Tag: decision-making

33 pages tagged decision-making.

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Chapter 2: Trade-Offs and Opportunity Cost — Economics 101

Every choice has a price tag, even when no money changes hands. This chapter introduces opportunity cost (the next-best alternative you gave up), marginal analysis (compare one more unit’s benefit to its cost), and the three core assumptions that classical economics quietly relies on.
Chapter 1: The Characters of the Story — Thinking, Fast and Slow

An introduction to the two systems of thought — the automatic, intuitive System 1 and the deliberate, effortful System 2 — the cast of characters whose interaction explains virtually everything in this book.
Chapter 2: Attention and Effort — Thinking, Fast and Slow

System 2 runs on a limited budget of attention — effortful tasks compete for the same scarce resource, so multitasking degrades performance and cognitive load makes us literally blind to the obvious.
Chapter 3: The Lazy Controller — Thinking, Fast and Slow

System 2 is constitutionally lazy — it conserves cognitive effort whenever possible, which means most judgment is left to System 1 by default, including judgments where System 2’s oversight would catch critical errors.
Chapter 5: Cognitive Ease — Thinking, Fast and Slow

When processing feels easy, System 1 treats that fluency as a signal of truth, safety, and quality — a shortcut that creates systematic biases toward the familiar, the clear, and the repeated.
Chapter 6: Norms, Surprises, and Causes — Thinking, Fast and Slow

System 1 maintains a model of what is normal and registers surprises as violations — then automatically generates causal explanations, even for random events, because causal stories feel more satisfying than statistical ones.
Chapter 7: A Machine for Jumping to Conclusions — Thinking, Fast and Slow

System 1 builds confident conclusions from incomplete evidence — suppressing doubt, ignoring absent information, and constructing the most coherent story from what it can see (WYSIATI).
Chapter 9: Answering an Easier Question — Thinking, Fast and Slow

When System 1 cannot quickly answer a hard question, it substitutes an easier related question and answers that instead — the core mechanism of heuristic judgment, which is fast, automatic, and systematically biased.
Chapter 10: The Law of Small Numbers — Thinking, Fast and Slow

Small samples produce wildly extreme results by chance — yet System 1 instinctively seeks causal explanations for what are purely statistical artifacts, generating systematic bias in research, medicine, and everyday judgment.
Chapter 14: Tom W’s Specialty — Thinking, Fast and Slow

When a vivid, specific description is available, people judge probability by similarity to a prototype — ignoring base rates entirely. The representativeness heuristic produces confident probability estimates that are systematically wrong whenever the description is more diagnostic than the statistics.
Chapter 15: Linda: Less is More — Thinking, Fast and Slow

The conjunction fallacy — a specific description can feel more probable than a general one, even though this violates probability theory. When representativeness overrides logic, adding detail increases judged probability, which is mathematically impossible.
Chapter 17: Regression to the Mean — Thinking, Fast and Slow

Extreme performance in any direction is partly luck — and luck does not repeat. Regression to the mean is a mathematical certainty whenever measurements are imperfect, but it is invisible to System 1, which generates causal explanations for statistical inevitabilities.
Chapter 19: The Illusion of Understanding — Thinking, Fast and Slow

Hindsight makes outcomes seem inevitable — and this illusion of understanding the past produces false confidence in our ability to predict the future. The narrative fallacy is the mind’s compulsion to turn random sequences of events into coherent, causal stories.
Chapter 21: Intuitions vs. Formulas — Thinking, Fast and Slow

Simple actuarial formulas consistently outperform expert clinical judgment in low-feedback prediction domains. The evidence is overwhelming and has been known for decades — yet it is resisted because it threatens expert identity and the felt value of holistic judgment.
Chapter 22: Expert Intuition: When Can We Trust It? — Thinking, Fast and Slow

Expert intuition is genuine in domains with regular feedback and sufficient practice — it is an illusion in domains without them. The key diagnostic is whether the environment offers enough valid, fast, unambiguous feedback for System 1 to learn reliable patterns.
Chapter 24: The Engine of Capitalism — Thinking, Fast and Slow

Optimism bias is pervasive — most people believe they are above average and their plans will succeed at higher rates than the base rate. This bias is costly in many contexts but may be the psychological engine that drives entrepreneurial risk-taking and economic dynamism.
Chapter 25: Bernoulli’s Errors — Thinking, Fast and Slow

Expected utility theory has dominated economic models of decision-making for 300 years — but it makes a critical error. It judges outcomes by their final states rather than by gains and losses from a reference point. This error is not a detail; it is the foundation of prospect theory.
Chapter 26: Prospect Theory — Thinking, Fast and Slow

Prospect theory replaces expected utility theory with a model of how people actually evaluate outcomes: relative to a reference point, with loss aversion (losses hurt more than equivalent gains help), and diminishing sensitivity in both directions.
Chapter 27: The Endowment Effect — Thinking, Fast and Slow

Owning something changes how you value it — not because the object has changed, but because parting with a possession is coded as a loss, and losses loom larger than equivalent gains. The endowment effect is one of the most replicated demonstrations of loss aversion.
Chapter 28: Bad Events — Thinking, Fast and Slow

Loss aversion is a pervasive feature of human psychology — bad events dominate good ones in nearly every domain of life, from relationships to evolution. The asymmetry between the impact of gains and losses shapes behavior far beyond financial decisions.
Chapter 29: The Fourfold Pattern — Thinking, Fast and Slow

Prospect theory predicts four distinct risk attitudes depending on whether outcomes are gains or losses and whether probabilities are high or low. This fourfold pattern explains apparently contradictory behavior — insurance-buying and lottery-playing by the same person.
Chapter 30: Rare Events — Thinking, Fast and Slow

People overestimate the probability of unlikely events and overweight them in decisions — driven by availability, vividness, and the probability weighting function. This overweighting explains both the purchase of lottery tickets and the fear of terrorism.
Chapter 31: Risk Policies — Thinking, Fast and Slow

Individual risky choices should be evaluated as part of a policy, not in isolation. Narrow framing — evaluating each gamble independently — produces loss-averse choices that are individually defensible but collectively suboptimal. Broad framing corrects this.
Chapter 32: Keeping Score — Thinking, Fast and Slow

Mental accounting — treating money in different accounts as if it were not fungible — produces irrational decision-making. Sunk costs, house money effects, and regret aversion all follow from the way System 1 tracks gains and losses in mental accounts rather than total wealth.
Chapter 33: Reversals — Thinking, Fast and Slow

When the same options are evaluated jointly vs. separately, preferences reverse — because different attributes become salient in each mode. Joint evaluation activates analytical comparison; single evaluation activates emotional response. Neither mode consistently produces the best decisions.
Chapter 34: Frames and Reality — Thinking, Fast and Slow

Equivalent facts described differently produce different decisions — not because people are confused, but because frames determine which aspects of reality are attended to. Frames are not neutral; they are the reality System 1 operates on.
Chapter 35: Two Selves — Thinking, Fast and Slow

The experiencing self and the remembering self are two different agents with different interests. The remembering self dominates life choices — but it is governed by peak and end experiences, ignoring duration. Duration neglect means we optimize for memory, not for how we actually feel.
Chapter 36: Life as a Story — Thinking, Fast and Slow

The remembering self evaluates lives as stories with dramatic arcs, not as accumulations of experienced moments. A good story ending can make an entire period feel worthwhile; a bad ending can retroactively taint a long good period. Narrative logic dominates experiential accounting.
Chapter 37: Experienced Well-Being — Thinking, Fast and Slow

The Day Reconstruction Method reveals that experienced well-being depends more on who you are with and what you are doing in the moment than on income or life circumstances above a threshold. The factors that people think will make them happier often don’t — and the ones they overlook often do.
Chapter 38: Thinking About Life — Thinking, Fast and Slow

Life satisfaction questions activate attention to whatever is currently salient — not a comprehensive survey of life quality. The focusing illusion: nothing is as important as it seems when you are thinking about it. Satisfaction measures reflect what people focus on, not how they actually live.
Conclusions — Thinking, Fast and Slow

Kahneman surveys what the heuristics-and-biases program has established, what remains uncertain, and what it means for improving the quality of judgment in organizations, policy, and personal life. The goal is not to eliminate System 1 but to know when not to trust it.
Appendix B: Choices, Values, and Frames — Thinking, Fast and Slow

A condensed version of Kahneman and Tversky’s 1984 American Psychologist paper — the canonical statement of framing effects and prospect theory applied to decision analysis, showing how equivalent descriptions produce systematically different choices.
Thinking, Fast and Slow — Book Summary — Thinking, Fast and Slow

Chapter-by-chapter synthesis of Thinking, Fast and Slow by Daniel Kahneman — the definitive account of the two systems that drive human judgment, and what their rivalry reveals about how we make decisions.

Tag: decision-making

Tag: decision-making

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