Active Recall
Rereading feels productive but rarely builds durable memory. Active recall — retrieving instead of reviewing — is one of the best-evidenced techniques in learning science. Here’s why, and how to do it.
Forgetting Curve
You finish a chapter feeling like you’ve learned it — and a week later most of it is gone. That’s not a bad memory; it’s the forgetting curve, a predictable pattern of memory decay that applies to almost everyone. Understand its shape and you can bend it, using the two techniques that actually make learning stick.
Working Memory: What It Is and How to Expand It
Working memory is the cognitive function most directly responsible for how intelligent you seem — and how intelligent you feel. Understanding its biological capacity limit (4 ± 1 chunks), why the prefrontal cortex is uniquely vulnerable to stress and sleep deprivation, and the specific interventions with RCT evidence for improvement is the difference between vague advice and a precision protocol. This guide covers the neuroscience, the clinical evidence, and the four-layer optimisation protocol that Peter has refined across 40+ Creyos testing sessions.
