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La lettura è una delle attività più difficili per i bambini con dislessia, ma può essere migliorata con l'uso di filtri verdi. Lo rileva uno studio di un team di ricercatori brasiliani e francesi, pubblicato su Research in Developmental Disabilities. I filtri colorati per il trattamento delle disturbi dell'apprendimento sono stati brevettati per la prima volta nel 1983.
Gli studiosi hanno voluto approfondirne l'utilizzo in 18 bambini con dislessia e 18 senza, selezionati per lo studio all'ospedale Robert Debré di Parigi. "Sono disponibili 12 colori, ma ne abbiamo scelti due, giallo e verde, perché un test molto lungo sarebbe stato troppo impegnativo", spiega l'autore principale dello studio, José Angelo Barela.
"Un bambino con dislessia deve fissare lo sguardo sulle parole per un tempo più lungo per comprendere un testo. La velocità di lettura è di conseguenza più lenta", aggiunge Barela. I bambini con dislessia leggevano invece più velocemente quando veniva applicato il filtro verde.
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