[हिंदी] 85% का नियम

# The 85% Rule: Why Getting Everything Right (Or Wrong) Kills Learning [Hindi content summary] Psychologist Robert Björk's research shows learning is optimized at 85% accuracy. Material learned at this level is retained 50-70% longer than at 95%. At 95%, content is too easy and brain ignores it. At 55%, frustration kills engagement. At 85%, learners experience "desirable difficulty" — challenging but achievable. Error detection activates dopamine, strengthening memory. Neuroimaging shows prefrontal cortex fully engaged. Amal's HLR adaptive system continuously monitors accuracy and adjusts difficulty, maintaining each child in this optimal 85% learning zone.