The Bicycle Guide to Caros Book of Poker Tells The Psychology and Body Language of Poker

1. 1Separate genuine from acted behavior first. Genuine behavior is brief and instinctive: a player peeks only long enough to learn what he needs, then looks away and guards his hand. Acted behavior is sustained or staged: he keeps staring after a bet under threat of a call, or he stares at his hole cards as you reach for chips.
2. 2Ask what the behavior is trying to make you believe, then invert it. Acting weak (looking away, seeming distracted, appearing uninterested) means strong. Acting strong (continued staring, studying the hand, exaggerated bets, intimidating gruffness, an 'accidental' exposed strong card) means weak or bluffing.
3. 3Check the timing against the action. Look-back-at-hand as you reach for chips is Caro's Law #18: he is probably bluffing. A stare that continues after a bet and a threatened call signals a weak hand or bluff, because the act is meant to suggest he is studying a powerhouse.
4. 4Read the exposure. A player who deliberately shows a strong card or cards is actually weak. Ask what story the exposed card sells. In the draw-poker example, a 'carelessly' exposed ten while drawing two cards is meant to suggest three tens. Rare exceptions exist, where a weak card is shown while holding a powerhouse.
5. 5Check the player's baseline. If he is just being himself, moving freely and not restraining, he is unlikely to be bluffing or worried. A gruff 'Just play the game' from a normally friendly player usually means pass. A friendly bettor, a forced smile, or an unconvincing 'Yes' to 'are you bluffing?' signals a bluff (Laws #6 and #7).
6. 6Act on the inverted read, and plan the sequence. When a player acts uninterested and you suspect a trap, check and let him bet rather than betting into him. When he acts strong and you suspect weakness, call, and with no contrary indication call any bettor whose hand covers his mouth (Law #5).
7. 7Weigh the call against the unpredictability. Most opponent decisions are made by whim (Caro's Law of Loose Wiring), so treat the tell as a strong lean, not a certainty. Check the reliability by player type: the exposed-card tell is 92% for weak players, 83% for average, and 71% for strong.

Hold 'em, $25/$50 blinds. You are in seat 5 with the big blind and see the flop against Sam, who called your raise by whim. The board runs K♠ 8♥ T♠, then 8♠, then 9♠ on the river. Glancing from the corner of your eye, you see Sam suddenly look up and away, seeming distracted as he waits for you to act. That is acted weakness: someone waiting to pounce who does not want to discourage your bet. You reason he could hold a pair of nines (full house) or the ace of spades (nut flush), and that a queen-jack straight would make him feel vulnerable with four spades showing. You check, and Sam bets. Beatrice calls with ace-king, and seat 3 calls with queen-jack for a straight. You raise. Sam shows nines and wins the pot, which is $3,425 with the river action. The tell was read correctly: he did hold a full house.

• If a player acts uninterested or distracted when a bet is possible and he is active in the pot, then treat him as strong: pass unless you hold a powerhouse, check rather than bet, and do not bluff.
• If a player bets and then stares at his hole cards or looks back as you reach for chips, then he is probably bluffing; call with marginal hands and even weak hands.
• If a player holds a hand to his mouth and nothing contradicts it, then call (Law #5).
• If a player deliberately exposes a strong card or cards, then assume weakness and play against the story the card is telling.
• If a normally friendly player turns gruff or says 'Just play the game' after betting, then pass. If a bettor is unusually friendly or smiles in a forced way, then call or raise, because he is acting nice so you won't call.

• Treating a quick instinctive peek as acting. The tell: he looks only briefly, then looks away and guards his hand. That is the genuine double-check, which gives information about what he lacks (e.g. no flush after the third suited card).
• Reading every uninterested look as strength regardless of context. The tell: you fold or check a hand you should bet, when the player was in fact simply disengaged and not an active participant in the pot.
• Ignoring baseline behavior. The tell: you call a gruff remark as if it were a bluff, when an unfriendly remark that is out of character for a friendly player usually means a real hand.
• Treating the tell as certainty. The tell: you commit your whole stack on a 60-90% read, forgetting that opponents decide by whim and that reliability drops against strong players.
• Missing the reverse exposure. The tell: you assume every shown card means weakness, when a rare exposed weak card can accompany a powerhouse.

• ▸Opponent / type (weak, average, strong): note who and how skilled, since reliability differs by type.
• ▸Baseline behavior: how he normally acts (friendly, gruff, still, chatty).
• ▸Observed behavior: what exactly he did (looked away, kept staring, exposed a card, reached for the pot, remarked).
• ▸Timing: before or after the bet, and whether it came as you reached for chips.
• ▸Genuine or acted?: brief and guarded versus sustained or staged.
• ▸Story it sells: what he wants you to believe (strong, weak, three tens).
• ▸Inverted read: the likely true strength (weak, strong, bluff, trap).
• ▸Planned action: check, call, raise or pass, per the decision rules.
• ▸Result at showdown: confirm or refute to refine the read for this opponent.

1. 1Start with motive, not mannerism. For any behavior, ask what the player wants you to do and whether the action serves that goal. A tell you have never seen can still be read if you can name the motive behind it.
2. 2Run the two-condition acting test before you act on anything. The player is probably acting only if (1) he believes you are watching or listening and (2) your decision matters to him. If either condition fails, treat the behavior as unaware and read it straight.
3. 3If the test says he is acting, apply the Great Law: decide what he wants you to do and disappoint him. Weak-acting means strong, strong-acting means weak. A bettor who reaches for chips before you have folded wants you to surrender, so treat it as a sign of weakness.
4. 4Watch the right moments, not every moment. Tells cluster at decision points: the instant a draw card is received, the moment before the opening decision, the reach for chips out of turn. Fix your attention on those windows and ignore the rest.
5. 5Reason from the situation to the player's suspense level. In the draw-poker example, the opener takes three cards, so two pair is probably the best hand. A player holding two pair feels low suspense and looks at his card at once. A player on a straight or flush draw is the underdog, feels high suspense, and often waits. Ask what the hand he could hold would make him feel.
6. 6Convert the read into a probability before acting. Reliability is only a rough guess, and a tell is rarely 100%. Compare it to the pot odds: if you judge a 40% chance of a bluff, a call can still be correct. A tell is a clue to combine with other factors.
7. 7Log exceptions by player. Some players do not use weak-means-strong or strong-means-weak. Note who they are so you do not apply the tell to them. Also discount strong players, who give fewer tells and sometimes reverse the obvious ones.
8. 8Check the sample for each opponent. For the instant-look tell, it is overwhelming among players who sometimes look at once and sometimes wait. Learn which kind of player you have before trusting it.

Draw poker. The opener, second from left, announces he needs three cards. The man in the hat then draws one card and looks at it at once, before the opener has bet or checked. Motive analysis: against a three-card draw, two pair is the probable winner, so a hatted man with two pair knows he has the better hand and feels little suspense. A man drawing to a straight or flush is the underdog, and many such players enjoy not looking until they must. The instant look therefore points to two pair, or even three of a kind with a kicker, rather than a draw. The source rates this tell at 62% reliability for weak players, 58% for average players and 55% for strong players, and it says the tell is not nearly 100%. Worth: $0.54, $2.40 and $11.70 per hour at $1, $10 and $100 limits. The opener's action: if he makes aces-up or queens-up, he bets, because a smaller two pair will call and would not bet if he checked. The read is strongest against a player who sometimes looks at once and sometimes waits.

• If the opponent knows you are watching AND your decision matters to him, then assume he is acting and do the opposite of what he wants.
• If either condition is missing, then read the behavior as unaware and do not reverse it.
• If a draw player looks at his card at once while the board favors two pair, then lean toward two pair or better. If he delays looking, lean toward a draw needing help.
• If a tell would lead you to fold, then discount its value, because you might have folded anyway and the tell is not 100%. If it lets you make a courageous call, then it can win a whole pot, so weigh it more heavily.
• If the opponent is a known exception to weak-means-strong, or a strong player who may reverse tells, then do not apply the tell until you have confirmed it for him.

• Reading mannerisms without motive. You memorize behaviors instead of asking what the player wants, so a new tell leaves you blind. The sign is that you have no explanation for why he acts that way.
• Treating a 55-62% tell as certain. You fold or call on one clue and ignore pot odds and other factors. The sign is that you have no estimate of how likely the read is to be correct.
• Assuming acting when the player is merely unaware. You reverse a behavior he does not know you can see, or one that does not matter to him. The sign is that you never checked the two conditions.
• Applying tells to the wrong player. You use weak-means-strong on the minority who do not play that way, or on strong players who reverse tells. The sign is that you keep no list of exceptions.
• Overestimating the dollar value. You assume you catch every instance, though nobody notices everything at the table, and ignore the overlap with related tells. The sign is that your expected gain is the maximum figure rather than a fraction of it.

• ▸Opponent / player type (weak, average, strong): Record who and their level, since reliability falls as skill rises.
• ▸Moment observed: Name the decision point (e.g., instant look at a draw card, reach for chips out of turn).
• ▸Watching condition: Does he believe I am watching or listening? Yes/No.
• ▸Mattering condition: Does my decision matter to him? Yes/No.
• ▸Acting verdict: Acting only if both are Yes; otherwise unaware.
• ▸Motive hypothesis: State in one line what he wants me to do or how suspense is affecting him.
• ▸Hand inferred: Write the specific hand range the motive implies (e.g., two pair or better vs. straight/flush draw).
• ▸Reliability estimate and pot odds: Write your percent confidence and compare it to the price of the call.
• ▸Exception check and result: Is he a known exception? Record my action and the outcome for future calibration.

1. 1Price the decision before you look for a tell. Write down the pot, the cost to call, and the break-even win rate. The source's case: a $400 pot, $100 to call, and you beat only a bluff. You break even at 20% (lose $100 four times, win $400 once). Any read above that threshold justifies the call.
2. 2Convert the tell into a probability, not a yes/no. A tell does not need to be 50% accurate to pay. Ask what chance the tell gives the opponent of holding the hand you beat or the hand that beats you, then compare that number to the break-even rate.
3. 3Adjust the tell's reliability for the opponent. The source gives the same tell different reliability by player type, for example the leaning-back tell: weak 88%, average 78%, strong 68%. Discount the read for strong players and trust it more for weak ones.
4. 4Watch at the moments when tells appear. The double-check tell happens as the flop is spread: you can look at the board later, but not at the opponent's reaction. Look at the opponent while the flop is dealt, not at the cards.
5. 5Turn the read into a specific action. For a patient, leaning-back opponent who acts after you, open or steal with slightly weaker hands you would normally pass, because he is no threat for now. If you are the one deciding to enter his pot, the source's advice is to seldom get involved with the man who sits patiently and plays only quality hands.
6. 6Use negative information to bet, not just to fold. If an opponent double-checks a suited flop, he almost surely has no flush. Bet top pair with a good kicker (king-jack) that you would otherwise check, and call his all-in more readily with king-queen in no limit.
7. 7Combine tells with other factors, and don't stack their values. Some tells are nearly 100% accurate, others are only clues to weigh with the rest of the hand. The Value Per Hour figures overlap and cannot be added, so make one decision from the whole picture.
8. 8Expect borderline, whim-driven opponents (Caro's Law of Loose Wiring). Most hands are played at whim, so don't commit to a fixed prediction of what they will do. Treat the read as one input to a pot-odds call.

The pot is $400 and it costs $100 to call. You beat only a bluff. Break-even is 20%: across five identical calls you lose $100 four times and win $400 once, which nets zero. Now an opponent's behavior after betting, such as forced, hazy talk where a player with a strong hand would speak freely and rationally, leads you to estimate a 40% chance of a bluff. The expectation of a call is 0.40 × $400 − 0.60 × $100 = +$100 per call. Over five calls you win twice ($800) and lose three times ($300), a net of +$500. Call. Do not wait for a tell that says 'bluff' with certainty. A 40% read already clears the 20% bar by double. If the tell were only a 15% read, the same call loses money, so you fold.

• If your hand beats only a bluff, then call whenever your estimated bluff chance exceeds cost ÷ (pot + cost paid on losses) as in the source: $100 into a $400 pot needs only 20%.
• If the tell fits a patient, leaning-back player and you act before him, then open with slightly weaker hands than usual, since he is no threat and you are stealing the antes.
• If an opponent double-checks his hand after a suited flop, then he almost surely has no flush; bet top pair with a good kicker, and call his all-in more readily.
• If the tell's reliability is listed by player strength, then lower your confidence against strong players (68% vs. 88% for weak) before choosing to call, raise or bluff.
• If you cannot tell what the opponent will do, then assume borderline decisions are made at whim and rely on pot odds plus read rather than on predicting the exact action.

• Waiting for near-certainty before calling. You fold at 40% reads that clear a 20% break-even; the tell is that you only call when you 'know' the opponent is bluffing.
• Applying the right tell wrongly. The source warns tells have questionable value even to those who spot and read them but apply them incorrectly; the tell is a correct read followed by the wrong fold, call or bet.
• Adding up tell values. Overlapping tells do not add, and many do not appear; the tell is expecting each hour to pay the sum of the listed Value Per Hour figures.
• Treating one player type as another. Using the weak-player reliability (88%) against a strong player (68%) overstates the read; the tell is being bluffed by a good opponent who acts the part.
• Assuming opponents repeat their play. Under Caro's Law of Loose Wiring the same players with the same cards produced a $4,000 pot and a sub-$1,000 pot with different winners; the tell is certainty about what an opponent 'always' does.

• ▸Pot size: the current total pot in dollars.
• ▸Cost to call: the amount you must put in.
• ▸Break-even win rate: cost ÷ (pot + cost) or the source's loss/win count; write the percentage.
• ▸Hand you beat: bluffs only, or which holdings do you beat.
• ▸Tell observed: the specific mannerism and when it happened (e.g., on the flop spread).
• ▸Opponent type: weak, average or strong, and the reliability for this tell at that level.
• ▸Estimated probability from the tell: your percentage after discounting for opponent type.
• ▸Competing or overlapping tells: list other clues so you do not double-count.
• ▸Action chosen and EV check: fold, call, bet, bluff or raise; compare probability to break-even.

1. 1Treat profit as the output of a chain: read, then interpretation, then bet. Caro claims a conscientious winner can at least triple profits by mastering tells, and says most profit comes from reading players who are trying to deceive you. Audit all three links, because a break anywhere kills the dollars.
2. 2Start from motive, not from a catalog. Most tells exist because players conceal hand strength by acting out the opposite: weak hands act strong, strong hands act weak. Sort each observed mannerism into a universal category (acting vs. unaware) and ask what the player wants you to do.
3. 3Apply Caro's Great Law: decide whether the player is acting or not. If acting, decide what they want you to do and disappoint them. Keep a cool, disinterested attitude and be as eager to find a reason to pass as to call.
4. 4Use the format's Reliability and Value Per Hour figures to rank which tells to hunt first. Compare estimates across tells for relative importance rather than trusting the exact dollar amount. The values assume the tell exists among many opponents, you catch it consistently, and you apply it correctly.
5. 5Adjust reliability by opponent type. For the 'I thought you already passed' tell (#36), reliability runs weak players 85%, average 81%, strong 54%. Use the full read against weak and average players, and discount it against strong players who reach early as a ploy to induce a call.
6. 6Convert the read into a specific bet change. For tell #36: if you were about to throw your hand away, consider calling, even with a fairly weak hand. If your hand cannot beat anything, raise as a bluff to take a pot that would have got away.
7. 7Remember that opponents decide many borderline hands by whim (Caro's Law of Loose Wiring). Do not assume you can predict them from strategy alone. Watch and listen to what they are doing, and note that your own behavior can sway their borderline decisions.
8. 8Record results per tell and per opponent type. Caro warns that tells have questionable value even when spotted and read correctly if you apply them incorrectly, so track application errors separately from read errors.

Take Tell #36 from the passages. In a draw poker game, a woman bets, and while her opponent is still in the act of passing, she reaches for the pot. Her motive is to show strength by implying the outcome is a sure thing, which fits the Strong Means Weak category. Reliability is 85% against weak players, 81% against average players, and 54% against strong players. Value per hour is $0.90 at $1 limit, $8.10 at $10 limit, and $7.50 at $100 limit. The $100 figure is lower because strong players sometimes reach early as a ploy to induce a call. Caro's reasoning is that a player who truly holds a winner gives you every opportunity to call, so reaching while you are passing is an attempt to drive out your last doubts. If you were about to fold, you consider calling, even with a fairly weak hand. If your hand is hopeless, you raise as a bluff to take a pot that would have got away. The profit comes from the changed decision, not from noticing the reach.

• If a player reaches for the pot while you are in the act of passing, then call even a fairly weak hand, because a bettor with a real winner wants you to call.
• If you reach the same moment with a hand that cannot beat anything, then raise as a bluff to take a pot that would have got away.
• If the reaching happens ostentatiously while you are only starting to consider, and the player is strong, then treat it as a possible ploy to induce a call and do not rely on it.
• If a player behind you stares at their cards and reaches for chips out of turn, then act as if they are not there, play fewer opponents, and profit with hands you would not otherwise have played.
• If a player is acting, then work out what they want you to do and do the opposite, staying equally willing to pass or call.

• Applying a correct read incorrectly. Caro says tells have questionable value for those who spot and read them but misapply them. The sign is that you notice tells accurately yet your results do not move.
• Trusting the dollar figures literally. Caro says to compare estimates across tells instead of relying on exact amounts, and the values are rough guesses. The sign is that you plan bankroll or stakes decisions around a single tell's $/hour number.
• Ignoring opponent skill. The same tell drops from 85% to 54% reliability against strong players. The sign is that you fold or bluff against strong players on a tell that works on weak ones.
• Memorizing a list of mannerisms instead of reading motives. The list is endless and incomplete, so you are lost when you meet a tell you have not catalogued. The sign is that you freeze when an unfamiliar behavior appears.
• Assuming opponents behave predictably from strategy alone. Under Loose Wiring, borderline decisions are made by whim. The sign is that you decide from what the opponent should do rather than what they are doing.

• ▸Opponent type (weak / average / strong): classify before relying on the read.
• ▸Tell observed: describe the mannerism in one line.
• ▸Category and motive: acting (weak means strong, strong means weak) or unaware; state what the player wants you to do.
• ▸Listed reliability for this opponent type: copy the percentage from the tell's reliability figures.
• ▸Planned action: the specific call, fold, or raise that disappoints the actor.
• ▸Action actually taken: record whether you followed the plan.
• ▸Result in dollars: the amount won or lost on the hand.
• ▸Application check: did the outcome come from a read error or an application error?
• ▸Limit played: note it, since value per hour differs by limit.

1. 1Adopt the baseline demeanor before you look at anyone. The source's instruction is 'keep a cool, disinterested attitude.' Pick one neutral posture and face, and use it on every hand, whether you hold the nuts or nothing. Concealment starts with having nothing of your own to read.
2. 2Be as eager to find a reason to pass as a reason to call. The passages say so directly. If you only watch for tells that justify calling, your folds and calls become a pattern in themselves. Look for both kinds.
3. 3Read tells during other people's actions and at the moments they are not looking at you. 'Concentrate and let the tells talk' means you watch and say nothing. Noncombat tells (chip stacking, how a wallet is handled, slumped posture) show up when no pot is at stake, so you can collect them without any visible interest.
4. 4Log each observation in motive terms, not as a memorized gesture. Write the action, the motive (for example, 'tries to look dangerous by showing interest in the flop'), and the category (Strong Means Weak, Noncombat). A motive-based log lets you read new mannerisms later without comparing them to a list.
5. 5Respond to quiet tells with small shifts in frequency. The source's own advice is 'call him less, bluff him more,' 'call more often, bluff less often,' or 'don't get involved with medium-strength hands.' These changes are hard for an opponent to connect to anything he did, so he keeps leaking.
6. 6Save the big, visible plays for the tells worth them. Catching a player acting strong when weak often earns a courageous call that wins a whole pot. Catching weak-acting-strong usually saves only a fraction of a bet. Make the costly or conspicuous move only where the payoff is large.
7. 7Check each tell against the price of the decision. A tell does not need 50% accuracy. With a $400 pot and a $100 call, you break even if you catch the bluff 1 time in 5 (20%). Then weigh the tell's reliability for that player type (weak, average, strong) against what you know about him, such as 'he never bluffs.'
8. 8Decide, then act without commentary. When a read tells you to disappoint an actor, fold or call at your normal tempo, with no sigh, smile, or pause. The player leaves the hand believing his act is still working, and he will repeat it.

The setup is built from the source's numbers; the passages give no full hand like this. An average player's eyes stay fixed on the flop after he bets. That is Tell #32, 'If these cards change, I'll be a witness' (Strong Means Weak). He is pretending to be interested so that you will pass, and the source rates it 65% reliable for average players. The pot is $400 and it costs you $100 to call. You beat only a bluff, so you need to catch a bluff 20% of the time. A 65% read clears that easily, and Caro's Law #12 says to disappoint a player who acts strong hoping you will pass. You call at your usual tempo, with the same cool, disinterested face you show on every hand. He sees nothing that tells him you noticed the stare. He keeps staring at flops he dislikes, so the leak continues. Compare Tell #1: if his chips are neatly stacked with extra chips on top, that is probably his profit. A bet slightly larger than that profit then makes a good bluff, because players are reluctant to call when a failed call would erase a win. You apply this as a shift in bluff frequency, with no visible reaction.

• If a tell reads 'acting strong' and its reliability for this player type exceeds the break-even percentage (call ÷ (pot + call), such as $100 ÷ $500 = 20%), then call without visible reaction. Weigh it against everything else you know, such as 'he never bluffs.'
• If a tell reads 'acting weak' and you would have folded or saved a call, then act on it quietly, but expect only a fraction of the bet in value. Do not build a plan around it.
• If the signal is a noncombat tell (neat or messy chips, a guarded wallet), then change call and bluff frequency in small steps and avoid dramatic plays. For a neat player, bluff more and call his bets less. For a messy player, call more and bluff less.
• If the opponent is a weak player, then trust the tell more (Tell #1 reliability is 88% for weak players, 59% for strong). If he is strong, discount it and be more careful about what you reveal.
• If you notice yourself reacting (leaning in, hesitating, smiling) after a read, then return to your fixed baseline posture before the next action. A visible change tells the opponent that he leaked.

• You show the read. You pause, grin, or sit up straighter after spotting a tell, and the opponent stops giving it. The tell is that a pattern which worked for several orbits suddenly stops. This failure is inferred from the 'cool, disinterested attitude' advice; the passages do not describe it directly.
• You hunt only for reasons to call. Your folds become predictable because you never use tells to pass. The tell is that your reads always end in a call. The source asks you to be as eager to pass as to call.
• You treat a read as certain. The source says reliability is a rough guess, seldom 100%, and must be balanced against other factors such as a player who never bluffs. The tell is that you make large calls on thin evidence.
• You overestimate the value of each tell. The listed dollar figures are maxima for catching it every time, and nobody sees everything at a table. The tell is that your expected winnings from reads far exceed your results.
• You use one reliability figure for every player. Weak players are more reliable (72% on Tell #32) than strong ones (55%). The tell is that you get burned by good players who fake the same mannerisms.

• ▸Player/seat: Identify the opponent and his type (weak, average, strong).
• ▸Observed action: Record exactly what he did and when (during a pot or between pots).
• ▸Motive: State in one line why he is probably doing it (for example, 'trying to look dangerous').
• ▸Category and direction: Mark the tell as Strong Means Weak, Noncombat, etc., and note whether it suggests strength or weakness.
• ▸Reliability for this player type: Copy the source percentage or give your own rough estimate.
• ▸Break-even check: Enter call ÷ (pot + call) for the decision at hand and compare it with the reliability.
• ▸Other factors: Note any contrary information, such as 'never bluffs.'
• ▸Response chosen: Write the action and whether it is a quiet frequency shift or a larger play.
• ▸My demeanor: Confirm you kept your baseline posture and tempo, yes or no, and describe any slip.

1. 1Classify every opponent as weak, average, or strong before you rely on any tell. Use evidence you can see: how they handle chips, how they pause in a spot, and whether they act when nothing is at stake. Treat an unknown player as a stereotype until you learn differently, since the source says that earns extra profit.
2. 2Look up the tell's reliability for that tier. The source rates each tell separately for weak, average, and strong players. Tell #1 (neat chips) runs 88% / 68% / 59%. Tell #31 (long hesitation, then a big raise) runs 80% / 75% / 65%. Reliability drops as skill rises.
3. 3Treat the tier-adjusted number as a probability to weigh, not a verdict. The source says reliability 'does not need to be, and seldom is, 100%,' and that you balance tells against all other factors, including a player who 'never bluffs.' Give weight to both facts.
4. 4Do the pot-odds arithmetic. With a $400 pot and a $100 call, you need to win only 20% of the time (lose $100 four times, win $400 once). A tell that suggests a 40% chance of a bluff justifies the call, even at a strong player's reduced reliability.
5. 5Separate tells from unaware players from tells from actors. Noncombat tells (chip stacking) come from people who are not acting at that moment. Combat tells come from players trying to convey the opposite of what they hold. Weak players act less, so their unconscious tells hold up better. Strong players are more likely to be acting.
6. 6Apply Caro's Great Law at the strong end of the scale: decide whether the player is acting. If so, work out what they want you to do and disappoint them. Where a tell is 'weak means strong' or 'strong means weak', that act is the information.
7. 7Resolve conflicting tells by judging which mannerism is most likely an act. The opponent is often aware of only some of his actions. Trust the mannerism he is least likely to be controlling, and discount the one he is performing.
8. 8Keep a cool, disinterested attitude and be as eager to find a reason to pass as to call. Re-rate the opponent whenever new behavior contradicts your classification.

Tell #1 (neat chips): a man has arranged his chips neatly and even lined up the markings on the sides. The source reads this as a non-reckless personality, so he chooses hands carefully, seldom bluffs, and shows little gamble. Reliability: weak 88%, average 68%, strong 59%. Against a weak player, you can lean hard on 'he won't bluff', so you fold marginal hands to his bets and don't expect a bluff. Against a strong player, the same stacking is only 59% reliable, so you treat it as a mild lean that you confirm with betting patterns. The source also notes that stacking is rarely used as a ploy, because most players only bother to act when the rewards are immediate. That is why the number stays high even for strong players. If his stacks later turn untidy, the source says his mood may have changed, so you re-rate him.

• If the opponent is weak, then give the tell its highest reliability (Tell #1 at 88%, Tell #31 at 80%) and act on it with more confidence, while still weighing his general tendencies.
• If the opponent is strong, then discount the tell (59% and 65% in those same cases). Ask whether he is acting, and use it only as one input alongside other factors.
• If the pot odds require only 20% and the tell, adjusted for skill, still suggests about 40% bluff, then call, since the tell does not need 50% accuracy to pay.
• If two mannerisms conflict, then follow the one least likely to be an act and treat the more deliberate-looking one as the performance.
• If the opponent is unknown, then assume the stereotype until his play shows otherwise, and update at once when it does.

• Using one reliability figure for all opponents. The tell: you call or fold on a strong player's tell with the confidence you would give a weak player's, and you pay for it.
• Treating reliability as certainty. The tell: you call a 'bluff' tell against a player who never bluffs, ignoring the source's instruction to give value to both facts.
• Misrating the opponent from a single sample. The tell: you label someone weak from one sloppy hand, then ignore later signs of acting or reversals.
• Overlooking that strong players may reverse tells deliberately. The tell: your reads fail only against your best opponents, because you take the surface behavior at face value instead of asking what they want you to do.
• Stacking up tell values without checking overlap or skill. The tell: you add up the dollar-value estimates, which assume mostly weak-to-average opponents, when the source says they overlap and are worth much less to those who misapply them.

• ▸Opponent / seat: name or seat number you are rating.
• ▸Skill tier (weak / average / strong): your classification, with the observed evidence behind it.
• ▸Stereotype assumed (if unknown): the default you are using until play shows otherwise.
• ▸Tell observed: the exact mannerism and its category (noncombat, weak means strong, instant reaction, etc.).
• ▸Source reliability by tier: weak __% / average __% / strong __%.
• ▸Adjusted reliability for this opponent: the figure for his tier, shifted by his betting history (e.g., 'never bluffs').
• ▸Acting or unaware?: if acting, what does he want you to do?
• ▸Pot odds needed: call cost ÷ (pot + call cost), compared with the adjusted bluff probability.
• ▸Decision and result: action taken, outcome, and whether the skill rating needs to change.

1. 1Treat true hand strength as the hidden variable and the behavior as the evidence. Write down what the player's behavior would look like if the hand were strong, and what it would look like if the hand were weak, before you decide anything.
2. 2Run the two-condition test first: (1) does he believe you're watching or listening, and (2) does your decision matter to him? If both are true, he is probably acting, and the behavior points opposite to his real strength. If either is false, take the behavior at face value as an unaware tell.
3. 3If he is acting, ask what he wants you to do, then disappoint him. A show of weakness, such as acting as if to pass, usually means a strong hand and probable bet or raise. A show of strength usually means a weak one.
4. 4If he is unaware, read the release of tension, not the performance. Trembling as chips go in, hands that guard cards, and a reluctance to look at the cards in a suspenseful spot all read as real strength. Looking right away in a low-pressure spot reads as no pressure.
5. 5Look for the motive behind the mannerism instead of matching it to a memorized list. A tell you have never seen can still be classified by asking whether the player is concealing, protecting, or releasing tension.
6. 6Check whether this opponent falls into the minority who do not follow the weak-means-strong pattern. Strong players give fewer tells and sometimes reverse the obvious ones, acting weak while being weak. Put them on a mental 'tricky' list and evaluate them carefully.
7. 7Cross-check the behavior against the betting sequence and the board. Ask whether the line he has taken is consistent with the strength the tell suggests. Then weigh the pot odds, since a read only needs to be right often enough to show a profit.
8. 8Act with a cool, disinterested attitude. You should be as eager to find a reason to pass as to call. Update your estimate of his hand strength, then commit to the call, raise, or fold.

In the passages' seven-card stud play-by-play, you hold aces-up (three pair, but the third pair doesn't count) with no pair showing. Player #1, previously in control, bets at the river. The pot is large and you are getting over 13-to-1 odds. He bets often as a bluff and sometimes pushes two pair for value, so a call is normal. Then the tell appears: he begins to tremble as he places chips in the pot, and he grips the table edge hard to hide the shaking. Bluffers bolster themselves, so this is not nervousness about a bluff. It is the release of tension after the suspense is over, which indicates a very big hand. His embarrassment shows the shaking is not an act, and it almost never is unless the player has read the book. You therefore lower your estimate of your own hand's strength relative to his. The example's point is that the behavior revealed his true hand strength, which the betting alone could not.

• If he believes you're watching AND your decision matters to him, then assume he is acting and move opposite to what he wants: weak-looking means strong, strong-looking means weak.
• If he is not aware of being watched or your decision doesn't matter, then take the behavior at face value as an unaware tell: trembling, guarding cards, and delayed looking at cards under pressure point to strength.
• If a player acts as if to pass out of turn while aware you're watching, then expect a bet or raise, because most players feel an obligation to the game and don't pass out of turn.
• If the opponent is a strong player or on your 'tricky' list, then discount the tell and rely more on betting patterns, because strong players give fewer tells and sometimes reverse them.
• If you can't tell whether he is acting, then stay disinterested and be as willing to pass as to call, rather than forcing a read.

• Memorizing individual tells instead of motives: the list is endless and you stall on any unfamiliar mannerism. The tell is that you can't classify a behavior you haven't seen before.
• Applying weak-means-strong to everyone: a minority of players don't follow the pattern, and strong players may act weak and be weak. The tell is repeated wrong reads against the same opponent.
• Reading a tell without checking whether the player is acting or unaware: you invert a genuine release of tension, such as trembling, into a bluff. The tell is that you ignore the two conditions of being watched and decision mattering.
• Treating a reliability percentage as exact: the figures are rough educated guesses and are worth more for comparing tells than for dollar amounts. The tell is that you act on one tell with no corroboration.
• Letting your own interest show or being unwilling to fold: you lean toward calling because of the pot size, without allowing that another opponent may beat you even if the bettor is bluffing. The tell is that you never find a reason to pass.

• ▸Opponent and skill level (weak/average/strong): note whether he is on your 'tricky' list.
• ▸Behavior observed: describe the mannerism and the moment it occurred.
• ▸Aware of being watched? (Y/N): condition 1 of the acting test.
• ▸Does my decision matter to him? (Y/N): condition 2 of the acting test.
• ▸Classification: acting or unaware, with the motive you infer (conceal, protect, or release tension).
• ▸What does he want me to do?: if acting, write it down, then plan the opposite.
• ▸Hand strength estimate: weak, medium, or strong, with a one-line reason.
• ▸Betting line and board consistency: does the action fit this estimate?
• ▸Decision and pot odds: call, raise, or fold, with the odds you are getting.

1. 1Classify the decision point before you analyze it. Ask: is this hand overwhelmingly strong or weak enough to dictate one exact tactic? Per Caro, few hands are. If the hand is borderline, drop the strategic prediction of what the opponent 'should' do and switch to observation.
2. 2Apply Caro's Law as a test of the environment: are the opponent's choices clearly connected to their benefits? If not, expect unpredictable outcomes. Even when they are connected, expect occasional surprises, because disciplined players still make many borderline decisions.
3. 3Stop trying to say how a given opponent 'would' play a hand. Caro notes you often cannot say whether they would play it at all, because they often don't know until the last second. Record what they actually do (watch and listen) rather than what they should do.
4. 4Look for the borderline marker. A genuine delay is one: in the Tell #18 example, a man leans back and ponders after the final-card bet. Caro reads that as a genuine borderline situation, since players seldom delay limit games for extra thinking time.
5. 5Before treating a mannerism as an act, run the two-part actor test: (1) he believes you are watching or listening, and (2) your decision matters to him. If either fails, treat the behavior as unaware and read it at face value.
6. 6Once you identify doubt, decide whether you can influence it. Opponents in borderline spots are looking for anything to tip the decision, so your speech and behavior carry extra weight. If you bet a real hand, encourage the call; if you are bluffing, discourage it.
7. 7Price the read with pot odds, not certainty. A tell need not be 50% accurate: with a $400 pot and a $100 call that beats only a bluff, you need to be right just 20% of the time. A read suggesting a 40% bluff chance justifies the call.
8. 8Rate the tell's reliability for the specific situation and opponent type (Tell #18 lists 65% weak, 70% average, 70% strong). Weigh it with other factors rather than acting on it alone.

Caro's Pot A and Pot B. Nine players hold identical hole cards, rank for rank and suit for suit (for example seat 3 has K♦ Q♦, seat 6 has 4♦ 4♥, seat 9 has K♣ 2♣), and the flop, turn, and river are identical in both pots. The only difference is that the players replay the hand with the first pot wiped from memory, in the same environment and with the same emotions. Yet Pot A and Pot B end with different main players and different winners, one pot almost $4,000 and the other under $1,000. In Pot B the first-round action is blinds of $50 and $75, a $150 raise, calls and folds, and a flop of J♥ 9♦ 4♣ that gets mostly checks. A strategic model built on the cards cannot predict this. The cards were the same; the weak calls, unexpected raises, and borderline decisions differed. The takeaway Caro draws is that you must watch and listen to what opponents are doing rather than only analyze what they should do.

• If the hand is not overwhelmingly strong or weak, then assume the opponent's action is at whim and rely on behavioral reads over strategic modeling.
• If an opponent shows a genuine delay (leaning back to think) after you bet, then treat it as real doubt: encourage the call if your bet is value, discourage it if you are bluffing.
• If an opponent comes out raising after a long hesitation, then there is almost a 50% chance he is bluffing, so call.
• If a player both believes you are watching and has a stake in your decision, then treat the mannerism as possibly an act; if either condition is missing, read it as unaware.
• If pot odds require you to be right only 20% of the time and your read puts the bluff chance at 40%, then call even though the tell is far from certain.

• Plotting strategy like a chess match, as if opponents act in one predictable way for given cards. The tell is that you keep being surprised by 'wrong' calls and raises, and you try to explain them as errors.
• Assuming a player's past behavior with a hand predicts the same behavior next time. Caro's replay shows identical players with identical cards producing different pots; the tell is over-reliance on a single prior observation.
• Dismissing whim-driven opponents as simply bad. Their wide, spontaneous play can approximate game-theory randomization; the tell is that you assume they are exploitable by strategy alone.
• Demanding near-certainty before acting on a read. The tell is that you pass on profitable calls because the tell is 'only' 65% or 40% accurate, ignoring that 20% suffices at the stated odds.
• Misreading acts as unaware behavior, or vice versa, by skipping the two-part test (is he watching, does your decision matter). The tell is that you take staged behavior at face value.

• ▸Hand/situation: one line on the board, action so far, and bet size facing the opponent.
• ▸Borderline check: is the hand overwhelmingly strong or weak enough to dictate one tactic? (Y/N; if N, proceed to a behavioral read.)
• ▸Observed behavior: write exactly what the opponent did (delay, lean back, instant bet, etc.), not what they should have done.
• ▸Watching test: does he believe you're watching or listening? (Y/N)
• ▸Stake test: does your decision matter to him? (Y/N; two Ys means a possible act.)
• ▸Estimated bluff chance: your percentage read, adjusted by the tell's reliability for this player type.
• ▸Pot odds required: amount to call divided by (pot + call), compared with your estimated bluff chance.
• ▸My influence move: encourage the call, discourage it, or stay neutral, matched to whether my bet is value or a bluff.
• ▸Outcome and reliability note: what happened, and whether the read held, for updating the tell's reliability.

1. 1Establish a baseline before the bet. Note how the player acts while calm and in control (hands, breathing, eye contact). Tension tells only mean something as a change from that baseline, like the player 'previously in control' who then begins to tremble.
2. 2Time the reaction. Shaking that starts as the player sees his card, reaches for chips, or places the bet is tension release. The suspense has ended because the hand is made. Treat it as a made hand, not as fear.
3. 3Check whether the shaking is uncontrollable. Trembling that grows through the bet (slight at the reach, 'shaking badly' while betting) is real. Real shaking also comes with concealment: gripping the table edge, pinching a card, guarding the river card. Embarrassment about the shaking signals it is not an act.
4. 4Read calm differently. A bettor who stays calm, still, and quiet with a big pot at stake is not showing strength. Bluffers instinctively appear calm out of fear of discovery. Don't read calm as a big hand.
5. 5Look for fear signs only as a bluff cluster: very shallow breathing or held breath, avoiding looking at you or the pot. Be careful about reversals. Some players stare at you blatantly because they read that eye avoidance signals a bluff.
6. 6Run the impatience check. If a player has bet and waits for your call, rhythmic finger tapping usually means he is nearly certain he's winning and the only suspense is whether you call. Learn whether this is his habit. If he usually taps and this time bets without tapping, you can be almost 100% sure he is bluffing or thinks the hand is vulnerable.
7. 7Apply the jeopardy rule. Obvious nervousness appears mostly when the player is in little danger. When he's in great jeopardy he struggles to hide nervousness until the hand is decided. So visible nerves point to safety, and suppressed nerves point to danger.
8. 8Act on the read, sized to its value. A trembling bet means fold unless you hold something thrilling. Remember a fold saves only a fraction of one bet, because you might have folded anyway and the tell isn't 100% accurate.

Seven-card stud, $10 ante, $50 bets early and $100 on later streets. A player looks at his final card, reaches for his chips, and begins to tremble slightly. By the time he completes his bet his right hand is visibly shaking, and his left hand pinches the river card hard to stop that hand shaking as well. He actually holds a straight flush. In a second example, the pot is huge and you're getting over 13-to-1 to call. Player #1, previously in control, bets and trembles as he puts chips in the pot, then grips the table edge to hide it. This is not a bluffer's fear, because 'bluffers bolster themselves.' It is release of tension from a very big hand, somewhere from a big flush up to a full house or quads. You fold, though you'd normally call at those odds. Player #5, who doesn't know the tell, has an ace-high flush, raises, gets reraised, and calls. The mistake costs him an extra $200, and Player #1 shows the straight flush.

• If a player who was calm begins to tremble as he bets, and he tries to hide it, then fold anything short of a monster. Shaking is release of tension, not fear.
• If a player who usually taps a finger while waiting for your call bets without tapping, then treat him as bluffing or holding a vulnerable hand, and consider calling.
• If a bettor looks completely calm in a big pot with no baseline of nervousness, then do not read it as strength. Bluffers instinctively act calm.
• If the player shows shallow or held breath and avoids looking at you or the pot, then lean toward bluff. If he stares at you blatantly, don't trust the stare alone, because he may be compensating for something he read.
• If the player has shown visible nerves in a spot where he's clearly in danger, then distrust the read and look for a second tell. Players in real jeopardy suppress nerves until the fate is decided.

• Reading trembling as fear and calling. Tell: you reason 'he's nervous, so he must be bluffing.' The passage says many millions are lost yearly this way.
• Treating calm as strength. Tell: you fold because the bettor looks relaxed. Bluffers instinctively appear calm.
• Raising after the tell instead of folding. Tell: you hold a strong but second-best hand, like Player #5's ace-high flush, and the raise costs extra bets.
• Applying the finger-tap read without a baseline. Tell: you treat tapping or its absence as meaningful without knowing whether the player always taps. Absence means something only if tapping is his habit, and the passage places the habit mostly in limit games.
• Overvaluing a single tell. Tell: you assume a fold saves the whole pot. The real savings is a fraction of one bet, since the tell isn't 100% accurate and you might have folded anyway.

• ▸Player/seat and game: who you're watching and the limit structure.
• ▸Baseline behavior: how he acts when calm (hands, breathing, eye contact, tapping habit).
• ▸Pot size and cost to call: the odds you're getting.
• ▸Timing of the reaction: when it began (seeing card, reaching, betting, waiting for your call).
• ▸Physical sign observed: trembling, finger tapping, shallow or held breath, avoiding looks, staring, or calm.
• ▸Concealment attempt: gripping table or card, covering mouth, guarding a card. Note if present, since it suggests the shaking is genuine.
• ▸Is he in jeopardy or nearly safe? Judge whether the nerves fit the danger level.
• ▸Read: made hand (release of tension) or bluff / vulnerable hand (suppressed fear).
• ▸Action and result: what you did, what he showed, and whether the read held.

1. 1Start from the premise that most tells exist because players try to conceal hand strength by conveying the opposite. Each time an opponent does something noticeable, ask the first question: is he acting or not? Caro's Great Law: players either act or they don't.
2. 2Test the two preconditions in the definition. Does he believe he is being watched? Does your decision matter to him (a call or fold changes his outcome)? If either is missing, treat the behavior as unacted, such as a hand shared from the start or a genuine quick double-check, and read it at face value.
3. 3If both are present, name the motive instead of cataloguing the gesture: he wants you to do X. Weak hands try to look strong, and strong hands try to look weak. State X in one line before you decide anything.
4. 4Run the reversal: do the opposite of what he wants. If he wants a call, lean toward folding. If he wants you to fold, lean toward calling. Keep a cool, disinterested attitude and be as eager to find a reason to pass as to call.
5. 5Check for the actor's persistence. A player who has already bet and keeps staring at his hand under the threat of a call is performing a strength act, so he likely holds a weak hand or a bluff. A genuine double-check is brief: he looks only long enough to learn what he needs, then looks away and guards the hand.
6. 6Check the timing of the motion. In the river example, the opponent starts reaching for chips before the card is turned, keeps staring at the board, and completes the bet only after he sees the card. The one smooth motion is the act. Read the whole sequence, not one frame.
7. 7Weigh reliability against the situation. A tell need not be 50% accurate. With a $400 pot and a $100 call against a bluff-only holding, you need to win just 20% of the time. Combine the tell with what you know of the opponent, such as whether he ever bluffs, and weight both.
8. 8Optionally apply pressure to induce the act. Faking a calling motion when a bettor starts to bet can make a weak bettor look back at his hand and bet with extra emphasis. Use it sparingly, since overdoing it lets opponents catch on.

Hold 'em, river. You bet $100 on the turn and only the player in seat #6 called. The pot is much larger than the bet. The river card, a 3♣, is not yet face up when seat #6 reaches for his chips to begin a bet. He stares at the board as his hand continues, and only after he recognizes the river card does he complete the bet, so it looks like one smooth motion. Caro reads this as acting: the opponent wants to make you suspicious of his bet so you will call. He completes the bet only if he makes his flush. Otherwise he would instantly turn the motion into a checking motion. The act is therefore backward from its surface message, since an apparent hesitant or suspicious bet is actually a strong one. Normally you would call reluctantly, because the river card was unlikely to help him except by completing a flush, and the pot odds justify hoping he bluffs. Here you fold, saving $100 you would almost certainly have lost, and the cards confirm you were right.

• If the player believes he is watched and your call or fold affects him, then assume he is acting and ask what he wants you to do before you act.
• If you identify what he wants, then disappoint him: do the opposite.
• If a bettor keeps staring at his hand after betting under the threat of a call, then treat it as a weak hand or a bluff. If he glances quickly and looks away, treat it as a genuine check and ask what he was checking for.
• If a tell is not clearly acted, such as a hand shared from the start or a quick instinctive peek, then do not apply the reversal. These players are unaware, not actors.
• If the tell conflicts with the opponent's known tendencies, such as he never bluffs, then weigh both. A tell does not need to be 50% reliable, but calibrate it to the pot odds and the situation.

• Treating every mannerism as acting. Unaware behavior, such as a hand shared from the beginning or a genuine double-check, gets reversed when it should be read straight. The tell: you cannot name what the player wants you to do.
• Memorizing gestures instead of motives. A new gesture leaves you with no read. The tell: you can only decide when you've seen the exact mannerism before.
• Reading only the surface of a smooth motion. You see a confident bet and miss that he began before the card appeared and completed after seeing it. The tell: you describe the bet but not its timing.
• Treating a tell as 100% or ignoring it as under 50%. Both are wrong, since tells give indications to balance against other factors. The tell: your decision never changes with the pot odds.
• Losing the cool, disinterested attitude and hunting only for a reason to call. The tell: you call out of curiosity or hope when you have no reason to pass.
• Overusing a pressure ploy such as the faked bet or call. The tell: observant opponents start responding to it.

• ▸Opponent / seat: who you are reading.
• ▸Observable behavior: the exact motion, including timing relative to board cards or his bet.
• ▸Watched? (Y/N): does he believe he is observed?
• ▸My decision matters to him? (Y/N): does a call or fold change his result?
• ▸Acting or unaware: if both answers are yes, mark acting. Otherwise mark unaware and read at face value.
• ▸What he wants me to do: one line, such as call, fold, or bet.
• ▸Surface message vs. likely true strength: what he is conveying and its opposite.
• ▸Reliability estimate and pot odds: your rough tell accuracy versus the break-even percentage needed.
• ▸Decision and result: the action you took, doing the opposite of what he wants, and what he showed.

1. 1Sort every tell into one of two bins before you act: aware (an actor trying to deceive) or unaware (the player isn't bothering to act right now). Unaware tells are the subject here, and the same player is an actor at other moments.
2. 2Look for trembling after a bet or on a big card. A shaking hand means release of tension from a big hand, not concern. Treat it as strength and stop calling players who suddenly tremble. Caro says millions of dollars are lost yearly this way.
3. 3Look for impatience after a bet. A finger tapping rhythmically while the player waits for your call usually means he is already fairly certain he is winning. Note whether this is his habit. If he normally taps and bets once without tapping, you can be almost 100% sure he is bluffing or thinks the hand is vulnerable.
4. 4Check for a jittering knee under the table. A bettor with a jittering knee is extremely unlikely to be bluffing. If he normally jerks his knee between and during hands and stops after betting, expect a bluff. Caro values this tell at more than $3 per hour in a typical $10 limit game.
5. 5Watch the second look at the hand. A genuine double-check is brief: the player looks only long enough to learn what he needs, then looks away and guards the hand. If he keeps staring after betting, he is weak or bluffing and acting. Ask what he was checking for. In seven stud, a quick glance at his hole cards when a third suited card arrives means he does not already hold two of the suit, so no flush yet.
6. 6Test for fearlessness. A player holding a big hand talks naturally and rationally, may smile broadly, or has a genuine giggle. A bluffer stays silent, forces speech, talks gibberish, or forces a smile. Ask a harmless question after the bet and note the quality of the answer.
7. 7Read movement against stillness. A bettor who keeps moving about impatiently, being himself, usually has a big hand. Bluffers stay almost unmoving for fear of triggering a call. Discount all of this when the motions and comments look designed to make you fold.
8. 8Check shared hands. If the player let a girlfriend or onlooker see his cards from the start of the hand, lean toward strength. If the kibitzer arrived mid-hand, watch the kibitzer instead, since he tends to act opposite the hand's strength. Adjust by player type: strong players show this tell less and may use it as a bluff ploy.

Tell #10 from the passages: a seven-stud player looks at his seventh card. His board shows three of clubs, eight of hearts, five of spades and six of hearts. His hole cards are the five of hearts and four of hearts. He holds a pair of fives, a possible straight, a possible flush and a possible straight flush. In Photo 16 his right hand is slightly blurry because he is trembling as the size of what he caught registers. He is not acting. This is a release of tension, and it comes with a monster. The correct read is strength, so you do not call him down with a marginal hand. The same logic applies to the shared-hand tell (Tell #8): a man lets his girlfriend see his cards after she walks up mid-pot. He is likely proud of a hand good enough to justify his investment. Reliability is listed at 68% for weak players, 65% for average players and 55% for strong players. Value per hour is $0.21 at $1 limit, $0.60 at $10 limit and $0.66 at $100 limit.

• If a player trembles after a big card or a bet, then read strength and do not call with a marginal hand.
• If a habitual finger-tapper bets but does not tap, then assume a bluff or a vulnerable hand. If he taps, assume he is nearly sure he is winning and he wants a call.
• If a bettor's knee jitters under the table, then he is extremely unlikely to be bluffing. If a habitual knee-jerker goes still after betting, then expect a bluff.
• If a player looks back at his cards only briefly and then guards them, then treat it as a genuine check and ask what he was checking for. If he keeps staring, then treat him as weak and acting.
• If a bettor answers a casual question rationally, smiles genuinely or giggles, then fold marginal hands. If he stays silent, forces speech or forces a smile, then call more often.

• Reading trembling as fear. The tell is a shaking hand, and the correct reading is a big hand. Treating it as nerves from a bluff costs you money.
• Ignoring the player's baseline. Tapping and knee-jerking only mean something against that player's normal habit. The tell is a change from baseline, such as a tapper who bets without tapping.
• Confusing a genuine tell with an act. A forced smile, staring at you blatantly, a long second look at cards and big motions designed to make you fold are all acts that signal weakness. The tell is that they last too long or look performed.
• Taking a kibitzer's behavior at face value. A friend who arrives mid-hand acts opposite the hand's strength. Only a hand shared from the beginning is a genuine tell.
• Assuming nervousness equals a bluff. Players are usually nervous visibly only when in little danger. Bluffers tend to appear calm, with shallow breathing or held breath. Over-reading a jittery opponent as weak is the usual error.

• ▸Player / seat: name or description and whether he is weak, average or strong.
• ▸Baseline habits: normal tapping, knee movement, talking and smiling before any bet.
• ▸Situation: game, limit, street and whether he has already bet.
• ▸Observed behavior: tremble, tap, knee jitter, animated movement, genuine smile or giggle, natural talk, glance at chips.
• ▸Change from baseline: present or absent, and which habit stopped or started.
• ▸Genuine or acted check: brief look then guard (genuine) vs. prolonged stare or forced smile (acted).
• ▸Kibitzer or shared hand: onlooker present, when he arrived, and when the hand was shared.
• ▸Read (strong/weak/unclear): your conclusion and the behavior behind it.
• ▸Action and result: what you did and what showed down, to calibrate this player's reliability.