The Selective Mutism Questionnaire: Data from typically developing children and children with selective mutism
Oerbeck B, Overgaard KR, Bergman RL, Pripp AH, Kristensen H.
Selective mutism occurs in 0.03-1% of children and is usually addressed with behavioural therapy. This paper describes a recently validated scale, the Selective Mutism Questionnaire (SMQ), that can be used to confirm the condition and track symptom progression.
https://journals.sagepub.com/doi/full/10.1177/1359104520914695