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Sales psychology for marketing, 13 of 14

The pratfall effect

Also called Honest flaws

Once you've shown you're good, an honest flaw makes the rest easier to believe.

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The idea

Someone who is clearly competent becomes more likeable after showing a small, honest flaw. In marketing, admitting a real trade-off in an ad, a founder video or a sales call can make your other claims easier to trust.

Illustration of The pratfall effect

Why it works

In a 1966 study by Elliot Aronson and colleagues, listeners rated a highly capable quiz contestant as more likeable after he clumsily spilled coffee. The same blunder made an average contestant less likeable, so a small flaw only helps once competence is already clear.

Research: Aronson and colleagues 1966

Where to use it

Founder videos

Show the job that went sideways and how you fixed it, or the thing you got wrong early on. Pair the flaw with proof you're good at the work.

I underquoted my first big job badly. Here's the pricing rule I've used ever since.
Meta ads

Lead with a real trade-off your best customers won't mind: a wait list, a higher price, a narrow focus. It filters out poor fits and makes the rest of the ad easier to believe.

We aren't the cheapest, and there's usually a wait. Here's why people still book.
Landing pages

Add a short 'who this isn't for' section. Turning some buyers away tells the right ones you know exactly who you help.

This isn't for you if you need it done by Friday or want the cheapest option.
Sales calls

Name the downside of your offer before they find it. It shows you aren't hiding anything, and it makes your recommendation sound honest.

The honest downside: this takes longer than a quick fix. Here's why it's worth the wait.
Google Business Profile

Reply to a critical review calmly, own the part that was your fault, and say what changed. Handled well, it makes the good reviews around it easier to believe.

You're right, we missed your callback. We've changed how we log calls so it doesn't happen again.

Steal these

Fill in the brackets and use them in your next post, ad or email.

  • We aren't [the cheapest or fastest]. Here's why [customers] still choose us.
  • This isn't for you if [honest disqualifier].
  • The honest downside of [offer]: [real trade-off]. Here's why it's worth it.
  • I got [thing] wrong for [time]. Here's what I do now.
  • You're right, we [mistake]. Here's what we changed.

Before and after

Before

The best, most reliable service in town, guaranteed!

After

We aren't the cheapest, and there's usually a short wait. That's the cost of doing every job properly.

Nobody believes the first line, because everyone says it. The second admits a real trade-off, which makes the promise after it easier to believe. It only works if your reviews and your work back it up.

Where it backfires

Admitting a flaw in the core job. 'We're sometimes booked out' builds trust. 'Our work sometimes needs redoing' just loses the sale. And it only helps once people can already see you're good.

Pairs well with

The bandwagon effectPut the honest flaw next to real reviews, so people can see you're good before they hear the trade-off.

Common questions

Will admitting a weakness lose me customers?
It can lose the wrong ones, which is often a good thing. For people who are a good fit, a real trade-off stated plainly makes the rest of your pitch easier to believe.
What kind of flaw is safe to share?
A real limitation that comes from doing the job well: a wait list, a higher price, a narrow focus, or an honest mistake you fixed. Never a flaw in the thing people are paying you for.

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