The Cognitive Bias Handbook Part II

Curiosity Chronicle - Een podcast door Sahil Bloom

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Welcome to the 537 new members of the curiosity tribe who have joined us since Friday. Join the 27,544 others who are receiving high-signal, curiosity-inducing content every single week. Oh, and share this on Twitter to help grow the tribe!Today’s newsletter is brought to you by Morning Brew!Morning Brew is on my must-read list every single day. There's a reason over 3 million people start their day with Morning Brew — it’s a free daily email that delivers the latest news from Wall Street to Silicon Valley in an easy-to-digest format. Join millions of others and subscribe today!Today at a GlanceCognitive biases are systemic errors in thinking that negatively impact decision-making quality and outcomes.Combatting cognitive biases relies first and foremost on establishing a level of awareness of the biases, but each has its own specific combat strategies as well.Overview, examples, and combat tactics for common biases, including Loss Aversion, Endowment Effect, Ben Franklin Effect, Availability Bias, Survivorship Bias, Ikea Effect, Hindsight Bias, Plan Continuation Bias, Gambler’s Fallacy, and Curse of Knowledge.The Cognitive Bias Handbook - Part IICognitive biases are systemic errors in thinking that negatively impact decision-making quality and outcomes. I recently shared a Twitter thread covering the basics of 20 cognitive biases - but it was admittedly surface-level (280 characters only allows for so much depth and nuance on a topic!).Last week, I went deeper, with Part I of The Cognitive Bias Handbook, covering 10 common cognitive biases, including examples and ways to combat each. Today, I will cover the remaining 10. As a reminder, this two-part newsletter series was split as follows:Part I (last week) covered Fundamental Attribution Error, Bandwagon Effect, Egocentric Bias, Naïve Realism, Baader-Meinhof Phenomenon, Pygmalion Effect, Confirmation Bias, Backfire Effect, Anchoring, and Dunning-Kruger Effect.Part II (today) covers Loss Aversion, Endowment Effect, Ben Franklin Effect, Availability Bias, Survivorship Bias, Ikea Effect, Hindsight Bias, Plan Continuation Bias, Gambler’s Fallacy, and Curse of Knowledge.This handbook is designed to be a resource you can save and come back to whenever you need a refresher. Given the volume and importance of the information, I am considering working with an illustrator to convert it into a physical/digital book that you can reference as well. Stay tuned!Without further ado, let’s dive into Part II…Loss AversionWhat is it?The pain of losing something is more powerful than the pleasure of winning it.Loss aversion was first identified by famed behavioral scientists Amos Tversky and Daniel Kahneman, who found that humans had a tendency to prefer avoiding losses over acquiring equivalent gains. Accordingly, people were typically willing to take actions to avoid losses that they wouldn’t have taken to seek gains.Economists had previously assumed humans were rational actors - that $100 in losses would drive the same amount of pain as $100 in gains would create pleasure. Wrong. Humans are enigmatic creatures!ExamplesInvestors - professional and amateur alike - exhibit loss aversion. The pain and fear of realizing a loss often leads investors to hold onto losing positions much longer than they should.Gamblers who are in the red for a given night often risk much more to try to get back into the black (above breakeven) than they should.How do you combat it?Loss aversion is hardwired into our primate brains, but as always, awareness is the first step to fighting back against its influence.Avoid emotional connection to your possessions - whether they are investments, material items, or money. Attempt to distance your emotions from the decision-making process where possible.Ask questions:Am I being objective and rational in this decision?Am I letting my emotions influence my decision?Am I too connected emotionally to make a rational decision?If you are too connected to a given decision, you may need to outsource it to an objective third-party.The Endowment EffectWhat is it?A close relative of loss aversion, the endowment effect (sometimes called “divestiture aversion”) says that once we have something, we don't want to give it up.Specifically, we demand more to give up an object than we would be willing to pay to acquire it. In slightly more scientific terms, willingness to pay (“WTP”) to acquire an object is typically lower than willingness to accept (“WTA”) to give up an object.ExamplesIn a classic experiment performed by Richard Thaler, two groups of people were placed in a room and given either (a) a fancy pen or (b) a coffee mug. They were then asked if they would be willing to trade their item for the alternate item. Both groups expressed an unwillingness to trade their endowed item for the alternate item, even though they had similar objective values.In another study of NCAA Final Four ticket-holders, it was found that their WTA was ~10x+ higher than their WTP for th...

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