8 Ways Parents Can Reduce Teenage Lying and Rebuild Trust

If your teen has ever lied to you, it can feel like a kick in the gut and a huge blow to trust, but don’t take it too personally. Years’ worth of research on lying behavior shows that teens lie more than any other age group, with nearly 75% reporting they lie, averaging three lies a day [1]. 

However, researchers also found that increased trust between teens and their parents or caregivers naturally reduces the tendency to lie. When teens feel safe to explore their identities and feel they can challenge the rules at home (respectfully and within limits), there is often less need for them to lie in the first place [2].  

Read on to explore the kinds of lies teens tell, why it’s so common, and ways to reduce lying in your teen. 

Understanding Types of Lying 

Research on 10,000 teens over the course of 20 years has helped identify three common kinds of lying [3]. These include:  

• Lying by Omission: Leaving out important key information or intentionally choosing not to share something that they know their parent or caregiver would consider important. Teens tend to do this quite a bit, although many don’t realize it’s a form of lying.   
  • You asked your teen about their night, and they said they went to a friend’s house, but don’t mention information such as substance use, sneaking out, or going to a party.  

• Lying by Avoidance: Teens try to distract their parents from conversations that make them share information they don’t want to. 
  • You asked your teen about their plans for the weekend, and they may answer in short, quick answers, “Going out with a friend”, then quickly change the subject to avoid telling you what’s really happening. 

• Lying by Commission: This is an outright lie and the most basic form of lying. But also the most uncommon among teens. It includes intentionally making statements or telling stories that are not true. 
  • You asked your teen where they were last night, and they told you a totally different location or story than the truth.

Why Do Teens Lie? 

Teens are known to push boundaries and try to establish independence. As they develop and form their own identity, they may disagree with certain home rules, find them unfair, and lie to get out of trouble or to get their way. 

According to a report on the ethics of American youth, which surveyed over 20,000 high school students on concepts such as lying, cheating, and stealing, below are some of the most common reasons teens report lying [4]: 

• To get out of trouble or avoid punishment 
• In order to get away with something or do something parents or adults typically would not approve of
• To maintain their privacy and establish independence
• Out of anxiety or fear (not all cases of teenage lying are ill-intentioned)
• To protect the feelings of others 
• To boost their self-esteem, feel good about themselves, and receive attention from others (teens tend to do this with their peers, such as by lying about accomplishments) 

Keep in mind that biologically, brain regions such as the prefrontal cortex are still developing. It controls emotional regulation and impulsivity,  with reduced inhibition, which increases the tendency to lie. As well, teens are less likely to think about how their lies could impact others or cause future consequences [5]. 

What Do They Lie About? 

Some of the most common things that teens lie about include [3]: 

• Vaping or smoking weed  
• Drinking alcohol
• Taking or sending nude photos, sexting  
• Having sex, or whether they have a boyfriend/girlfriend  
• Participating in bullying or cyberbullying
• Cheating in school  
• Who their friends are or where they are at 
• What they are spending their money on 
• The party or house they are going is supervised 
• If their homework is done 
• If they got into legal trouble (e.g, speeding ticket)  
• Accomplishments or over-exaggerating things (common among peer-to-peer lying)  

Signs Your Teen Is Lying 

According to research, there is actually no 100% way to recognize when a teen isn’t telling the truth. If you know your kid’s body language, facial expressions, and past behavior when lying, you may be able to detect them. 

But keep in mind that behaviors often associated with lying in the media (sweaty hands, lack of eye contact, red face) could be due to other factors, such as low confidence, anxiety, or a lack of assertiveness. One study on teenage deception found that a majority of the teenage participants drank alcohol, but only one-third of their parents were aware [6]. 

Research has shown that moms in particular can be good at recognizing deception; the study showed that mothers accurately detected 71% of the time when their teen was lying. However, the study also showed they tend to be too suspicious. 33% of the time when moms believed their teens were lying, they were actually telling the truth.

Dr. Nancy Darling, who conducted the study, states, “Overall, there was a large gap between mothers’ beliefs about whether their kids were behaving in a trustworthy way and adolescents’ self-reports of their trustworthy behavior.”[7]

8 Ways to Reduce Lying in Teens and Establish Trust 

• Understand Why Your Teen is Lying 

Are they lying to get out of something, avoid a punishment, or because something is important to them and they think you won’t approve?  Does your teen struggle with a mental health problem or trauma that causes them to have extreme distrust and compulsively lie? Is lying modeled in the home or among adults in their lives? 

• Foster a Radically Honest Home Environment  

Create a safe space where honesty is valued more than perfection. Encourage open, respectful conversations without judgment to build trust and openness.

• Active Listening and Open Communication 

Encourage nonjudgmental conversations around taboo topics without chiming in, interrupting, offering advice, or lecturing, which can help improve trust.   

• Explain To Them the Kinds of Lying That Exist  

Teach teens about different types of lies, avoidance, omission, and commission, so they can recognize their own behavior and understand its impact on relationships.

• Emphasize Accountability and Responsibility

Help your teen take ownership of their actions with compassion, focusing on learning and growth from mistakes rather than punishment.

• Positive Reinforcement for Honesty 

If your teen comes to you during a time of distress or crisis (they crashed the car, had sex and the condom broke, or smoked weed for the first time). Don’t respond with anger or punishment. Thank them for telling the truth, and focus on supporting them with active listening, kindness, problem-solving, and actionable next steps.   

• Set Boundaries 

Establish clear, consistent rules and consequences while maintaining warmth and acceptance. Balanced boundaries help teens understand expectations while feeling secure enough to be truthful.

• Incorporate Faith if Relevant 

If your family holds a strong belief system that condemns lying, consider revisiting the importance of honesty with your teen, emphasizing love, grace, and personal growth rather than fear and punishment. 

Teach them how honesty reflects the character of integrity and trust that God desires in us as Proverbs 12:22 says, “The Lord detests lying lips, but he delights in people who are trustworthy.”

Is Compulsive Lying in Teens a Mental Health Red Flag? 

If your teen is frequently lying without a clear benefit and it is interrupting their daily lives (e.g, getting them in trouble at school), they may be struggling with an underlying mental health problem, emotional issue, or covering up risky or dangerous behaviors such as substance use, unsafe sex, or self-harm. 

Teens with bipolar disorder, ADHD, and oppositional defiant disorder are at an increased risk of lying due to behavioral issues and emotional dysregulation. Other serious reasons teens may lie compulsively include low self-esteem and fear of rejection, inability to control their impulses, or a need for validation [8]. 

If your teen is elaborately lying or being manipulative and it is impacting relationships, academics, or causing other emotional problems, consider connecting with professional mental health treatment.  

Building Trust and Communication Skills in Teens at Clearfork Academy, TX

Clearfork Academy is a network of behavioral health facilities in Texas committed to helping teens recover from substance abuse disorders and co-occurring mental health challenges.

If your teen struggles with compulsive lying or manipulation that is impacting their functioning, mental well-being, or the well-being of others, they may struggle with an underlying behavioral issue that requires treatment.   

Our family support services include therapy, skill-building workshops, and educational events to help parents and caregivers strengthen their relationships with youth to rebuild trust and honest communication. Contact our team at Clearfork Academy today.

Sources

[1] Debbie, E. et al. 2016. From junior to senior Pinocchio: A cross-sectional lifespan investigation of deception. Acta Psychologica. 

[3] Cumsille, P. et al. (2009). Individual and Issue-Specific Differences in Parental Knowledge and Adolescent Disclosure in Chile, the Philippines, and the United States. Journal of Research on Adolescence, 19(4), 715-740.

[4] Josephson Institute, Center for Youth Ethics. 2008. The Ethics of American Youth. 

[5] Giannantonio, M. et al. (2020). Emotional Dysregulation in Adolescents: Implications for the Development of Severe Psychiatric Disorders, Substance Abuse, and Suicidal Ideation and Behaviors. Brain sciences, 10(9), 591.

[6] Lushin, K. et al. 2017. Parental monitoring, adolescent dishonesty and underage drinking: A nationally representative study. Journal of Adolescence. 

[7] Darling, N., et al. (2010). Trust, but verify: Knowledge, disclosure, and mothers’ beliefs about adolescents’ trustworthiness. Interpersonal trust during childhood and adolescence (pp. 203–222). Cambridge University Press. 

[8] Chamberlain, R. et al. (2019). The Phenomenology of Lying in Young Adults and Relationships with Personality and Cognition. The Psychiatric Quarterly, 90(2), 361–369.