ONE OF SEVEN WAYS OF SEEING
Recognize the shortcuts that quietly shape your judgment.
Contrast can distort judgment when an option is evaluated mainly against its surroundings rather than on its own merits. Small changes can also escape notice when each is compared only with the immediately preceding state.
People initially draw dispositional inferences about others automatically, but under certain conditions they correct these inferences, though emotional reactions linger even after correction.
Counterfactual thinking involves imagining alternative outcomes to events, especially those preceded by exceptional actions, leading to heightened emotional reactions and regret. It is often studied in psychology and decision-making.
Counterfactual thinking compares what happened with an imagined alternative. Near-misses can make a better outcome especially salient. The reported medalist study found a difference in ratings of how strongly thoughts focused on an almost-achieved outcome.
In the cited medalist studies, greater focus on almost finishing higher was associated with lower ratings of expressed happiness. The authors interpret this pattern as support for a counterfactual explanation of the silver–bronze difference.
In studies of Olympic medalists, observers rated bronze medalists as happier than silver medalists. The researchers proposed that silver invited comparison with nearly winning gold, while bronze invited comparison with winning no medal. These imagined alternatives can help explain satisfaction beyond rank alone.
Counterfactual thinking compares an outcome with what might have happened. The bronze-medal hypothesis suggests that silver medalists may focus on missing gold while bronze medalists focus on avoiding no medal. This excerpt describes how reactions were rated, but does not give the results.
Research on overconfidence in probability judgments reveals significant cross-cultural variations: contrary to intuitive beliefs, Asian respondents often exhibit greater overconfidence than Westerners when assessing the correctness of their general knowledge. This chapter explores the causes, generalizability, and implications of these differences.
Studies of general-knowledge judgments found different levels of overconfidence across national samples. Some Chinese, Indian, Turkish, and Brazilian samples were more overconfident than their American comparison groups; Singaporean and Japanese results differed. These findings do not establish a single pattern for whole regions or for other kinds of decisions.
Japanese and Canadian students in the reported studies predicted earlier completion than they achieved, despite recalling later completion of similar past work. Their explanations of past failures differed, suggesting that optimistic planning can occur without a self-serving attribution pattern.
Curiosity encourages questions and exploration beyond immediate practical goals. The passage argues that education and continued inquiry can support learning throughout life.
The cognitive bias where knowledgeable individuals struggle to imagine what it's like to lack that knowledge, causing them to overestimate others' understanding and communicate ineffectively.
Data mining bias occurs when patterns or causal relationships are falsely identified in random or coincidental data, leading to superstitious beliefs and conspiracy theories. It exploits human tendency to see structure where none exists.
The tendency to find patterns in historical data by testing many trading rules, leading to false confidence in strategies that are merely overfitted to past data and suffer from survivorship bias.
The dead salmon fMRI study illustrates how failing to correct for multiple comparisons in large datasets can produce statistically significant but meaningless results, highlighting the danger of false positives in scientific research.
Human beings are inherently egocentric, favoring themselves subconsciously. To counteract, ask what a rational person would do in a similar situation.
People often try to correct perceived biases in their judgments, but their debiasing attempts frequently fail, leading to insufficient correction, unnecessary correction, or overcorrection—sometimes resulting in judgments that are more biased than the original.
The planning fallacy can persist even when people estimate aggregate completion rates or imagine plausible delays. In the studies described here, linking a specific upcoming assignment to the timing of similar past assignments eliminated the usual optimistic bias for that task.
Debiasing programs aim to improve judgment by changing how people approach a task. The source describes military, educational and social-skills programs while emphasizing how difficult it is to isolate the effect of judgment training on real-world behavior.
People rely on naive theories to detect and correct bias in their judgments, but they are more likely to attribute bias to others than to themselves due to motivational and cognitive factors, making self-debiasing difficult even among experts.
Deceptive cropping removes context from a video or quotation so that it appears to support a different claim. Checking the longer recording can reveal the omitted qualification, question, or population being discussed.
Decision weights describe how probabilities influence choices, rather than what probability people believe an event has. People may give small chances disproportionate weight and respond especially strongly to a change from near certainty to certainty.
Decisions based on global impressions from experience tend to underweight rare events because they are not salient unless they attract separate attention, in contrast to choices from explicit description which often lead to overweighting of rare events.
A technique that stops group discussions from getting stuck in a narrow frame by challenging status-quo bias and setting tripwires. It involves seeking out solutions from others and creating triggers for action.
Deductible aversion is a preference for lower insurance deductibles that can lead people to overpay for coverage. In some plans, the extra premium exceeds the largest possible reduction in out-of-pocket costs, making the lower-deductible option more expensive regardless of claims.
Deductible aversion is a preference for low insurance deductibles even when a household could bear a larger loss and save on premiums. Thaler and Sunstein argue for concentrating coverage on losses that would cause financial hardship.
Default options and automatic enrollment significantly influence retirement savings behavior, leading to higher participation rates when workers are automatically enrolled with an opt-out option rather than having to actively opt in.
People often retain a preset option. In organ-donation systems, that can affect recorded consent, although consent status alone does not determine how many donations or transplants actually occur.
The default heuristic is the tendency to choose the default option or maintain the status quo. It can be sensible due to uncertainty, transaction costs, or past experience, but it can also bias choices when psychological prominence does not align with outcome quality.
Default investment options, such as target-date funds, use inertia to improve retirement savings by reducing poor choices like market timing. They are a nudge that protects investors from common behavioral biases.
Defensive bolstering is a cognitive bias where decision makers engage in self-justifying thinking when accountable to a skeptical audience for irreversible actions, leading to decreased tolerance of dissonant arguments and increased pro-attitudinal thoughts.
Galef treats defiant words such as proud, unapologetic, and fearless as cues that speakers see their views as embattled. The language can invite a closer look at that self-image, but does not by itself show whether a view is marginal or its supporters face real pressure.
A critique of the tendency of even expert statisticians to neglect sample size and overinterpret single observations, illustrating the gap between theoretical statistical knowledge and practical reasoning.
Taleb argues for learning from historical anecdotes while distrusting theories that claim to uncover laws of history. He uses past accounts and simulated futures to develop judgment about randomness.
The tendency to be less willing to spend money when it is in the form of a single large denomination (e.g., a $100 bill) compared to an equivalent amount in smaller denominations (e.g., ten $10 bills).
Deprival super-reaction syndrome is a cognitive bias where people irrationally overvalue what they are about to lose, leading them to throw good money after bad rather than cut losses. Combined with over-optimism, it distorts rational decision-making, especially under stress.
Bevelin uses deprival syndrome to describe how losing something valued—or facing its loss—can intensify attachment and provoke an excessive response. His examples include threatened benefits, losing investments, near misses, and scarce goods.
Deprival-Superreaction Tendency describes humans' irrational, intense reaction to even small actual or threatened losses of valued possessions, status, or opportunities—a behavior analogous to a dog instinctively biting when food is taken from its mouth.
Description-dependence is the phenomenon where people's judgments, decisions, and preferences vary based on how a problem or option is described, even when the underlying information is logically equivalent. This cognitive bias challenges the assumption of a single canonical representation and highlights the need for descriptive theories of belief and choice.
Desirability bias occurs when what we want to happen influences what we predict will happen. Adam Grant illustrates it with a forecaster who shifted toward his preferred election outcome, then acknowledged the mistake. Recording assumptions and reasons to change a forecast can help expose this bias.
The authors argue that promising complete control of blood glucose in type 1 diabetes can encourage self-blame when outcomes vary. Their concern is a cycle of frustration and disengagement, not a claim that self-management cannot influence outcomes.
The difficulty effect is the tendency for confidence to exceed accuracy on hard tasks and fall short of accuracy on easy ones. One proposed explanation is that people attend more to the balance of arguments than to how much reliable evidence supports them.
Diffusion of responsibility occurs when individuals in a group assume that others are responsible for taking action, leading to inaction or lack of accountability. This bias is common in organizational settings with unclear roles and responsibilities.
The dilution effect is a cognitive bias where adding nondiagnostic or irrelevant information reduces the perceived predictive power of diagnostic information. It is often explained by the representativeness heuristic, but may also reflect rational adherence to conversational norms.
Caulfield and Wineburg criticize vague native-advertising labels and report research in which readers often overlooked labels at the top of an article. They argue that situation-specific FTC guidance left publishers room to make paid content hard to recognize.
People tend to evaluate the strength of evidence for a hypothesis without considering how well the same evidence fits alternative hypotheses, leading to overconfidence. This is demonstrated by the Barnum effect and a coin-spinning experiment.
In the probability-judgment studies described here, participants tended to be overconfident when competing hypotheses were hard to distinguish and underconfident when the evidence distinguished them strongly.
The disjunction fallacy occurs when people violate the probability rule that a disjunction (or superordinate category) is at least as probable as any of its subsets, often rating the subset as more likely. This bias is explained by the representativeness heuristic, where judgments are based on similarity rather than normative probability.
The disjunction fallacy occurs when a broader, inclusive event is judged less probable than an event it contains—for example, humanities less probable than literature. Conversational preferences for specific statements are one proposed explanation for this probability error.
The disjunction rule states that the probability of a disjunctive event (A or B) cannot be less than the probability of any individual disjunct. Studies show that people often violate this rule when ranking outcomes by willingness to bet or by perceived probability.
The source describes how dislike can lead people to overlook virtues, condemn unrelated people by association and distort facts. Its family and political anecdotes illustrate how hostility can shape judgment and obstruct mediation.
Taleb argues that scientists can be drawn to sensational findings. Combining evidence across studies can help place a striking result in context, although a review’s reliability depends on its methods and included evidence.
The disposition effect is the tendency to sell assets that have increased in value while holding assets that have decreased in value, often to avoid realizing losses and the associated regret.
People may defend past commitments to reduce the discomfort of questioning them. In disputes, they may also devalue a proposal because an opponent offers it or because it becomes available. These processes can reinforce distrust, though reactive devaluation and resistance to threatened freedom are distinct ideas.
Sweden’s Premium Pension Plan, launched in 2000, offers a case for examining how defaults and the number of fund choices affect retirement saving. This excerpt describes the original design and poses the question of how long nudges last; it does not provide the later results.
Galef argues that some research linking self-deception with happiness fails to establish whether participants’ positive beliefs are false. She distinguishes feeling good about yourself from deceiving yourself, and suggests coping strategies that preserve accurate judgment.
Taleb argues that critical thinking can remain confined to one subject. His philosopher-financier example shows how someone may question uncertainty in philosophy while leaving the assumptions of financial models unexamined.
Domain dependence is understanding an idea in one setting but failing to recognize it in another. Taleb illustrates the problem through exercise, medicine, and economic policy, then describes his own failure to connect antifragility with post-traumatic growth.
Verbal reports of attitudes, preferences, and behaviors are often unreliable due to context effects, question wording, and social desirability biases. Instead, behavioral measures and systematic self-experimentation provide more accurate insights.
Higher dopamine levels in the brain increase pattern perception and reduce skepticism, making people more susceptible to seeing patterns in randomness, as seen in gambling and belief in pseudoscience.