

This is a podcast aimed at better understanding other people and better understanding ourselves.
I’m Zachary Elwood. On this podcast, I talk to people from a wide range of professions and backgrounds about behavior and psychology.
Ready to jump in? Here are some popular episode compilations:
- Crime & investigation-related
- Politics-related
- Mental health-related
- Sports & games-related
- Behavior bullshit
Here are some of my my favorites.

This show will help you understand human behavior and psychology so you can better navigate your personal and professional life and better connect with people. The host Zachary Elwood, known for his Reading Poker Tells trilogy of books, talks with a wide range of guests who have unique real-world insights, including: law enforcement professionals, behavior and psychology researchers, sports analysts, visa officers, jury consultants, political researchers, mental health experts, and many more. What drives this show is the idea that truly understanding people requires patience, nuance, and a willingness to question simplistic ideas and assumptions. There are more than 200 episodes. To learn more details, see transcripts, and sign up for updates, go to www.behavior-podcast.com.
Polygraphs are a controversial tool in criminal investigations: critics argue they’re too unreliable to trust, while proponents say that, even if they’re not perfect, they nonetheless can play a valuable role in helping uncover the truth. I talk with veteran polygraph examiner David Goldberg (executiveprotectiongrp.com), who has conducted more than 20,000 examinations over a 30-year career and who believes that, in the hands of a highly skilled examiner, polygraphs are far more accurate than most people realize. We discuss why he thinks innocent people should see nothing to fear when taking a polygraph, how experienced examiners distinguish deception from nervousness, how hiring processes use polygraphs, and why he sees interviewer skill—not the technology—as the biggest factor in accuracy. David talks about the granular details of how a polygraph examination is conducted, and the strategies he uses. Along the way, we explore the broader question that underlies so many debates about the polygraph and other uses of behavior analysis: when can information that’s less than 100% reliable still be useful for making important decisions?
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Popular Episodes
- Reading behavior in The Traitors and other social deduction games, with Zack Davies
- Investigative tips from top OSINT expert Craig Silverman
- Cards Against Humanity co-creator David Pinsof’s theories on status-seeking, humor, and more
- From behavior bullshit to behavior research, with Vincent Denault
- Gary Noesner, FBI negotiator at Waco, on de-escalation and reading people
- The psychology of “Bad Vegan”: Sarma Melngailis on narcissistic manipulation methods, and the pain she lives with
- Reading and predicting jury behavior, with Christina Marinakis
- Relationship “tells”, with Brandi Fink
- Reading poker tells, with poker pro Dara O’Kearney
- Understanding and coping with anxiety, with editor of The Atlantic Scott Stossel
About me
I’m most known for my work on poker tells (aka, poker behavior). My first poker tells book, Reading Poker Tells, has been translated into seven languages. My independent research on deceptive online activity has been featured in NY Times, Washington Post, Buzzfeed, and more.
Like the show?
If you enjoy this podcast, please share it with others, and/or write me a review on Apple Podcasts. If you want to support my work, get a premium podcast subscription, or sign up for my depolarization-aimed Substack newsletter. Other ways to show appreciation: subscribe to this podcast on YouTube or Apple or Spotify (or wherever). You can also sign up below to get updates.