(ANSA) - ROME, JUN 12 - A 15-year-old Sicilian boy has been tested as being the youngest person in the world with a 'super-memory' meaning he remembers the precise date of everything he has ever done, and everything that has ever happened to him. The unnamed boy's extraordinary ability is described in the journal Cortex by Valerio Santangelo of the University of Perugia and Patrizia Campolongo of Sapienza University of Rome. "He's the youngest person in the world identified with hyperthymesia...