Alphabet Graphic (IMAGE) Johns Hopkins University Caption This chart groups letters based on how similar they looked to test participants who didn't know Arabic and to test participants who were experts in the language. Johns Hopkins researchers found the two groups saw the letters quite differently. Credit Robert W. Wiley/JHU Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.