Articles

Understanding intelligence testing.

• How IQ Tests Are Scored: From Raw Answers to a Deviation IQ

  A clear, honest look at how IQ tests turn raw answers into a score using norming, the deviation IQ, percentiles, and confidence ranges.

  3 min read

• Can You Improve Your IQ? A Balanced Look at What Actually Works

  Can you raise your IQ? An honest look at practice effects, education, the Flynn effect, brain-training claims, and what genuinely supports cognition.

  3 min read

• Fluid vs. Crystallized Intelligence: What the Cattell-Horn Model Means

  A plain-language look at fluid and crystallized intelligence in the Cattell-Horn model: definitions, examples, how each changes with age, and which test sections tap them.

  3 min read

• What an IQ Score Actually Means

  A clear, balanced guide to IQ scores: the 100 average, the bell curve, percentiles, and what a number can and cannot tell you.

  3 min read