Why Is My Child Lying? A Pediatrician Explains What It Really Means

Why does your child lie, even when the truth seems obvious?

Maybe your five-year-old insists they didn't eat the cookie while chocolate is still on their face. Maybe your eight-year-old swears they brushed their teeth when they clearly didn't. Or maybe your teenager tells you they were somewhere completely different from where you later discover they were.

For parents, lying can trigger some big fears: Have I raised a dishonest child? Can I trust them? Should there be a bigger consequence?

In this episode of Mom Doc Talk, board-certified pediatrician, parenting educator, and mom Dr. Kristen Cook explains why childhood lying is often much more complicated than simple dishonesty.

Kristen walks through how lying changes from toddlerhood through adolescence and explains why imagination, fear, avoidance, executive functioning challenges, anxiety, trauma, and the growing desire for independence can all influence whether a child tells the truth.

You'll also learn why some common parenting responses can unintentionally make lying worse, including yelling, labeling a child as a "liar," asking questions when you already know the answer, and creating an environment where admitting mistakes feels unsafe.

Most importantly, Kristen explains how parents can build honesty through connection, accountability, emotional safety, and trust.

Because the goal isn't simply to catch children lying.

It's to raise children who feel safe enough to tell the truth, even when the truth is uncomfortable.

What You'll Learn

• Why children lie at different developmental stages

• Why toddlers may say something untrue without intentionally lying

• The important difference between imagination and deception

• Why preschool fantasy is a healthy part of development

• Why school-age children often lie to avoid consequences

• Why teenage lying often involves independence and privacy

• How fear and harsh punishment can make honesty feel unsafe

• Why children with ADHD may appear dishonest when executive functioning is the real challenge

• How anxiety can contribute to avoidance and lying

• Why significant trauma can make dishonesty a survival strategy

• What prosocial or "white lies" look like in older children

• Why asking questions you already know the answer to can create a trap

• Why parents should address dishonest behavior without labeling the child

• How modeling honesty influences children's behavior

• How to praise truth-telling without removing appropriate consequences

• Why connection and emotional safety are essential to building trust

Order Dr. Kristen Cook's Book

Parenting Redefined: A Guide to Understanding and Nurturing Your Child's Behavior to Help Them Thrive

If you enjoy Mom Doc Talk and want practical, evidence-based parenting guidance with compassion, science-backed strategies, and real-world parenting support, grab your copy here:

Amazon link

If this episode resonated with you, please share it with a friend, subscribe to Mom Doc Talk, and leave a review to help more parents find these conversations.

Podcast Disclaimer

The information presented in this podcast is for educational and informational purposes only. It is not a substitution for professional medical advice, diagnosis, or treatment. Always seek the advice of your healthcare provider for medical concerns. All of the opinions are of Dr. Kristen Cook and do not reflect the opinions of her employer nor the hospitals she is affiliated with. The authors and publishers of this podcast do not assume any responsibility for errors, omissions, or consequences of using the information provided.

If you enjoyed this episode, please subscribe and leave a review wherever you get your podcasts!

Get a copy of Kristen's Upcoming Book: Parenting Redefined HERE

Follow Dr. Cook at: https://www.facebook.com/MomDocTalk/

Intagram: https://www.instagram.com/momdoctalk_kcmd/
https://twitter.com/momdoctalk
https://www.tiktok.com/@momdoctalk_kcmd?lang=en

Transcript

0:33

Welcome to Mom Doc Talk with Dr. Kristen Cook, where real-life parenting meets medical expertise. I'm your host, a pediatrician with over a decade of experience, and just like you, a parent navigating the ups and downs of raising good human beings. With stories from my own experiences of mom, lessons in child development, and insights based on scientific evidence, I'm here to share practical strategies that work. Let's dive into this journey together and make parenting feel a little more peaceful and a lot more rewarding.(Music) Hi everyone, and welcome back to Mom Doc Talk with Dr. Kristen Cook. I'm your host, a pediatrician, mom of two great kids, and someone who has spent years helping parents understand that behavior is actually a form of communication. Today's episode tackles one of the parenting topics that creates some of the biggest emotional reactions. Your sweet five-year-old looks you straight in the eye and says, "I didn't eat that cookie," while chocolate is literally covering their face. Your eight-year-old insists that they already brushed their teeth, but their breath indicates otherwise. Your teenager tells you that they were studying at a friend's house, only for you to discover that they were somewhere completely different. Immediately, many parents begin asking themselves, "Why is my child lying? Have I raised a dishonest child? Should they be punished? Can I trust them anymore?" The truth is this, lying is one of the most misunderstood childhood behaviors. Most of the lies that children tell are not an indication that you're doing something wrong as a parent. Instead, lying often tells us something about where a child is developed mentally, emotionally, or neurologically. Today I'm going to discuss why children lie, the difference between imagination and deception, fear-based lying, ADHD and dishonesty, anxiety and lying, trauma and survival lying, lying behaviors based on age, the parenting mistakes that unintentionally encourage lying, and perhaps most importantly, how to raise honest children without shame, fear, or constant punishment. Because honesty isn't something we force, it's something we build. Before I discuss lying, I want to talk about telling the truth. It's important to teach children the importance of telling the truth as early as possible. As parents, we need to model this behavior, which means that our children need to watch us telling the truth on a regular basis. Even before my kids could understand the concept of lying, Chad and I used to say telling the truth is important. Being dishonest will get you in much more trouble than being honest. And this has worked great for our family because they were introduced to the importance of honesty at a young age. I truly believe that our focus on emotional support has created a home environment that allows for honesty, even when it is uncomfortable. My kids understand that all of their thoughts are valid and important, that all of their emotions are safe to feel, express, and verbalize without fear of punishment. In the majority of cases, thoughts lead to emotions and emotions lead to actions. The behaviors can be understood if the thoughts and emotions are understood and validated. Before we talk about children, let's talk about adults. Every adult listening to this podcast episode has lied. In fact, most adults tell up to two lies each day. Maybe you've told someone,"Don't worry, I'm almost there." Or, "I'm fine." Or, "Those shoes are fabulous." Sometimes we lie to protect ourselves. Sometimes to avoid hurting someone else. Sometimes we lie to avoid conflict. Sometimes we lie because we're embarrassed. Children aren't different. They're simply much less skilled at it. When children lie, they're usually trying to solve a problem. That problem might be avoiding punishment, avoiding disappointment, protecting themselves, gaining approval, avoiding embarrassment, protecting someone else's feelings, or wanting something badly. Understanding why they're lying is much more important than simply catching them. Let's break it down by age. Toddlers don't truly understand lying. If you ask, "Did you spill the milk?" they may genuinely answer "No," even while standing in the puddle. This isn't manipulation. They may be experimenting with imagination, or they may be trying to avoid punishment. Or they may not remember the incident in question. If they push their friend off a swing at daycare at 10am and you ask them to explain the situation at 6pm, they are not lying. They simply don't remember. Let's move on to preschoolers. At this stage, imagination is exploding. This is why preschoolers tell incredible stories. I saw a dinosaur today. My teddy bear drove me to school. I can fly. Parents often panic. My child lies all the time. No, your child is experimenting with imagination. Fantasy is healthy. Pretend play actually supports language development, creativity, emotional processing, problem solving, and social skills. Fantasy isn't dishonesty, it's development. Next up is school-age children. Now children of this age understand the truth. This is where lying becomes more intentional. Yet lying is not always manipulative. Sometimes it is an expression of self-preservation. When school-age children say,"I forgot my homework,""I didn't hit him," "I already cleaned my room." These lies usually have one purpose, avoidance of the consequences of their actions. They don't want to get into trouble. Finally, let's discuss teenagers. Teen lying changes dramatically. It becomes more sophisticated. Teenagers may lie about where they are, who they're with, dating, substance use, grades, social media use, screen time, and sexual behaviors. Many of these lies aren't because teens are bad. They're trying to increase independence while avoiding parental restriction. Understanding that doesn't mean accepting their dishonesty. It means responding thoughtfully rather than reactively. One of the biggest mistakes parents make is treating imagination like dishonesty. Imagine your four-year-old says, "I have a pet dragon." The correct response?"Oh, really? Tell me more about your dragon." The incorrect response?"That's a lie. We don't lie in our house." Children need imaginative play. It develops creativity. Now, compare that to "I didn't color on the wall." Those are very different situations. Fantasy creates stories. Dishonesty hides reality. Learning to recognize the difference helps parents avoid unnecessary power struggles. Here's another truth when it comes to parenting a child who lies. Children lie more when they're afraid. Afraid of punishment. Afraid of yelling. Afraid of disappointing you. Afraid you'll stop loving them. Afraid you'll think that they're bad. Imagine accidentally breaking your parents' favorite mug. If every mistake has historically resulted in screaming, what are you likely to do? Hide the evidence. Children do the same thing. Fear makes honesty unsafe. One of the best ways to encourage truthfulness is to make honesty feel emotionally safe. That doesn't mean eliminating consequences. It means separating the mistake from a child's worth. Instead of saying, "You're such a liar," try, "Thank you for telling me the truth. Now let's solve this together." Notice the difference. One attacks identity. The other builds integrity. Let's move on to discuss lying behaviors in children who have ADHD. This surprises many parents. Children with ADHD are not more dishonest than other children. However, uncontrolled ADHD symptoms can make it appear that way. Examples include, "I forgot.""I didn't hear you.""I thought I already did that." Executive functioning challenges affect working memory, organization, time awareness, planning, and follow-through. Sometimes what sounds like lying is actually an accurate recall or difficulty tracking what happened. Other times children with ADHD may lie impulsively because they're trying to end an uncomfortable conversation or avoid immediate consequences without thinking through the long-term impact. That doesn't excuse the dishonesty, but it changes how we respond. Helping a child strengthen executive functioning, using visual reminders, and pausing before answering can be more effective than assuming malicious intent. Now let's talk about anxious children. Anxious children often lie to reduce fear. Examples include, "No, I don't have any homework today." Or, "I already studied." Or, "My stomach hurts. Can I stay home from school?" Sometimes lying feels safer than admitting they're overwhelmed. Their nervous system is trying to escape discomfort. When anxiety is addressed appropriately, the need to lie often decreases. Children who have experienced trauma may lie differently."I need to be honest with you. Every human being experiences trauma. Some traumatic experiences are minor." However, for children who experience significant trauma, lying can become a survival strategy. If telling the truth previously resulted in abuse, neglect, humiliation, or unpredictable consequences, their brain may learn truth isn't safe. These children aren't being manipulative. Their nervous system is protecting them. Healing requires consistency, predictability, and emotionally safe relationships, not harsher punishment. School-aged children and teenagers may begin using what psychologists call"pro-social lies." These are often referred to as"little white lies." These lies are often made in attempt to preserve relationships or to avoid hurting someone's feelings. Examples include, "I like your new outfit." Or, "Sorry, I can't. I'm busy that day." At the same time, adolescence brings increased sensitivity to peer approval. Teens may hide behaviors because they're afraid of losing privileges or disappointing trusted adults. The goal is to create a home where honesty is valued even when the truth is difficult. One helpful approach is to let your teenager know, "I may not like every choice you make, but I always want to know the truth." We can solve problems much more effectively when we're honest with each other. Sometimes, without realizing it, we make honesty harder. Here are some common mistakes that people make. Mistake number one is overreacting. If every mistake leads to yelling, children learn to hide mistakes. Mistake number two is punishing the truth more than the lie. Imagine a child finally admits,"Yeah, I'm the one that broke it." If the punishment becomes harsher because they confessed, you've unintentionally taught them that honesty isn't worth it. Instead, consider acknowledging the honesty while still addressing the behavior. Mistake number three is asking questions you already know the answer to. Rather than asking, "Did you eat those cookies when the crumbs are obvious?" Try saying, "I noticed the cookies are gone. Tell me what happened." This invites conversation instead of a verbal trap. Mistake number four is labeling the child. Avoid statements like,"You're a liar." Children often live up to or down to the labels that they hear. Instead, focus on the behavior."You told me something that wasn't true." Behavior can change. Identity labels can stick. Mistake number five is modeling dishonesty. You cannot expect your child to tell the truth if you lie on a regular basis. Children notice when adults tell lies, even if they are little white lies. If we tell someone, "Don't worry, I'm only five minutes away," when we're still at home, or ask a child to tell someone that we're not available when we're avoiding a call, our children learn that dishonesty is sometimes acceptable. Modeling honesty, even when it's inconvenient, helps reinforce the values we want our children to adopt. As I wrap up today, I want to remind you of one important message. Most children who lie are not trying to be manipulative. They are not trying to be defiant. They are not actively seeking to become dishonest adults. They are trying to solve a problem with the skills they currently have. Our job as parents isn't simply to catch the lies. Our job is helping children develop courage, accountability, emotional safety, problem solving, and trust. One practical strategy is to praise honesty whenever you see it, especially when it's difficult. You might tell your child,"Thank you for telling me the truth. I know that wasn't easy." That doesn't mean that there are no consequences for their actions. It means that honesty becomes part of the solution rather than something to fear. Over time, children learn that mistakes are manageable, relationships are resilient, and the truth is a safe place to start. Before we finish, I also want to encourage you to think about your family's overall communication. Regular conversations, family dinners, brief bedtime chats, and moments of connection build trust long before a difficult situation arises. Children who feel hurt and respected are often more willing to be truthful because they know the relationship can withstand uncomfortable conversations. Thank you so much for joining me today for another episode of Mom Doc Talk with Dr. Kristen Cook. If you found today's discussion helpful, please share it with another parent, caregiver, teacher, or grandparent. Your ratings, reviews, and subscriptions help more families find evidence-based parenting information and support this growing community. Until next time, remember, behavior is communication and honesty grows best in relationships built on trust, connection, and compassion. Take care, and I'm looking forward to seeing you in the next episode. Thanks for listening to Mom Doc Talk, where we explore the world of parenting with a little bit of science and a whole lot of heart. If this episode resonated with you, please consider sharing it with a friend. Don't forget to subscribe and review this episode as it helps me reach more parents like you. I'd love to connect on social media. You can find me at momdoctalk_kcmd.