The exact behavioural tactic that boosted Lushโ€™s sales up 24% | Nudge Newsletter


Input Bias

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Does the ๐ž๐Ÿ๐Ÿ๐จ๐ซ๐ญ put into a shop display ๐˜ข๐˜ค๐˜ต๐˜ถ๐˜ข๐˜ญ๐˜ญ๐˜บ influence sales?

That's what Moralesยน set out to answer in 2005.

Participants were shown round the same store, except half saw the shelves ๐ง๐ž๐š๐ญ๐ฅ๐ฒ ๐ฌ๐ญ๐š๐œ๐ค๐ž๐ ๐ฐ๐ข๐ญ๐ก ๐ก๐ข๐ ๐ก-๐ž๐Ÿ๐Ÿ๐จ๐ซ๐ญ ๐๐ข๐ฌ๐ฉ๐ฅ๐š๐ฒ๐ฌ.

The other participants saw the same products, but with a ๐ฅ๐จ๐ฐ-๐ž๐Ÿ๐Ÿ๐จ๐ซ๐ญ ๐๐ข๐ฌ๐ฉ๐ฅ๐š๐ฒ.

The results are striking.

Those who saw the high-effort display were willing to pay 24.4% ๐’Ž๐’๐’“๐’†.

After seeing a store display like Boots, customers were willing to pay $8.22.

But those who saw a display like Lush's were willing to pay $10.51 for the ๐’”๐’‚๐’Ž๐’† ๐’‘๐’“๐’๐’…๐’–๐’„๐’•๐’”.

The cost of creating impressive displays is (for most stores) no more than 1% of total revenue. Yet this fairly insignificant change could boost revenue by 24%.

Next, a different group were asked if they'd visit a store that created a high effort display like this Lego example (on the right).

Turns out, participants were 20% more likely to visit if the store had created a high-effort display.

Finally, a group of homebuyers who visited an estate agency were told one of two things.

  1. That the estate agent had spent 9 hours handpicking the listings
  2. That the estate agent had spent 1 hour finding the listings using a computer

The list of homes was the same in both scenarios.

Buyers rated the agent more positively (higher on a 100-point scale) and felt more gratitude (3.90 vs 2.70) when the estate agent said they spent 9 hours handpicking the listings.

The takeaway is simple.

The research shows that consumers reward firms for extra effort.

So, don't hide your effort, showcase it.


This is known as the input bias.

Inside the Nudge Vaults you'll find 18 more insights specifically about this bias.

I've spent six years researching insights for the Vaults and six months putting it all together*.

Preview your first 50 insights for free โ†’

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Hope you enjoyed today's newsletter โ€” Phillโ€‹

P.S. All of these examples come from this wonderful paper by Andrea Morales.

*Yes, that was a blatant use of the input bias; good spot.

ยนMorales, A. C. (2005). Giving firms an "E" for effort: Consumer responses to high-effort firms. Journal of Consumer Research, 31(4), 806โ€“812. in our minds.

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As a behavioural science practitioner, I believe in the peak-end rule.

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