Spanking and other forms of corporal punishment are still common worldwide, even though 24 countries have adopted bans on physical punishment since 1979, according to recent studies.
He was lead author of a study that conducted surveys in Brazil, Chile, Egypt, India, the Philippines and the United States, and found that rates of corporal punishment were "dramatically higher" in all communities "than published rates of official physical abuse in any country."
Corporal punishment was more widely used by mothers with fewer years of education.
Rates of corporal punishment vary widely among communities within the same country.
Harsh punishment by parents isn't less common in countries other than the US, and actually may be more common, especially in low- and middle-income countries.