Before revision: The symmetrical tonic neck reflex (STNR) is a primitive reflex that normally emerges during the first year of an infant's life and is diminished by the age of 2–3 years .
After revision: The symmetrical tonic neck reflex (STNR) is a primitive reflex that normally emerges during the first year of an infant's life and is diminished by the age of 9-10 months .