The Moro reflex is often called a startle reflex because it usually occurs when a baby is startled by a loud sound or movement. In response to the sound, the baby throws back his or her head, throws out his or her arms and legs, cries, then pulls his or her arms and legs back in. Sometimes, a baby’s own cries can startle him or her, initiating this reflex. The Moro reflex lasts until the baby is about 5 to 6 months old. When a baby’s head is turned to one side, the arm on that side stretches out and the opposite arm bends up at the elbow. This is often called the “fencing” position. The tonic neck reflex lasts until the baby is about 6 to 7 months old.
At first, all of a baby’s cries sound similar, but parents soon recognize different types of cries for hunger, discomfort, frustration, fatigue and even loneliness. Sometimes, a baby’s cries can easily be answered with a feeding or a diaper change. Other times, the cause of the crying can be a mystery, and the crying stops as quickly as it begins. Regardless of the cause, responding to your baby’s cries with a comforting touch and words are essential in helping your baby learn to trust you and rely on you for love and security. You may also use warmth and rocking movements to comfort your baby.

