Can You Improve Your IQ? Evidence-Based Answer
Can brain training actually raise your IQ? What the research really shows about practice effects, education, and cognitive training — without the hype.
3 min read
IQ Insights
In-depth, expert-reviewed guides on IQ scores, intelligence testing, demographics and how to take a test — from the IQCognify editorial team.
Latest articles
Mensa IQ Requirements — Qualifying Scores & How to Join
What IQ you need for Mensa (98th percentile), which tests qualify, how Mensa testing works, and how to prepare — a complete, accurate guide.
3 min read
Genius IQ — What Score Counts as Genius? (140+ Explained)
What IQ score is considered genius? Where 140, 145 and 160 sit on the scale, how rare each is, and the famous high-IQ figures often cited.
4 min read
Average IQ by Age — How IQ Changes Across the Lifespan
How average IQ scores relate to age, why tests are age-normed, when cognitive abilities peak, and what changes (and doesn't) as you get older.
4 min read
How IQ Tests Work — Norming, Scoring & Reliability
How IQ tests are built and scored: standardization samples, the mean-100/SD-15 scale, item difficulty, reliability and validity — in plain English.
4 min read
IQ Percentile Chart & Calculator — Convert IQ to Percentile
Convert any IQ score to a percentile with our interactive calculator. See exactly what share of people you score above on the standard mean-100, SD-15 scale.
3 min read
IQ Tests for Children — What Parents Should Know
How IQ testing works for kids, what gifted thresholds mean, when testing helps, and why online tests are not a substitute for professional assessment.
4 min read
IQ Score Chart & Scale (2026) — Classifications & Percentiles
The full IQ score chart at a glance: look up any score to see its classification band, percentile, rarity, and share of the population, plus the bell curve — the complete reference scale (mean 100, SD 15).
3 min read
Average IQ by Country — Rankings, Data & Caveats
Average IQ estimates by country, how the data is gathered, the serious methodological caveats, and why national IQ comparisons are widely contested.
4 min read