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1. The Fallacy of Supply and Demand
2. The Cost of Zero Cost
3. The Influence of Social Norms
4. The Power of Free!
5. The Cost of Ownership
6. The Effect of Expectations
7. The High Price of Ownership
8. Keeping Doors Open
9. The Problem of Procrastination
10. The Power of Price
11. The Context of Our Decisions
12. The Influence of Arousal
13. The Problem of Relativity
14. The Power of Placebo
15. The Effect of Emotions
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247 reads
Ariely demonstrates how supply and demand aren’t as independent as they seem. Initial prices often anchor our perception, making us think we’re making rational choices based on value when we’re actually influenced by arbitrary starting points.
“The first price we encounter often sets our expectations for future prices.”
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248 reads
People’s behavior changes dramatically when something is free. The zero price effect makes us overvalue free items, even when the cost of acquiring them (like time or effort) is significant.
“Free is an emotional hot button—a source of irrational excitement.”
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220 reads
Social norms guide our behavior more than market norms. We tend to do things for free or lower pay if they are framed within social contexts rather than market transactions.
“Social norms make us more willing to engage and contribute than monetary compensation.”
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199 reads
Free items hold a special allure that distorts our judgment. The promise of getting something for nothing can drive us to make decisions that aren’t in our best interest.
“When something is free, we forget the downside and overvalue the upside.”
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187 reads
Ownership significantly affects how we value items. Once we own something, we irrationally overvalue it, making it difficult to let go or sell at a fair price.
“Ownership changes our perception, making us overestimate the item’s worth.”
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Expectations shape our experiences and perceptions. Our preconceived notions can alter the way we perceive reality, often leading to biased judgments.
“Expectations create a lens through which we view and experience the world.”
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160 reads
The endowment effect makes us value items we own much higher than the same items owned by others, leading to irrational decision-making in buying, selling, and even everyday choices.
“We overvalue what we have simply because we own it.”
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143 reads
We tend to irrationally keep our options open, fearing loss more than valuing the gain. This behavior leads to indecision and less satisfaction with our choices.
“Keeping too many doors open can make us spread our resources too thin.”
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Procrastination and self-control issues are common, influenced by immediate temptations that outweigh long-term goals. Structuring deadlines and incentives can help combat this tendency.
“We procrastinate because immediate rewards often outweigh future benefits.”
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143 reads
Price can influence our perception of quality and effectiveness. Higher prices often lead us to believe that the product or service is better, regardless of its actual quality.
“We equate higher prices with higher quality, even when evidence suggests otherwise.”
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Context plays a crucial role in decision-making. We compare options relative to others rather than evaluating them on their own merits, often leading to irrational choices.
“Our decisions are shaped by the context in which choices are presented.”
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Emotional and physiological states, like arousal, significantly impact our decision-making, often leading us to make choices we wouldn’t consider when calm.
“Arousal can change our preferences and lead to irrational decisions.”
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We evaluate options relative to others available at the moment. This relativity traps us into making decisions based on comparisons rather than absolute value.
“Relativity guides our decisions more than objective assessment.”
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124 reads
Placebo effects demonstrate the power of expectations. Believing a treatment will work can lead to real physiological changes, underscoring the influence of perception.
“The placebo effect shows how our minds can influence our physical reality.”
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119 reads
Emotions profoundly impact our decisions, often more than we realize. They can lead to irrational actions that defy logical analysis, emphasizing the need to understand and manage emotional influences.
“Emotions are powerful drivers of our choices, often leading us astray.”
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115 reads
Supply and Demand Fallacy: Initial prices set expectations, distorting our perception of value.
2. Zero Cost’s Allure: Free items trigger irrational excitement, leading to poor decisions.
3. Social Norms Influence: Social contexts make us more willing to engage than monetary incentives.
4. Free’s Power: Free items distort judgment, making us overvalue their benefits.
5. Ownership Costs: Ownership causes us to overvalue items, affecting our decisions.
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105 reads
Expectations’ Effect: Preconceived notions shape our experiences and judgments.
7. High Ownership Price: The endowment effect leads to irrational valuation of owned items.
8. Keeping Options Open: Fear of loss drives us to keep too many options, causing indecision.
9. Procrastination Problem: Immediate rewards outweigh long-term goals, leading to delay.
10. Price Influence: Higher prices are perceived as better quality, regardless of actual value.
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91 reads
Decision Context: Choices are influenced by relative context, not absolute merits.
12. Arousal Influence: Emotional states impact decisions, leading to irrational choices.
13. Relativity Problem: Decisions are guided by comparisons rather than objective value.
14. Placebo Power: Expectations can lead to real physiological changes through belief.
15. Emotional Effects: Emotions drive decisions, often overriding logical analysis.
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96 reads
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CURATOR'S NOTE
Explore the hidden forces shaping our decisions in Dan Ariely's *Predictably Irrational*.
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Curious about different takes? Check out our Predictably Irrational Summary book page to explore multiple unique summaries written by Deepstash users.
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