Left Handedness and Stuttering

In the 19 thirties and forties, in the university of ioa wher speech mythology was first developed as an anareof study. They were treating stutters, which were much more common in the early twentieth century than they are to today. And miraculously, or unbelievably, when i first saw the data, about a hundred % of people that they experimented with and were switched back from all kinds of ages, from as late as the seventh eir seventies, their stuttering went away. I found that hard to believe, but there were the records showing it.