











No, it's not just you — we all tend to overestimate the value of our possessions, and there's a name for it.
Istam voluptatem, inquit, Epicurus ignorat? Et certamen honestum et disputatio splendida! omnis est enim de virtutis dignitate contentio. Sed ad bona praeterita redeamus. Causa autem fuit huc veniendi ut quosdam hinc libros promerem.
Ita relinquet duas, de quibus etiam atque etiam consideret. Itaque vides, quo modo loquantur, nova verba fingunt, deserunt usitata. Cur id non ita fit? Aliter enim explicari, quod quaeritur, non potest. Quod si ita se habeat, non possit beatam praestare vitam sapientia. Tria genera bonorum;




- Be mindful of the endowment heuristic in sales conversations.
When purchasing something, be aware ...
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Illud dico, ea, quae dicat, praeclare inter se cohaerere. Non est enim vitium in oratione solum, sed etiam in moribus. Sed nonne merninisti licere mihi ista probare, quae sunt a te dicta? Aliter homines, aliter philosophos loqui putas oportere?
Duo Reges: constructio interrete. Non potes, nisi retexueris illa. Et ille ridens: Video, inquit, quid agas; Se dicere inter honestum et turpe nimium quantum, nescio quid inmensum, inter ceteras res nihil omnino interesse. Falli igitur possumus. Et ille ridens: Video, inquit, quid agas; Hoc sic expositum dissimile est superiori. Quod autem ratione actum est, id officium appellamus.
Non est enim vitium in oratione solum, sed etiam in moribus. Iam quae corporis sunt, ea nec auctoritatem cum animi partibus, comparandam et cognitionem habent faciliorem. Hanc ergo intuens debet institutum illud quasi signum absolvere. Sed nimis multa. Non est ista, inquam, Piso, magna dissensio. Aut unde est hoc contritum vetustate proverbium: quicum in tenebris?
There have been critics of the Endowment Heuristic, with some claiming it does not exist or at least is not as apparent in real life as in fixed experiments. For example, some argue that the results from the mug experiment (see the ‘In Practice’ section) was more due to artificial scarcity.
Mugs.
This 1991 paper by Daniel Kahneman, Jack Knetcsch and Richard Thaler describes the classic example of the endowment heuristic involving mugs. In it, participants were given a mug and then given the chance to trade it. They found that the value attributed to owned mugs was twice as high as they were actually willing to pay for such a mug that they did not own.
The endowment heuristic is part of behavioural economics, stemming from the fast and slow thinking mental model and relating closely to loss aversion.
Use the following examples of connected and complementary models to weave availability heuristic into your broader latticework of mental models. Alternatively, discover your own connections by exploring the category list above.
Connected models:
- Fast and slow thinking: providing broader context to the endowment effect.
- Loss aversion and opportunity cost: a closely linked heuristic and bias.
- Lock in effect: and challenge of customer loyalty.
Complementary models:
- Design thinking: consider strategies to co-design and increase ownership of initiatives.
- Lean startup: iterating with minimum viable products, allowing audience groups to access and own quickly and cheaply.
Aristotle noted the tendency towards the Endowment Effect in Ancient Greece, when he explained: “For most things are differently valued by those who have them and by those who wish to get them: what belongs to us, and what we give away, always seems very precious to us.”
However, the term itself was first coined by the behavioural economist Richard Thaler in his 1980 paper entitled ‘Toward a Positive Theory of Consumer Choice.’

Oops, That’s Members’ Only!
Fortunately, it only costs US$5/month to Join ModelThinkers and access everything so that you can rapidly discover, learn, and apply the world’s most powerful ideas.
ModelThinkers membership at a glance:






“Yeah, we hate pop ups too. But we wanted to let you know that, with ModelThinkers, we’re making it easier for you to adapt, innovate and create value. We hope you’ll join us and the growing community of ModelThinkers today.”