Answers:
126 is a very respectable IQ score at any age. Although nearly impossible to measure, one's 'true IQ' does not vary with age. IQ stands for intelligence quotient, and is calculated by dividing 'intellectual age' by 'chronological age' (real age). The result is then multiplied by 100.
For instance, suppose a 25 year-old is determined to have the intelligence of a typical 20 year-old. Then this person's IQ is given by,
IQ = [intellectual age / actual age] X 100
= [20/25] X 100
= 0.8 X 100
= 80.
This person's IQ, 80, indicates less than average intelligence.
In your case, a twelve year-old with IQ=126 has an intellectual age equivalent to that of a fifteen year-old. To see this, we substitute 12 for actual age, and 126 for IQ in the IQ equation, giving,
126 = [intellectual age / 12] X 100. The intellectual age that makes this a true statement is 15.12 years.
It should be noted that an IQ test score is an approximation to 'true' IQ. As such, one's test score can vary by some ten or so points upon different testings. Thus, the twelve year-old in question likely has true IQ somewhere between 116 and 136. Variability notwithstanding, 126 is a very good score by any account (average being 100).
Regards,
Rich B.
That's an excellent score for a 12 year old. Normal is 90-110.
It's a very good score.
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