BIAS OF THE WEEK

Endowment Effect

In an experiment there were 2 groups:
Sellers and Buyers

  • Sellers were given a coffee mug then indicating a price to sell. The median was $7.12
  • Buyers were asked how much they would pay for the cup. The average purchase price was $2.87

We tend to place more value on things that we own more than an equivalent item that does not belong to us.

See the full study here :

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.

Want to know more about biases?

Bias Blind Spot

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Pratfall Effect

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Telescoping Effect

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Scarcity effect

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