These days infants' hearing (including my own two childrens') are tested at birth, without them having to participate in the process at all (they can even be as

These days infants' hearing (including my own two childrens') are tested at birth, without them having to participate in the process at all (they can even be asleep)! https://www.audiology.org/consumers-and-patients/children-and-hearing-loss/newborn-hearing-screening/ https://www.audiology.org/consumers-and-patients/children-an...