Your maturing preschooler probably gives you plenty of reason to feel proud: when he remembers to say "thank you," for example, or gives you an empathetic hug if he sees you're sad. So you may be thrown for a loop the first time your child tells a bald-faced lie. It's not deviance. An active imagination and a Tendency to forget what happened ten minutes ago explain away most Lying in this age group. 

For preschoolers, the line between fantasy and reality is blurry, which may explain their tendency to lie.

Your child's intent isn't to deceive you. Rather, she wants to say what will make you happy — even if it isn't true. Make it less scary for her to tell the truth and you'll help her avoid fibbing. For example, if she denies drawing on the wall, calmly help her clean up and point out that crayons are for coloring books and paper. Counter intuitively, humor can be another useful response. Go along with the tall tale and embroider it yourself, and your child will probably catch on to the absurdity of her story.

Two-year-olds' lies also sprout from their active imaginations. They come to believe certain things
they've imagined really did happen: Maybe it was the dragon under the bed who messed up all those
clothes all over the floor.

And sometimes what seems like a lie is sheer forgetfulness. You ask, "Did you put your finger in the
frosting of that birthday cake?" and if it happened much earlier in a busy day, she just might not be sure whether she did it or her big brother did.

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