The Yale Global Tic Severity Scale (YGTSS) is a psychological measure designed to assess the severity and frequency of symptoms of disorders such as tic disorder, Tourette syndrome, and obsessive-compulsive disorder, in children and adolescents between ages 6 and 17.[1][2]
The questionnaire is divided into three parts over the span of 17 pages: one section identifies symptoms of motor and phonic tics, severity, and age of onset. Another section concerns OCD symptoms, severity, and age of onset, and the last section concerns environmental effects on symptoms. The YGTSS is completed by the parent and takes approximately 15–20 minutes. The questionnaire has shown good reliability and validity in assessing tic severity in recent studies.[3][4][5]
^Martino D, Pringsheim TM, Cavanna AE, et al. (March 2017). "Systematic review of severity scales and screening instruments for tics: Critique and recommendations". Mov. Disord. (Review). 32 (3): 467–473. doi:10.1002/mds.26891. PMC 5482361. PMID 28071825.
^Sukhodolsky DG, Gladstone TR, Kaushal SA, Piasecka JB, Leckman JF (2017). "Tics and Tourette Syndrome". In Matson JL (ed.). Handbook of Childhood Psychopathology and Developmental Disabilities Treatment. Autism and Child Psychopathology Series. p. 248.
^Cite error: The named reference LeckmanEtAl1989 was invoked but never defined (see the help page).
^Cite error: The named reference KircanskiEtAl2010 was invoked but never defined (see the help page).
^Cite error: The named reference StorchEtAl2005 was invoked but never defined (see the help page).
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