1. How and Why Tells Matter
Elwood explains that he carefully studies everything opponents do at the table: how they move, talk, look at their cards, handle chips, and react with weak versus strong hands. This skill didn’t come naturally; it came from years of focused observation.
He splits tells into two broad sources:
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“Lazy” or unaware behavior – Players don’t realize they’re being closely watched, so they openly telegraph intentions:
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Staring at their cards when weak
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Clearly preparing to fold, call, or bet
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Predictable timing (fast calls when weak, fast bets with strong hands, etc.)
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Emotion-driven behavior – Anxiety, excitement, and relaxation leak through:
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Looking down or away when bluffing
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Becoming rigid or very quiet after bluffing
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More relaxed eye contact and demeanor with strong hands
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For most people, learning to read these patterns is like learning a new language. You need to know where to look, when to look, and how to mentally store and connect gestures, expressions, and phrases to specific players and situations.
Tells are treated like any other piece of information: you weigh them by reliability. A tell you’ve only seen once gets little weight; a pattern you’ve seen many times from the same player can strongly influence decisions.
At the same time, Elwood warns against overvaluing tells. Solid strategy comes first, and in many sessions you will barely use tells at all. In softer games with many leaky players, tells can dramatically change your decisions. Used correctly, he believes tell-reading can add a noticeable percentage to a good player’s win rate—while having obvious tells yourself can significantly reduce it.
2. The Idea That “Everything Means Something”
Elwood introduces a theoretical belief: every action at the table carries some informational value. In an imaginary world where you knew everything about a player’s physiology and history, you could, in theory, pinpoint exactly what hand they held—even distinguish between very similar holdings.
In reality, this level of knowledge is impossible. Our senses and memory are limited. But the point of this thought experiment is to encourage players to treat behavior as meaningful and to absorb as much relevant information as they reasonably can.
3. The Science Behind Reading People
The chapter references psychologist Paul Ekman, known for research on facial expressions and deception, and work he did with Maureen O’Sullivan on so-called “truth wizards”—very rare individuals who are exceptionally good at spotting lies. Out of 20,000 people tested, only a tiny fraction consistently detected deception far above chance.
This supports two ideas:
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A few people are naturally gifted at reading others (Elwood suggests Stu Ungar was one of them).
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Even if you’re not one of these naturals, much of the skill can be studied and learned.
Ekman’s work also showed that core emotional facial expressions are universal across cultures—a reassuring fact for poker players: many basic emotional cues apply regardless of nationality or background.
4. Attitude and the Path to Excellence
To become strong at reading tells, you first have to believe it’s a real and improvable skill. Players who dismiss tells as unimportant close themselves off from learning.
Elwood criticizes the mindset of players who think they already “know enough,” which blocks them from absorbing new types of information. Many winning players underrate tells because they’ve done well without them, or they see them as a minor, “soft” edge. They also often neglect their own body language and speech, leaking information without realizing it.
A better mindset is to assume you’re still early in your education. Seeing the live game as full of exploitable behavioral data keeps you curious and motivated to improve.
5. Correlation: The Core Concept
The most important theoretical idea in this chapter is correlation: linking a specific behavior to a specific situation and type of hand.
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You watch how someone behaves when bluffing on the river, value-betting strong hands, checking with marginal holdings, etc.
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Over time, you notice repeated patterns: a behavior keeps showing up with a particular type of hand.
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The more often this link appears, the more confidence you can place in that tell.
Crucially, tells are tendencies, not guarantees. A player might usually show a particular signal when weak but occasionally do it with strong hands too. Just as you track preflop raise frequencies, you can mentally track how often a tell aligns with a certain hand strength.
Some tells will prove meaningless; others will be very strong indicators. Even a modestly reliable tell can tip borderline decisions (e.g., close river call/fold spots) in your favor. But if you can’t find a clear pattern, it’s better to move on rather than force meaning where there is none.
6. A Situational System for Classifying Tells
Elwood argues that earlier books often treated tells as unstructured lists. His system is built around when in the hand the behavior occurs. He emphasizes that no tell has a fixed meaning outside of context.
He divides tells into three main situational categories:
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Waiting-for-Action Tells
Behaviors shown while a player is waiting for someone else to act. These can indicate whether they want you to bet or prefer you check. -
During-Action Tells
Behaviors displayed while it is their turn: timing, posture changes as they bet, the way they move chips, tone of voice when declaring a bet, etc. -
Post-Bet Tells
Behaviors after they’ve already put money in: eye contact or avoidance, micro-expressions, posture changes, subtle smiles, and so on.
A key point: the same visible behavior can mean opposite things depending on category. For example, staring at you while waiting for your action might mean weakness, but staring at you after betting might often signal strength. Without recognizing the situational distinction, players can misinterpret identical-looking behavior and conclude that tells “don’t work.”
This framework helps transform a chaotic stream of actions into organized, interpretable information.
7. Strong vs. Weak: Hand-Strength Categories
Alongside the situational categories, tells are grouped into two broad outcome buckets:
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Strong-hand signals – the player is comfortable and generally wants a call.
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Weak-hand signals – the player is uncomfortable and usually prefers a fold.
This is a simplification, because players can have draws or vulnerable medium-strength hands, especially on the flop and turn. Tells don’t tell you the exact hand; they tell you how the player feels about their situation and what they likely want to happen.
Some key points about streets:
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Flop and turn:
Hand strength is often murky because of draws. Bet sizes are usually smaller, and emotional reactions are less extreme. Elwood tends to rely more on solid strategy here and use tells less. -
River:
No draws remain; a player usually knows whether they want action. Emotion-based tells are more reliable, especially on big bets. -
Preflop in no-limit:
Sometimes similar to river spots when large all-ins are involved. Players may show anxiety when jamming trash hands and relative calm with big pairs.
Ultimately, the “strong vs. weak” lens helps answer one key question:
Does this player want me in the pot or out of it?
8. Conscious vs. Unconscious Behavior
Elwood respectfully disagrees with Mike Caro’s heavy focus on “actors” versus “non-actors.” While it’s often true that exaggerated displays tend to be misleading, he argues that this split isn’t very helpful against most mid- and high-stakes players.
Many behaviors blur the line between deliberate deception and instinctive reaction:
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A beginner might deliberately stare off into space with a monster hand, trying to look uninterested.
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A solid regular might also avoid looking at the action with a strong hand, but in a much more subtle, automatic way driven by an unconscious desire not to appear threatening.
Because of this overlap, focusing too much on whether someone is “acting” can mislead you. Against more experienced players, the most valuable tells are usually subtle, emotion-based cues rather than theatrical moves.
9. Factors That Shape Tells
Elwood closes the chapter by listing key variables that affect how tells appear and how much weight they deserve:
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No-limit vs. limit
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No-limit: fewer tells overall, but big-pot situations generate strong, profitable emotional tells.
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Limit: smaller stakes mean less emotional intensity; tells often come from laziness or simple, crude attempts at trickiness. You rarely should fold good pot odds based solely on a read.
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Pot size
Larger pots create more stress, which increases the chance of meaningful emotional leaks. Small pots are usually not worth intensive study. -
Player skill level
Mediocre, experienced players are the best targets: they understand the game enough to have consistent patterns but often haven’t cleaned up their behavior. Strong players may have fewer tells and occasionally use fake ones. Total beginners are surprisingly hard to read because they don’t even know how strong their own hands are. -
Emotional state
Tilt, personal grudges, or mood swings can dramatically change a player’s patterns. Some become easier to read; others become chaotic and less predictable. -
Betting round
As discussed earlier, streets where hand strength is clearer (big river bets, large preflop all-ins) produce better tells. Streets with many draws (flop, turn) tend to be less reliable.
In Short
Chapter 2 builds the theoretical foundation for the rest of the book. Zachary Elwood argues that:
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Tells are real, learnable, and can add serious value to your game.
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They must be studied through correlation and context, not treated as magic signals.
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A structured framework—situational categories and strong/weak hand grouping—helps turn chaotic behavior into actionable insight.
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The best use of tells is as a supporting edge layered on top of strong fundamental strategy, not as a replacement for it.