1. What is IQ Calculation by Age?

The IQ (Intelligence Quotient) calculation by age compares a person's mental age to their chronological age to estimate cognitive ability. This traditional method provides a ratio IQ score that indicates how a person's mental development compares to their peers.

2. How Does the Calculator Work?

The calculator uses the classic IQ formula:

Where:

• Mental Age — Cognitive ability level (determined by tests)
• Chronological Age — Actual age in years

Explanation: A score of 100 means mental age equals chronological age. Scores above 100 indicate advanced cognitive ability for age, while scores below 100 suggest delayed cognitive development.

3. Importance of IQ Calculation

Details: While modern IQ tests use different methods, this age-based calculation remains useful for understanding cognitive development in children and comparing mental abilities across different age groups.

4. Using the Calculator

Tips: Enter mental age (based on cognitive testing) and chronological age (actual age) in years. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is considered a normal IQ score?
A: Average IQ is 100. Scores between 85-115 are considered within the normal range.

Q2: How is mental age determined?
A: Mental age is typically assessed through standardized cognitive tests that evaluate various mental abilities.

Q3: Is this the same as modern IQ tests?
A: Modern tests use deviation IQ with a mean of 100 and standard deviation of 15, but this age-based method is the original concept.

Q4: Can adults use this calculation?
A: It's most meaningful for children as cognitive abilities stabilize in adulthood.

Q5: What are the limitations of this method?
A: It doesn't account for the fact that cognitive development slows with age, making it less accurate for older individuals.