The Brain Blog
Memory, attention, IQ, emotions: understand your brain, backed by research
🧠 Brain
Do we only use 10 percent of the brain? The myth explained
Do we really use only 10 percent of our brain? Where the myth comes from, why brain scans prove it wrong, and the true story of the man with a squeezed brain.
October 29, 2026 🧩 IQ & intelligenceAverage IQ: what 100, 115 or 130 really mean (age, country)
The average IQ is 100 by design. What scores like 85, 115 or 130 mean, average IQ by age and by country, and why national IQ rankings mislead.
October 29, 2026 ⚡ Reflexes & speedAverage reaction time: the real numbers (human, driving)
Average human reaction time: about 0.2 s to a simple signal, close to a full second when driving. The real numbers, what changes them, and a free test.
October 29, 2026 🧩 IQ & intelligenceFree IQ test: how to find one you can actually trust
Looking for a free IQ test? What an online test really measures, 6 signs of a legit test, and the traps to avoid, like the hidden paid result at the end.
October 28, 2026