Two Guys on Your Head

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March 12, 2015

How To Catch a Liar

By: Rebecca McInroy

There’s no such thing as a “tell”. For example, when people look up, fidget or stutter they might just be nervous, and not exactly lying. However, because we rely on the truth to make our culture go round, it might make our lives easier if we could just spot a liar out of the crowd.

As it turns out you can tell if people are telling the truth or not, but it takes some skill, time and knowledge.

In this edition of Two Guys on Your Head, Dr. Art Markman and Dr. Bob Duke talk about lying, and a new study that reveals a more accurate way to catch someone in a lie.


Episodes

February 20, 2026

New Research in Neuroticism

People high in the Big Five personality trait of neuroticism generally experience more negative feelings and fewer positive feelings each day. In this first episode of a three-part series on the psychology of neuroticism from Two Guys on Your Head, Dr. Art Markman, Dr. Bob Duke, and Rebecca McInroy discuss some new research that explores […]

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February 13, 2026

Compliments

We may think that giving someone a compliment just makes them feel good, yet as Dr. Art Markman, Dr. Bob Duke, and Rebecca McInroy discuss in this episode of Two Guys on Your Head, the benefits of complimenting others reach far beyond the expression of praise or admiration.

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February 6, 2026

Theory

 A theory serves as an analytical tool to explain “why” and “how” events occur, rather than just describing them. Yet, all too often, the way we use the idea of a theory obfuscates the real value of what a theory is: a structured, evidence-based explanation for natural or social phenomena, constructed using the scientific method […]

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January 30, 2026

Psychological Safety, Safety, and Trust

There is a difference between being safe and thinking you are safe, and the bridge between those two things is built on trust. In this episode of Two Guys on Your Head, Dr. Art Markman, Dr. Bob Duke, and Rebecca McInroy talk about the difference between psychological safety and the psychology of safety and how […]

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January 23, 2026

Compensation

Compensation is about more than just a paycheck. It’s about feeling valued, secure, and supported, but we don’t always think about it that way. In this episode of Two Guys on Your Head, Dr. Art Markman, Dr. Bob Duke, and Rebecca McInroy talk about the psychology of compensation.

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January 16, 2026

Desensitization

Why do things that once felt exciting, delicious, shocking, or even frightening start to feel… ordinary? In this episode of Two Guys on Your Head, Dr. Art Markman, Dr. Bob Duke, and Rebecca McInroy talk about the psychology of desensitization and how motivation, memory, and context shape what we see, feel, and react to, often […]

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January 9, 2026

The Psychology of Healthy Ambition

Working toward goals can give our lives direction and meaning. But psychology shows that when we focus too narrowly on outcomes, we can undermine both our well-being and our performance. In this episode of Two Guys on Your Head, Dr. Art Markman, Dr. Bob Duke, and Rebecca McInroy talk about the importance of staying mentally […]

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January 2, 2026

Early Specialization?

If your child shows exceptional talent early, it may be tempting to cultivate it immediately. However, an overload of lessons and practice may not be the most effective approach. This episode of Two Guys on Your Head, Dr. Art Markman, Dr. Bob Duke, and Rebecca McInroy talk about the perils of specializing early. Bloom, Benjamin […]

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