IKEA effect
People value things more when they helped create them.
Where it applies
Two of the eight page areas.
How to use it
Four ways to put it to work.
- Offer product and bundle builders, personalisation and configurators that give shoppers real choices.
- Let shoppers reach a finished result within a few steps.
- Show the completed design back and save it.
- Keep the builder short and hard to get wrong.
What the research found
Building something raises its value, but only if people finish it.
The effect vanished when people did not finish or took the item apart.
A meta-analysis of 55 studies (5,454 people) found a moderate effect of self-assembly on valuation (d = 0.57), holding for customisable and tangible products alike. The original found the effect vanished when people did not finish or took the item apart. Franke and colleagues found higher willingness to pay for self-designed products.
Key research
Four sources, each checked.
Last reviewed
Norton, Mochon & Ariely (2012) The IKEA effect: When labor leads to love J. Consumer Psychology Read the source Pelled, Demetriades & Walter (2026)Meta-analysis Labor Leads to Love, Right? A Meta-Analysis of the IKEA Effect Psychology & Marketing Read the source Franke, Schreier & Kaiser (2010) The "I Designed It Myself" Effect in Mass Customization Management Science Read the source Sarstedt, Neubert & Barth (2017)Replication The IKEA Effect. A Conceptual Replication J. Marketing Behavior Read the source
Before you use it · UK law
Only goods made to the shopper's specification or clearly personalised fall outside the 14-day cancellation right (Consumer Contracts Regulations 2013, regulation 28). A bundle chosen from standard options will normally keep it, so state clearly which applies.
This is simply a pointer to check, not legal advice. Seek legal advice before you put this principle into action.