Sizing People Up: A Veteran FBI Agent's User Manual for Behavior Prediction book cover

Sizing People Up

A Veteran FBI Agent's User Manual for Behavior Prediction

Robin Dreeke
3.31(1092 Reviews)

Overview of Sizing People Up

Former FBI behavior expert Robin Dreeke reveals his six-step system for instantly reading trustworthiness. Used by intelligence professionals, this guide transforms how you evaluate colleagues, partners, and friends. Ever wonder why some people's words feel off? Dreeke's framework unveils what body language can't hide.

Key Themes in Sizing People Up

  • predicting human behavior
  • behavioral analysis
  • trust assessment
  • strategic relationship building
  • detecting reliability

Quotes from Sizing People Up

  • People almost always act in their own best interests.

  • The 'Army of One' typically loses to the 'Army of Two.'

  • Trust building becomes a strategic process rather than an emotional gamble.

Characters in Sizing People Up

  • Robin DreekeAuthor and former head of FBI Behavioral Analysis
  • LeoA Russian confidential source and FBI contact
  • ViktorLeo's grandson who received help from Dreeke

About the Author

About the Author of Sizing People Up

Robin Dreeke, bestselling author of Sizing People Up, is a retired FBI Special Agent and foremost expert in behavioral analysis, trust-building, and interpersonal communication strategies. A former Marine Corps officer and Chief of the FBI’s Counterintelligence Behavioral Analysis Program, Dreeke spent decades recruiting spies by mastering the psychology of human connection—expertise he now applies to leadership, sales, and organizational dynamics.

His work blends real-world experience from high-stakes intelligence operations with actionable frameworks like his signature “People Formula,” which helps professionals forge trust, resolve conflicts, and lead effectively.

Dreeke’s insights have been featured in major media, and he’s a sought-after keynote speaker for Fortune 500 companies and institutions worldwide. He expanded on these themes in It’s Not All About Me, another practical guide to ethical influence.

Recognized for translating spycraft into business success, Dreeke’s strategies are adopted by executives, military leaders, and law enforcement agencies to navigate complex human interactions. His methodologies, honed through thousands of FBI cases, continue to shape modern approaches to leadership and relationship management.

Download Summary of Sizing People Up

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"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

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117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw
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"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum
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108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC
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254
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17

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore
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"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

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