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From: Dennis Drayna
Date: 21 Oct 2011
Time: 14:20:00 -0500
Remote Name: 165.112.47.66
In general no. In an early landmark study of stuttering genetics, it was shown that although stuttering clusters in families, the severity of stuttering does not. We see this in our families carrying known stuttering mutations. Some of these individuals stutter quite severely, while others with the same mutation stutter fairly mildly.