400 million children under 5 experience violent discipline at home, including spanking and insults, according to UNICEF.

400 million children under 5, or 6 in 10 globally, experience violent physical or psychological discipline at home, including spanking and insults, according to new UNICEF estimates. Nearly 330 million children are physically punished. UNICEF emphasizes the importance of play in children's development and mental health, as well as the role of parents and caregivers in providing stimulation and interaction.