Why it's important Kids start fibbing as early as age 2 or 3 ("I didn't spill that milk"), and lying can quickly become a hard-to-break habit. "But if you teach your child to tell the truth, that becomes a habit too," says Richard Eyre, coauthor of Teaching Your Children Values. And honest kids will have an easier time establishing solid, trusting relationships.
Bring it to life Try this exercise: Tell your child you're going to say something and then he has to let you know whether you're telling the truth or not. Throw a ball up in the air, catch it, and say, "I caught the ball." Ask him if that's true. Then rub your tummy and say, "I'm patting my head." Ask again. This exercise will help him distinguish between being honest and lying.