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This book treats the subject in a most original manner. The author leads up logically to his conclusions by discussing in the first chapters of the first volume many psychological facts, and especially those which pertain to speech. Different, aspects of their bearing on the different phases and peculiarities of stammering are taken up. After an exhaustive consideration of the psychological conditions which are present in stammering Bluemel comes to the conclusion that "the primary cause of stammering is auditory amnesia. The secondary or auxiliary causes are bewilderment, perversion of the verbal image, autosuggestion giving rise to inhibition of the will and finally to fear."
The efforts of most systems leading to the correction of stammering have been directed toward these secondary or auxiliary causes and have been successful only inasmuch as these causes overrule the picture. For instance, the elocutionary systems will usually overcome the physical errors such
Stammering and Cognate Defects of Speech.. Arch Intern Med (Chic). 1913;XII(6):799. doi:10.1001/archinte.1913.00070060191013