“Mae’r hyn yr a wyddwn am beth sydd ei angen ar blant i dyfu a ffynnu wedi datblygu cryn dipyn dros yr ugain mlynedd ddiwethaf. Gwyddwn bellach y gall cosb gorfforol gael effaith hirdymor negyddol ar gyfleoedd  bywyd plant. At hynny, gwyddwn ei fod yn gosb aneffeithiol.
“Our knowledge of what children need to grow and thrive has developed considerably over the last twenty years. We now know that physical punishment can have negative long term impacts on a child’s life chances and we also know it is an ineffective punishment.