Should parents be troubled when their kids start to deceive them? Odds are, most of us would say yes. We believe honesty is a moral imperative, and we try to instill this belief in our children. Classic morality tales like “The Boy Who Cried Wolf” and “Pinocchio” speak to the dangers of dishonesty, and children who lie a lot, or who start lying at a young age, are often seen as developmentally abnormal, primed for trouble later in life. But research suggests the opposite is true. Lying is not only normal; it’s also a sign of intelligence.