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Mystery Effect

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I submit a gas and electricity reading every month.

Not because I'm diligent or disciplined.

But because my supplier (Octopus Energy) nudges me to do so.

Every time I leave a gas reading, they let me spin a wheel to win a potential reward.

I've shared this before, but I haven't shared much evidence as to why it works.

So, take a look at these images from a 2022 study¹.

Which would you pick?

Researchers Buchel and Li experimented with two different ice cream stores:

1️⃣ Where customers could pick a bestseller (chocolate, strawberry or salted caramel)

2️⃣ Customers will be randomly chosen one of 10 flavours (could be chocolate, lemon, coconut etc.)

In pre-testing, 80% of people said chocolate, strawberry or salted caramel was their favourite flavour, so you'd expect that option to be preferred.

It wasn't.

𝐓𝐡𝐞 𝐦𝐚𝐣𝐨𝐫𝐢𝐭𝐲 𝐩𝐢𝐜𝐤𝐞𝐝 𝐭𝐡𝐞 𝐦𝐲𝐬𝐭𝐞𝐫𝐲 𝐬𝐮𝐫𝐩𝐫𝐢𝐬𝐞 over the firm choice.

We're drawn towards mystery and surprise.

And on a recent episode of Nudge, I covered how HelloFresh used this principle to grow. Listen here.


Inside the Nudge Vaults you'll find 499 insights, backed by peer-reviewed papers.

Specifically, there are four insights on the curiosity gap (the principle used above).

The Vaults highlights insights you can use to improve your marketing.

You can even preview your first 50 insights for free

Phill

¹Buechel, E., & Li, R. (2022). Mysterious consumption: Preference for horizontal (vs. vertical) uncertainty and the role of surprise. Journal of Consumer Research, 49(6), 987–1004..

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

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