— Comparison
Core Brain vs CognitiveMetrics
CognitiveMetrics hosts a community of peer-developed IQ tests. A different model entirely.
| CognitiveMetrics | Core Brain | |
|---|---|---|
| Format | Free community-built tests (CAIT, JCTI, etc.), peer-normed against community-submitted scores | Single integrated test, professionally calibrated against standard normal distribution, paid unlock |
| Methodology | Mixed (varies by test) | IRT 3PL Bayesian MAP |
| Confidence interval | Yes | Yes (95% CI) |
| Six-axis breakdown | No | Yes |
| Time | 15-30 min | 20 min |
| Cost | Free | $15 |
Verdict
CognitiveMetrics is the gold standard for the cognitive testing community — multiple tests, all free, peer-normed. Core Brain trades breadth for a single calibrated 20-min experience with normed scoring.
Try Core Brain
20 minutes, six cognitive axes, full normed IQ with 95% confidence interval. $15 unlock or take a promo code if you have one.
Which should you take?
Take CognitiveMetrics if:
- You want to take multiple different free tests
- You value peer-normed against high-IQ society members
- You're already in the r/cognitiveTesting community
Take Core Brain if:
- You want a calibrated 20-minute test with real IRT scoring
- You want to see WHICH cognitive axis you're strongest in, not just a single number
- You want a 95% confidence interval on your score (the mark of a real psychometric test)
- You want a downloadable certificate