You’ve received an IQ test report — perhaps for yourself, your child, or a client. It’s filled with numbers, percentiles, confidence intervals, and subtest scores. What does it all mean? This guide walks you through interpreting a cognitive ability report the way a psychometrician would, helping you understand not just …
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 …
The Wechsler Adult Intelligence Scale is the most widely used IQ test in the world. When Pearson released the WAIS-V in 2024 — the first major revision since the WAIS-IV appeared in 2008 — it introduced significant structural changes that affect how cognitive ability is measured, scored, and interpreted. Whether …
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 …
The Tellegen & Briggs Formula 4 Calculator, available at Cogn-IQ.org, is a specialized tool designed to help professionals recalibrate and interpret scores from psychological assessments. It provides an efficient way to calculate the Tellegen-Briggs Index (TBI), which is particularly useful when standardization data is unavailable or limited. Background The Tellegen-Briggs …
The Wechsler Adult Intelligence Scale (WAIS), developed in 1955 by David Wechsler, introduced a broader and more dynamic approach to assessing cognitive abilities. Over the years, it has been refined through several editions, becoming one of the most widely used tools in psychological and neurocognitive evaluations. This post reviews its …
