Methods of Measuring Intelligence: Interpreting IQ Scores & Score Range


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question 1 of 3

Which famous person came up with the theory behind an intelligence quotient, or IQ?

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1. According to most standardized, modern IQ tests, what is the average IQ score?

2. Julia's mental age is higher than her chronological age and she is very good at problem solving and thinking creatively. Which of the following is most likely to be her IQ?

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About This Quiz & Worksheet

This quiz and worksheet will gauge your knowledge of the theory behind intelligence testing, as well as the development of IQ tests and interpretation of IQ test scores. You will be asked who created IQ testing, how the score is calculated and how to interpret the IQ score.

Quiz & Worksheet Goals

In these assessments you'll be tested on key facts about IQ testing, including:

  • The inventor of the theory behind the intelligence quotient (IQ)
  • What the average IQ score is
  • The equation used to calculate the IQ score
  • The range of average IQ scores and the percentage of the population that falls within that range

Skills Practiced

  • Problem solving - use acquired knowledge to properly calculate IQ scores
  • Defining key concepts - ensure that you can accurately define main phrases, such as chronological age and mental age
  • Information recall - access the knowledge you've gained to understand how an IQ test may evaluate a person's ability to learn or potential to succeed
  • Knowledge application - use your knowledge to answer questions about the principles behind the intelligence quotient and who invented it

Additional Learning

To learn more about the history and theory of intelligence testing, review the accompanying lesson on IQ History, Theory & Score Interpretation. This lesson covers the following objectives:

  • Understand the history behind intelligence testing
  • Describe who invented intelligence testing and why
  • Understand the significance of mental age compared to chronological age
  • Define the range of average intelligence
  • Understand the formula used to calculate intelligence quotient
  • Know how IQ scores are used in educational settings