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Free micro-learning on behavioral economics: loss aversion, anchoring bias, availability heuristic, and the psychology of money and decisions.
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In the 1970s, psychologists Daniel Kahneman and Amos Tversky discovered something that upended classical economics: losses hurt approximately twice as much as equivalent gains feel good.
A study gave participants a wheel of fortune that landed on either 10 or 65. Then they asked: "What percentage of African countries are in the United Nations?" The people who saw 65 guessed 45%. The people who saw 10 guessed 25%. A completely irrelevant random number had contaminated their estimates by 20 percentage points.