How can I stop my 12-year-old from constantly lying?

Since lying is a learned behavior, it’s possible to unlearn it as well.

  • By Armin Brott Tribune News Service
  • Monday, September 30, 2019 1:30am
  • Life

By Armin Brott / Tribune News Service

Q: My 12-year-old daughter is a liar. I wish it weren’t true, but just about everything that comes out of her mouth is a lie. If she tells me she’s texting a girl from school, it’s probably a boy. If I ask whether she’s cleaned her room, she’ll look me straight in the eye and tell me, “Yes,” even though I know (and she knows I know) that she didn’t lift a finger. If I were to ask her if the sky is blue, she’d probably tell me it isn’t. Why is she doing this and how can we get her to stop?

A: Telling lies is a part of human nature, and it starts very early in life. A study on lying done at Toronto University in Canada found that about one in five 2-year-olds lie, but by age 4, nine in 10 were doing it. And the lying doesn’t stop when we grow up. Researchers at the University of Massachusetts found that 60% of adults can’t make it through a simple 10-minute conversation without telling at least one lie (in fact, people in the study told an average of three lies in that 10-minute period).

Lying is a learned behavior. When we’re very young, we look at the adults in our lives as all-powerful and all-knowing. Trying out a lie —and getting away with it —shows us that people can’t read our minds. As we get older, we discover that lying can sometimes get us out of trouble and may even help us avoid getting punished. The more successful the lies, the more often we’ll tell them.

I know I’m painting a pretty gloomy picture of humanity, but the silver lining here is that since lying is a learned behavior, it’s possible to unlearn it as well. You may never be able to get your daughter to stop it completely, but you can at least get her to cut back. It’s a three-step process.

First, try to find out why she’s lying. Is it to cover up a previous lie? To avoid taking responsibility for something? To attract attention and get you to spend more time with her? Once you know what’s behind the lies, you’ll have a better chance of being able to deal with them —and she won’t feel the need to lie as often.

Second, come up with some consequences that will kick in when your daughter lies to you. Talk with your spouse and agree on a single, consistent response to lying that you’ll both support. If possible, ask your daughter to come up with what she thinks is an appropriate consequence; kids often come up with harsher punishments than their parents do. Then you’ve got to stick to your guns. Once your daughter knows that getting caught in a lie will result in X happening this time, next time, and every time thereafter, she’ll think twice before telling you whatever lie pops into her head —particularly if X is something she really doesn’t like.

Third, incentivize her for telling the truth —even if it’s a really small thing. If you ask her whether she’s finished her homework and she actually has, let her know you noticed and give her a reward (it doesn’t have to be a big deal —letting her stay up 20 minutes past her bedtime is enough).

Talk to us

> Give us your news tips.

> Send us a letter to the editor.

> More Herald contact information.

More in Life

Bert Kreischer, Queensryche, glass art and more

Music and arts coming to Snohomish County

Everett park gets a new (old) way to tell time

A former professor built and donated a sundial for Lions Park in south Everett.

Give me some more shade, please…

If you recall, I mentioned a number of larger growing maples last… Continue reading

The 2026 Cadillac Vistiq Premium Luxury model in Opulent Blue.
2026 Vistiq moves the Cadillac brand closer to its goal

The three-row luxury SUV is a new addition to the company’s growing lineup of electric vehicles.

Artwork is found throughout La Conner, including along its channel boardwalk. (Jon Bauer / The Herald)
Fall for La Conner: fewer crowds, full charm

A local shares why autumn is the best-kept secret in this artsy waterfront town.

People get a tour of a new side channel built in Osprey Park on Thursday, Sept. 18, 2025 in Sultan, Washington. (Olivia Vanni / The Herald)
Snohomish PUD cuts ribbon on new Sultan River side channel

The channel created 1,900 linear feet of stream habitat, aimed to provide juvenile salmon with habitat to rest and grow.

Willy the worm sits between pink and Kramer’s Rote heather. (Sunnyside Nursery)
Are you going Scottish or Irish?

As you read the title above, I am curious what comes to… Continue reading

A truck passes by the shoe tree along Machias Road on Thursday, Aug. 28, 2025 in Snohomish, Washington. (Olivia Vanni / The Herald)
Murder on Machias Road? Not quite.

The Shoe Tree may look rough, but this oddball icon still has plenty of sole.

The 140 seat Merc Playhouse, once home of the Twisp Mercantile, hosts theater, music, lectures and other productions throughout the year in Twisp. (Sue Misao)
Twisp with a twist: Road-tripping to the Methow Valley

Welcome to Twisp, the mountain town that puts “fun, funky and friendly” on the map.

Adopt A Stream will host bat and bird events on Saturday

Get an introduction to birding or learn about the benefits of bats at the Northwest Stream Center.

Photo provided by Cadillac Newsroom
Cadillac Introduces First-Ever V-Series All-Electric: LYRIQ Performance

0-To-60 in 3.3 Seconds, The Fastest Cadillac Ever

Ashley Tawes and Sydney McNeil shovel compost to be sifted into wheelbarrows during class at South Whidbey Elementary School on Sept. 22, 2025 in Langley, Washington. (Olivia Vanni / The Herald)
Curriculum that students can really dig

South Whidbey schools offer hands-on lessons in picking, cooking, baking and tasting real food from its own farm.

Support local journalism

If you value local news, make a gift now to support the trusted journalism you get in The Daily Herald. Donations processed in this system are not tax deductible.