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

About this episode

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 01:04:41 How to Spot Red Flags in Dating Profiles and Relationships 01:12:44 Ads 01:13:52 Why Setting Boundaries Matters More Than You Think 01:17:05 7 Rules for Dealing With Dark Personalities 01:19:07 How to Spot Gaslighting and Coercive Control 01:23:29 7 Rules for Dealing With Dark Personalities Continued 01:30:37 How to Communicate With Dark Personalities 01:33:28 How to Become a Better Detective of People's Cues 01:34:00 Why You Should Avoid Face to Face Negotiations 01:37:53 Three Mistakes People Make With Dark Personalities 01:39:37 How the 10% Do the Damage and the Biggest Lie About Success 01:41:10 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_final.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