Is your IQ normal for your age?
That's a smart question to ask, because IQ is not the same at 12 and at 40.
Your brain changes. Here is the real data based on the Wechsler scales (WAIS-IV).
Average IQ by Age Chart
• 6-12 years: Average IQ 100 - Normal development, logic is building
• 13-17 years: Average IQ 102 - Peak for speed and memory
• 18-25 years: Average IQ 105 - Intellectual peak, strongest reasoning
• 26-40 years: Average IQ 100 - Stable, crystallized intelligence takes over
• 41-60 years: Average IQ 97 - Slight drop in speed, but more wisdom
• 60+ years: Average IQ 90-95 - Slower speed, experience compensates
Why Does IQ Change With Age?
Unlike what most people think, IQ is not 100% fixed.
At 20 years old, your brain is the fastest. You solve problems quickly. This is called fluid intelligence.
At 40 years old, you are slower but much smarter. You use your experience, your vocabulary, your knowledge. This is called crystallized intelligence. This is why the best CEOs and managers are 40-50 years old.
So having an IQ of 95 at 50 does NOT mean you are less intelligent than at 20. You are just intelligent in a different way.
Can my IQ increase with age?
Your overall score stays stable, but you can improve specific skills like vocabulary, logic and memory with training.
What is the average IQ for a 14-year-old?
100-102. If your child is between 90 and 110, they are perfectly average.
What is a good IQ for a 25-year-old?
Anything above 110 is above average. Above 120 is superior.
Final Word
Don't compare yourself to other age groups. The most important thing is not your score at one moment, but how you use your intelligence every day.