The grasp reflex is an automatic response seen in infants, where they instinctively close their fingers around an object that touches their palm. This reflex is present at birth and typically fades by around six months of age. It is believed to be a survival mechanism, helping infants cling to their caregivers. This reflex is part of a group of primitive reflexes that are crucial for early development. The grasp reflex can be tested by gently placing a finger or object in a baby's hand. If the baby grasps it tightly, this indicates that the reflex is functioning as expected.