Parents Can't Always Spot When Their Child Is Lying, Study Finds

Do you think you can?

Parents aren’t that great at spotting when their child is lying, a new study has found. 

A team at the University of California analysed the results of 45 experiments in deception in children up to 15.

Researchers discovered that, on average, adults were able to distinguish truth from lies just 54% of the time. 

A popular reason for adults getting it wrong was down to their child “looking guilty”, even if they weren’t. 

Adults view behaviours such as gaze aversion, fidgeting, nervousness, incoherent responses and facial expressions as being indicative of someone lying,” the researchers they wrote in the journal Law and Human Behaviour, according to the Daily Mail

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The deception experiments they analysed used a strategy called “temptation resistance”.

A child was left alone in a room with an exciting toy placed behind them. They were told not to turn around and look at it. 

They were left alone in the room. When the researchers returned, they asked whether the child looked at the toy.

Observers then left the room and watched the child. On returning, the child was asked if they had looked and adults guessed whether or not they were lying. 

Adults only got it right 54% of the time. Apparently us parents aren’t as super human as we thought. 

In a blog on The Huffington Post, Vanessa Van Edwards, who studies human lie-detection, said there are four main ways parents can tell their child is lying.

She cited verbal nuance, verbal clues, relief and fear as the ways you can detect deceit.

“The most important thing to remember about lie detection is that one clue alone does not guarantee lying,” she wrote.

“If you see some of the clues listed below, it is simply a red flag to get more information.”

Before You Go

10 Ways Toddlers Drive Us Mad
They're very fast. When they want to be.(01 of10)
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"Come on QUICKLY please! We're really late.”
Child goes into slow motion mode. Or worse, bends double, hangs arms to floor, and goes into robot-which-has-lost-power mode.
(credit:Elizabethsalleebauer via Getty Images)
They have a lot of questions. When they remember them.(02 of10)
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“Mummmy…?”
“Yes, darling?”
“…Mummmyyyy?
“Yes, darling what is it?”
“………Mummmmmmyyyy?”
“YES?! What do you want?!”
Child exits room.
(credit:Elizabethsalleebauer via Getty Images)
They have amazing attention spans.(03 of10)
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“Mummy, PLAY HIDE SEEK! Pleeeeease!”
“Okay, you count, I'll hide.”
Ten minutes later, emerge from behind kitchen door to find child has forgotten all about hide and seek and is looking at a book.
(credit:Jamie Grill via Getty Images)
They're good at finding things.(04 of10)
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“Please go and get your shoes.”
Child returns five minutes later. With a place mat.
(credit:oneblessedmama via Getty Images)
They're always careful with your things.(05 of10)
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“Mummy, this your glasses?”
“Yes you know you're not supposed to touch…”
SNAP! ?#@*&%!!!
(credit:Judith Wagner Fotografie via Getty Images)
They know exactly what they want.(06 of10)
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In the supermarket. “Mummmy? I need a weeeee.”
“But you had a wee before we came out.”
“Need a WEEEEEEEEE!”
Ten minutes later, shopping abandoned, supermarket traversed, cubicle awaited, trousers/pants removed, child balanced on toilet.
“So? Are you going to do a wee?”
“No.”
(credit:Westend61 via Getty Images)
They love eating broken biscuits.(07 of10)
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“Mummmy? Biscuit please?”
Hand over packet of biscuits with instruction to take just one. Child drops packet of biscuits twice.
“Not this one, iss broken. Not this one, iss broken. Not this one, iss broken. Not this one, iss broken…”
(credit:christie.nelson)
They have limitless energy.(08 of10)
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“Swings, mummy! Swings, mummy! SWINGS, MUMMY!”
Concede child needs fresh air and exercise. Dress child appropriately. Attach child's coat. Attach child's wellies. Ensure child has a wee. Pack essential snacks and juice. Put on own coat and shoes… discover child asleep on sofa.
(credit:Jill McAdoo Photography via Getty Images)
They never change their minds. Ever.(09 of10)
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“Mummy? Make scramble egg?”
Spend 15 minutes helping child break eggs and stir them VERY slowly until partially mixed. Wipe egg off all kitchen surfaces. Spend 15 minutes helping child stir eggs in warm pan until eggs are massively overcooked.
“Right, time to eat your scrambled egg!”
“Want CocoPops.”
(credit:Paz Ruiz Luque)
They show you their love all the time.(10 of10)
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Exit lounge to go to the loo. Return to find entire room covered in flour. Recognise hysteria bubbling up through torso at sight of completely white child/sofa/carpet…
“I luff you, mummy!”
Deeeeep breath.
"I love you, too.”
(credit:Liam Norris via Getty Images)