made us curious to know how he would fare in an IQ test".
Aidan's mother, Madam Vivian Yeo, is a clinical research manager with a pharmaceutical company.
"He would observe us unlocking our smartphones and memorise the password combination so that he could access YouTube to watch videos relating to alphabets, shapes and numbers.
"He was even able to navigate the different channels with the search tool independently," says the proud father, who paid $600 for the IQ test.
The test scores indicate that Aidan has an IQ of 142 - which is in the 99.7th percentile of his age group - his father tells The New Paper on Sunday.