Why do babies enjoy playing peek-a-boo?

Babies enjoy playing peek-a-boo primarily because they like having mild surprises. This game engages infants by creating a sense of anticipation and excitement. When a familiar face suddenly reappears after being hidden, it elicits joy and laughter, illustrating the concept of object permanence, which is the understanding that objects continue to exist even when they cannot be seen. This playful interaction helps to support cognitive development, as babies learn about relationships, trust, and social engagement through such simple yet effective games. The element of surprise is crucial, making peek-a-boo an interactive experience that captures their attention and encourages social bonding with caregivers.