6 min readMethodology
How IQ Scores Are Calculated
An IQ score is a rank, not a grade: how clinical tests build scaled, index and Full Scale scores, bell-curve rarity (1 in 44 at 130), and how an online estimate differs.
Blog — #iq
Original research, methodology deep-dives, and comparison guides for personality assessments.
- 5 min readResearch
Can You Increase Your IQ?
What the evidence supports: a stable adult rank, 1–5 IQ points per year of schooling, why brain-training gains rarely transfer, and what the Flynn effect shows.
- 5 min readResearch
Average IQ by Age
Why clinical IQ is always compared with your age group, when speed, reasoning and vocabulary each peak, and why My Path's online estimate is not age-normed.
- 5 min readFrameworks
The g Factor Explained: The One Thing Every Cognitive Test Has in Common
Spearman's g and the positive manifold, the competing explanations for it, how factor analysis turns many tests into one score, and what g does and doesn't predict.
- 5 min readFrameworks
Emotional Intelligence (EQ) vs Cognitive Intelligence
EQ vs IQ decoded: overlaps, myths, trait vs ability measures, trainable empathy & regulation habits—and where emotion skills strengthen reasoning clarity.
- 6 min readFrameworks
What IQ Tests Actually Measure
What IQ tests measure (g and five broad indexes), what scores predict, including the 2022 revision for job performance, what they miss, and how to judge an online test.
- 7 min readComparisons
Paid vs Free IQ Tests Online
What paying for an online IQ test buys (usually little), the red flags, why length matters more than price, and when only a licensed psychologist's assessment will do.
- 6 min readMethodology
Can You Prepare for an IQ Test?
What preparation can and can't do: retest gains of about 4 points, why drilling and brain training don't help, sleep and test conditions, and clinical-test advice.