TED: Can you really tell if a kid is lying? | Kang Lee

The video explores the development of lying in children, debunking common myths about their ability to lie. Research shows that lying is a normal part of development, starting as early as age two. Key abilities for lying include theory of mind and self-control. Detecting lies is challenging, even for professionals. A new technology, transdermal optical imaging, can detect hidden emotions and lies by analyzing facial blood flow changes. This technology has potential applications in education, healthcare, and beyond.

What is one common belief about children and lying that the speaker challenges?

• Children are poor liars and easy to detect.

• Children only start lying in high school.

• Children never lie.

• Children are naturally good liars.

At what age do most children start lying according to the research presented?

• Four years old

• Two years old

• Five years old

• Three years old

Which cognitive ability is essential for a child to lie effectively?

• Theory of mind

• Mathematical skills

• Physical strength

• Artistic talent

Why are children's lies difficult for adults to detect?

• Adults are naturally bad at detecting lies.

• Children never show any emotions.

• Children always confess immediately.

• Children's facial expressions are neutral when lying.

What is the accuracy rate of the new lie detection technology?

• 60%

• 50%

• 75%

• 85%

What is the 'Pinocchio effect' as discovered by the researchers?

• A decrease in blood flow to the ears

• An increase in blood flow to the nose

• A change in skin color

• A rise in body temperature

What is one potential application of the new lie detection technology in education?

• To improve students' handwriting

• To detect students' anxiety levels

• To teach students new languages

• To monitor students' physical fitness

How can the new technology be used in healthcare?

• To perform surgeries

• To monitor patients' emotions and stress levels

• To prescribe medication

• To diagnose diseases

In what other field, besides education and healthcare, can the lie detection technology be applied?

• Sports

• Marketing research

• Construction

• Agriculture

What is a humorous application of the technology mentioned in the talk?

• Detecting if a date genuinely likes you

• Predicting the weather

• Cooking better meals

• Improving dance skills