Yn ôl yr arolwg Agweddau Rhieni tuag at Reoli Ymddygiad Plant Ifanc  2017 dim ond 11% o rieni plant bach a nododd eu bod wedi smacio eu plant yn ystod y chwe mis diwethaf fel ffordd o reoli eu hymddygiad, hanner y ffigwr yn 2015 sef 22%.
The Parental Attitudes Towards Managing Young Children's Behaviour 2017 survey also found only 11% of parents with young children reported they had smacked their children in the last six months as a way of managing their behaviour, half that in 2015 at 22%.