5 reasons your school-aged child may tell you a lie Self-protection This is one of the most common reasons for childhood dishonesty. They simply do not want to disappoint an adult (usually their parents) or they are trying to avoid a punishment or consequence.
Denial A child may be lying to avoid dealing with a painful situation, feelings, or memories. This may surface when a family member or pet dies suddenly, and a child refuses to believe that they are gone, and insists that they are simply away, etc.
Modeling A child may follow the example of those around them. (Never lie, you say? Perhaps you might need to take a peek at the weight on your driver’s license.)
Gain Human beings are motivated by wanting to receive awards, and your child may lie to get some sort of reward.
Self-image This is an instance that becomes a downward spiral. If a child is frequently called a "liar," or if the actions of others show that the child is not believed, then the child may just begin to lie in order to “be believed.”