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From the Advanced Phase stuttering then passes into the Mental Phase, where the mental strain is found to be greatly intensified and the disorder a distinct mental type instead of a physical or physical-mental trouble.
In this stage, the disorder should be easily eradicated. The duration of cases of Simple Stuttering is very slight, for the reason that Simple Stuttering soon passes into the Advanced Phase, which is of a physical-mental nature, exhibiting the symptoms of a mental disturbance as well as of a physical difficulty.
The Spasmodic Stage, however, is a form of difficulty somewhat akin to the Advanced Phase of Stuttering, for in this stage the trouble can be said to be of Physical-Mental nature instead of the purely physical disorder found in Elementary Stammering.