You’ve received an IQ test report — for yourself, your child, or a client — and what should be a clean answer is a thicket of numbers, percentiles, confidence intervals, index scores, scaled scores, and qualitative descriptors. This guide walks through what each piece actually means and how a psychometrician …
What does research say about IQ in autism? Learn about cognitive profiles in ASD, why traditional IQ tests may be misleading, and how intelligence varies across the autism spectrum.
Does ADHD affect IQ scores? Explore what research reveals about the relationship between ADHD, attention, and measured intelligence — including why IQ tests may underestimate ability in ADHD.
Considering an IQ test for your child? Learn when cognitive testing is appropriate, which tests are used, what to expect, and how to interpret the results — from a psychometrician.
IQ tests are among the most scrutinized instruments in all of psychology. Critics argue they are culturally biased, too narrow to capture real intelligence, and used to justify inequality. Defenders argue they are the most rigorously validated psychological measures in existence. Both camps have valid points — and understanding where …
Pearson released the Wechsler Adult Intelligence Scale, Fifth Edition (WAIS-5) in late 2024 — the first major revision since the WAIS-IV appeared in 2008. For the world’s most widely administered adult IQ test, sixteen years between editions is a long time, and the new version reflects what cognitive science learned …
A quick search for “IQ test” returns dozens of websites promising to measure your intelligence in 10 minutes. Meanwhile, a professional cognitive assessment takes 2–3 hours, costs hundreds of dollars, and requires a trained psychologist. Are the free online versions worth anything, or are they little more than entertainment? The …
Psychometrics, a specialized branch within psychology, is dedicated to the theory and methodology of psychological measurement. This discipline encompasses the development and refinement of testing instruments, measurement techniques, and assessment procedures aimed at quantifying latent psychological constructs—attributes not directly observable but inferable through systematic analysis. Such constructs include intelligence, personality …
A psychologist administering a partial Wechsler battery — say, four core subtests rather than the full ten — needs a way to convert the resulting subtest scores into a composite IQ-style scale score. The full battery has published norms with means, standard deviations, and reliability coefficients tabulated by age band; …
The Wechsler Adult Intelligence Scale is the most widely administered individual IQ test in clinical practice, and has been for most of the 70 years since David Wechsler published the first version in 1955. Its dominance is partly a matter of design choices Wechsler made early — separating verbal and …
