Why Everything You Own Feels Worth More Than It Is

You would not sell your old mug for $3. But you also would not pay $3 for the exact same mug — if it were not already yours. In this video, we explore the endowment effect: the bias that makes owners demand far more to give something up than buyers will pay to get it, and the famous mug experiment that proved it in a classroom. 🍷 The wine collector who refused to sell his bottles at prices he also refused to pay (Thaler, 1980) ☕ The Cornell mug experiment: owners asked a median of $7.12, buyers offered $2.87 — and neutral choosers valued the same mug at $3.12 (Kahneman, Knetsch & Thaler, 1990) ⚖️ Loss aversion: why handing something over registers as a loss, and losses shout while gains whisper 🃏 The honest caveat: ownership itself may drive the effect — and seasoned traders barely show it at all (Morewedge et al., 2009; List, 2003) What is one thing YOU own that nobody could buy from you at a fair price? Tell us in the comments 👇 🔔 Subscribe to Why People Think for a new research-based psychology video every week. 0:00 The Mug You Wouldn't Sell for $3 0:44 The Endowment Effect 1:18 The Wine He Wouldn't Sell — or Buy 1:54 The Cornell Mug Experiment 2:32 Owners $7.12, Buyers $2.87 3:13 Loss Aversion 3:52 Your House, Your Car, Your Closet 4:33 The Honest Caveat 5:30 Borrow the Chooser's Eyes 6:05 What Nobody Could Buy From You References: • Thaler, R. (1980). Toward a positive theory of consumer choice. Journal of Economic Behavior & Organization, 1(1), 39–60. • Kahneman, D., Knetsch, J. L., & Thaler, R. H. (1990). Experimental tests of the endowment effect and the Coase theorem. Journal of Political Economy, 98(6), 1325–1348. • Kahneman, D., Knetsch, J. L., & Thaler, R. H. (1991). Anomalies: The endowment effect, loss aversion, and status quo bias. Journal of Economic Perspectives, 5(1), 193–206. • Morewedge, C. K., Shu, L. L., Gilbert, D. T., & Wilson, T. D. (2009). Bad riddance or good rubbish? Ownership and not loss aversion causes the endowment effect. Journal of Experimental Social Psychology, 45(4), 947–951. • List, J. A. (2003). Does market experience eliminate market anomalies? Quarterly Journal of Economics, 118(1), 41–71. This video is educational and entertainment content based on published psychology research. It is not medical advice and does not diagnose or treat any condition.