People with selective mutism do not initiate speech, and do not respond when spoken to in situations where this conversation is expected.2 Children with selective mutism may speak at home and to parents for instance, but not in front of more distant family members or family friends or at school.2
References:
1.Penninx BW, Pine DS, Holmes EA, Reif A. Anxiety disorders. Lancet 2021; 397 (10277): 914–927.
