Predictably Irrational · Dan Ariely

The IKEA effect examples

Curated by · reviewed 2026-06-01

The IKEA effect is how we overvalue things we partly built ourselves — the labour we invest makes the result feel worth more than it objectively is. Examples:

What is the ikea effect? Read the full idea →

5 examples of the ikea effect

  1. The furniture you assembled

    You love the slightly wobbly shelf more than a sturdier store-bought one, because you built it.

  2. Cake mixes that need an egg

    Sales rose when mixes required adding an egg — the small effort made it feel 'yours.'

  3. Your own plan

    A strategy you helped create feels obviously right; an equally good one handed to you doesn't.

  4. Home cooking

    The meal you made tastes better to you for the effort, regardless of the result.

  5. Hard-to-kill projects

    Teams overrate the thing they slaved over, which makes it painful to scrap (see also sunk cost).

How to spot it in yourself

You'll forget most of this by next week.

That's just how memory works. Lock the ikea effect in with a 5-minute active-recall session — spaced repetition, no signup.

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