Yale Global Tic Severity Scale.

YGTSS

What it measures

Tic severity in Tourette syndrome and other tic disorders - motor and phonic tics each rated on number, frequency, intensity, complexity and interference, plus a separate global impairment rating

Length and format

A tic-symptom checklist (approx 50 motor and phonic tic descriptors) plus 10 severity dimension ratings and 1 impairment rating. clinician 0-5 ratings per dimension (motor 0-25, phonic 0-25, total tic score 0-50) and a 0-50 impairment rating (clinician-rated/interview)

Language versions

Canadian French, ES, PL, DE, NL, IT, ZH, JA and others (approx)

Normative data

No normative data held in our reference library for this instrument. That is a statement about our library, not about the published literature.

Licence

open with attribution

Licence classification is a research judgement by the catalogue’s authors, not legal advice, and it can be out of date. Confirm terms with the copyright holder or publisher before using an instrument, especially for commercial use.

Reference

Leckman, J.F., Riddle, M.A., Hardin, M.T., et al. (1989). The Yale Global Tic Severity Scale: initial testing of a clinician-rated scale of tic severity. Journal of the American Academy of Child and Adolescent Psychiatry, 28(4), 566-573.