Your child did a piece of drawing or painting and he shows it to you. What is your immediate response? There's a high chance that it'll be "Good job!" or "Lovely!" or "What a pretty picture!" or even "Oh I love it". I hear these all the time when it's home time and the children show their parents their artwork.
What's wrong with these responses, you might be thinking. After all, aren't they just positive reinforcements that aim at boosting children's self-esteem? No they aren't. Let me explain why.