Friday, June 29, 2007

Subtypes in stuttering

Here are some possible factors that might help divide people who stutter into different sub-types. Here, sub-type is on the cause of stuttering, not on any symptoms like covert vs overt, speech with many blocks vs speech with many fillers/hesitations, etc.

-people who have stuttering genes/gene combinations that cause stuttering vs people that dont.
-people who have stuttering genes/gene combinations that increase probability of having a stutter vs people that dont
-people who have stuttering genes/gene combinations vs people who had a neurological incident
-people who started stuttering at age 3-5 vs people who started stuttering later.
-people who improve/worsen fluency with drug A vs people who are not impacted.
-people who have long-term gains in fluency after therapy vs people who dont.
-people who started stuttering and recovered vs people who never recovered.

Factors that are no relevant in my view to divide into groups with different causes:
-gender
-handedness

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