Vincent, an 8-year-old, has been diagnosed with tourette's syndrome, which often causes vocal tics where he can't control what he says. it horrifies vincent that he repeatedly blurts out words that have nothing to do with what he is thinking or what people around him are discussing at the moment. vincent also experiences embarrassing uncontrollable muscle spasms of his head and neck. what category of disorder is tourette's syndrome best categorized as?