The experience of a sense of guilt for wrong-doing is necessary for the development of self-control. The guilt feelings will laterserve as a warning signal which the child can produce himself when an impulse to repeat the naughty act comes over him. When the child can produce his on warning signals, independent of the actual presence of the adult, he is on the way to developing a conscience.
The Magic Years: Understanding and Handling the Problems of Early Childhood (ed. Simon and Schuster, 2015) - ISBN: 9781501122828