At what age does the Moro reflex typically disappear?

The Moro reflex, also known as the startle reflex, typically disappears around 4 months of age. This reflex is characterized by an infant's reaction to a sudden loss of support, usually represented by an outstretching of the arms, a widening of the eyes, and the infant crying out. It serves an important purpose during the early months of life, alerting caregivers to the infant's distress or unexpected changes in their environment.

By around 4 months, as the infant's nervous system matures, they begin to develop more voluntary motor control and a greater sense of stability in their environment, leading to the gradual disappearance of this reflex. Infants will transition to more deliberate movements and responses, reflecting their growth in motor coordination and the development of a sense of security. This transition is a normal part of development and indicates that the child's brain is maturing appropriately.