Shawn Videan - MSU Service Status

The most common types of vocal tics include grunting, throat clearing, humming, and stuttering. Tics develop in the early years of the individual, typically from the age of 10-12, and then decrease as age increases. Typically, subjects are virtually tic-free by the time they are in adulthood. Robertson, Mary M., and Simon Baron-Cohen. ................
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