Which type of tic disorder involves both motor and vocal tics that persist for at least one year?

Tourette's Disorder is characterized by the presence of both motor and vocal tics that have persisted over a period of at least one year. This disorder typically begins in childhood and is marked by the involuntary nature of the tics, which can include a variety of movements and sounds. The criteria for diagnosis in the DSM-5 specify that the tics must occur many times a day, nearly every day, or intermittently over a period of more than one year, which highlights the chronic nature of this condition.

In contrast, Persistent Tic Disorder only involves motor or vocal tics but does not include both; Provisional Tic Disorder involves tics present for less than one year, and Stereotypic Movement Disorder involves repetitive, non-functional movements not classified as tics. Therefore, the unique requirement for both motor and vocal tics along with the duration of one year makes Tourette's Disorder the correct answer.