Human Lie Detector: The #1 Sign They’re Lying To You, Catch Liars Instantly! | Dr Leanne Ten Brinke

Are you dealing with a master manipulator? Learn how to identify the hidden red flags of liars, psychopaths and narcissists before they cause lasting damage. Dr. Leanne ten Brinke, a renowned psychologist and director of the Truth and Trust Lab at the University of British Columbia, breaks down the science of deception and toxic behavior. Drawing from her extensive peer-reviewed research and her eye-opening book, *Poisonous People*, she shares practical, evidence-based strategies to help you recognize dark personality traits and protect your mental well being. **In this episode, she explains:** ■ **The Warning Signs:** How to spot the early behavioral red flags of the "Dark Tetrad" (psychopathy, narcissism, Machiavellianism, and sadism) before you get hurt. ■ **The Manipulation Playbook:** The exact psychological tactics toxic individuals use to control and deceive others, including what gaslighting *actually* means. ■ **The Lie-Detector Myth:** Why relying on eye contact, fidgeting, and body language is actually a terrible way to catch a liar. ■ **The Two Faces of Narcissism:** How to identify the different types (including why one completely crumbles at the slightest criticism), and the devastating toll of working for a psychopathic boss. ■ **Defense Strategies:** Proven techniques to outsmart dangerous personalities, set ironclad boundaries, and dramatically improve your life. ### Chapters - **00:00:00** Intro - **00:02:21** Why This Research Into Psychopathy Matters - **00:02:58** Why Psychopathy Is Getting More Attention - **00:04:05** Can You Spot a Psychopath in 5 Seconds? - **00:05:30** How Facial Expressions Reveal What People Really Feel - **00:08:56** Can You Predict If Someone Is Guilty? - **00:09:59** Three Signs Someone Might Be Lying - **00:13:46** Can Anyone Learn to Spot a Liar? - **00:20:29** Why the Eye Contact Myth Gets Body Language Wrong - **00:21:53** Psychopathy, Narcissism, Machiavellianism and Sadism Explained - **00:34:49** The Biggest Myths About Psychopaths Debunked - **00:36:28** How Common Are Dark Personality Traits? - **00:38:05** Are Dark Traits Caused by Genetics or Childhood? - **00:41:13** How to Increase Your Chances of Becoming a Good Parent - **00:44:23** What Happens Inside a Psychopath's Brain? - **00:46:06** Can Dark Personality Traits Be Cured? - **00:49:30** Ads - **00:51:32** Why Being Lied to Makes You Feel Distant - **00:57:14** Can You Be Warm and Competent at the Same Time? - **00:59:57** Why Dark Personality Traits Don't Get You Ahead - **01:04:43** What a Real Job Applicant's Voice Note Revealed - **01:09:06** How to Spot Red Flags in Dating Profiles and Relationships - **01:17:08** Ads - **01:18:17** Why Setting Boundaries Matters More Than You Think - **01:19:36** 7 Rules for Dealing With Dark Personalities - **01:23:32** How to Spot Gaslighting and Coercive Control - **01:27:55** 7 Rules for Dealing With Dark Personalities Continued - **01:35:03** How to Communicate With Dark Personalities - **01:37:54** How to Become a Better Detective of People's Cues - **01:38:25** Why You Should Avoid Face to Face Negotiations - **01:42:18** Three Mistakes People Make With Dark Personalities - **01:44:02** How the 10% Do the Damage and the Biggest Lie About Success - **01:45:35** What Is the Greatest Lie We've All Been Told? **Independent Fact Check:** https://stevenbartlett.com/wp-content/uploads/2026/09/DOAC-Leanne-ten-Brinke-Independent-Research-Further-Reading-v1.pdf **Follow Leanne:** YouTube - https://link.thediaryofaceo.com/EkuzZ3K  Instagram - https://link.thediaryofaceo.com/2MRcXEs TikTok - https://link.thediaryofaceo.com/EL537g7 You can purchase Leanne’s book, ‘Poisonous People: Psychopathy, Narcissism, Manipulation, Sadism: How to Resist Them and Improve Your Life’, here: https://link.thediaryofaceo.com/3lYxLjb  Learn more from the online resources, here: Assess your own levels of (light and) dark traits - https://link.thediaryofaceo.com/1OsGuG0  Get support - https://link.thediaryofaceo.com/4F2i8Oj **The Diary Of A CEO:** ◼ Join DOAC circle here - https://doaccircle.com/ ◼ Buy The Diary Of A CEO book here - https://link.thediaryofaceo.com/BWjLTZK ◼ Shop The Diary Of A CEO collection: https://thediary.com/collections/shop ◼ Get email updates - https://bit.ly/diary-of-a-ceo-yt ◼ Follow Steven - https://g2ul0.app.link/gnGqL4IsKKb **Sponsors:** Fiverr - https://fiverr.com/diary and get 10% off your first order when you use code DIARY Wispr - Get 14 days of Wispr Flow for free at https://wisprflow.ai/steven