[Italiano] La regola dell'85%

# The 85% Rule: Why Getting Everything Right (Or Wrong) Kills Learning [Italian 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%. Too easy (95%) and brain ignores it. Too hard (55%) and frustration kills engagement. At 85%, learners experience "desirable difficulty." Neuroimaging shows prefrontal cortex fully engaged, dopamine activates during errors. This strengthens memory encoding. Amal's HLR adaptive system continuously monitors accuracy and adjusts difficulty, maintaining each child in this optimal 85% zone for maximum learning effectiveness.