Endowment Effect
Overvaluing things simply because we own them.
Also known as: Ownership bias, Possession effect
Category: Cognitive Biases
Tags: cognitive-biases, psychology, decision-making
Explanation
The Endowment Effect describes our tendency to value things more highly simply because we own them. Studies show people demand more to give up an item than they would pay to acquire it. This affects everything from selling houses (overpricing) to keeping unused items (hoarding). In PKM, endowment effect can make us reluctant to delete or refactor notes we've created, even when they're outdated or redundant. Recognizing this bias helps make more rational decisions about what to keep.
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