£0.00 (0 items)

You have not selected any courses

The Endowment Effect

Posted by vince
Published on 13 September 2023

The Endowment Effect

The endowment effect is a cognitive bias that refers to the tendency for people to place a higher value on things they own than on similar things they do not own. This bias was first identified by Richard Thaler in 1980.

The endowment effect is thought to be caused by several factors, including the following:

  • The mere ownership effect is the tendency to value something more highly simply because we own it. This is because ownership gives us a sense of control over the object.
  • The loss aversion effect is the tendency to prefer avoiding losses to acquiring equivalent gains. This is because losses are perceived as more painful than gains.
  • The sunk cost fallacy is the tendency to continue investing in something, even when it is clear that the investment will not be profitable. This is because we are reluctant to admit we have made a mistake.

The endowment effect can have several consequences. It can lead people to overvalue their possessions and be reluctant to sell them, even if they are not using them or if they could get a better price elsewhere. It can also lead to people making suboptimal decisions, such as refusing to trade a good they own for a better good they do not own.

Many things can be done to avoid the endowment effect. One is to be aware of the bias and to resist it consciously. Another is to gather as much information as possible about the object so that you can make an informed decision about its value. Finally, you can try to imagine yourself not owning the object and think about how much you would be willing to pay for it.

Here are some examples of the endowment effect:

  • People are likelier to reject a trade offer that would give them a $50 profit if it means giving up an object they own.
  • People are likelier to keep a car in poor condition than to sell it and buy a better one.
  • People are likelier to be willing to pay a higher price for a house that they are already living in than for a similar house that they do not own.

The endowment effect is a powerful cognitive bias that can significantly impact our decision-making. By being aware and avoiding this bias, we can make better decisions about what we own and buy.

There are many Cognitive Biases, many more than most people realise. If you want to think your way out of a mind trap, you must first realize you're already trapped. 

If you want to enhance your professional skill set or help an employee on the road to success, enrol on our 5-day Discovery Public Speaking Course. The course helps you to polish your skills so you can present comfortably to the board and other industry professionals. Book a place on this 5-day course for just £1750 + VAT. It's a life-changing event. 

Overcoming your fear of public speaking,
sign up for one of our courses today!

See our courses


  • "An exceptionally useful day's training, delivered in a positive and personanable manner, very enjoyable and significant food for thought. Thank You."

    Diane Wilson - DCI Notts Police
  • "The anxiety is gone - now that I understand it. Not only can I make a presentation - I feel I have so much to give now. It's quite a transformation."

    John Eden
  • "Since attending the course, I feel like a completely different person; more confident, relaxed and easy going. I gave a speech at work last week and it went so so well."

    Ben Harding
hm treasury
deutsche bank
  Contact us