The Pratfall Effect: Why Owning Your Flaws Builds Stronger Brands
The strongest brand instinct is to hide what's awkward about your product. The fastest way to undermine your own brand is to follow that instinct.
Most founders, faced with a real shortcoming, reach for one of three responses. They downplay the flaw and hope nobody notices. They overcorrect with a campaign that leans hard on the opposite quality. They issue a corporate statement using the word "unprecedented" and the phrase "we apologise for any inconvenience caused." All three approaches make the brand smaller than it was before the flaw was even known.
The brands that get this right do something different. They name the flaw out loud, with confidence and personality, and let the customer respond to the honesty rather than the imperfection. The result is a stronger brand than the one that tried to look perfect.
There's a name for this. It's called the Pratfall Effect.
What the Pratfall Effect Is
The Pratfall Effect was identified by social psychologist Elliot Aronson at Harvard in 1966. Aronson recorded an actor answering a series of quiz questions. The actor got 92% of the answers right. In one version of the recording, the actor then spilled a cup of coffee over himself. In the other version, he didn't.
Aronson played the recordings to different groups of students and asked how likeable they found the contestant. The group that heard the coffee spillage rated the contestant as significantly more likeable than the group that didn't. The same competent person, plus one small visible flaw, was perceived as more attractive than the same competent person presented as flawless.
The principle has been replicated dozens of times since, and the implication for brands is straightforward. A brand that acknowledges a shortcoming is judged more favourably than one pretending the shortcoming doesn't exist. The flaw, if anything, makes the rest of the brand more believable.
There's one important condition. The Pratfall Effect only works for brands already perceived as competent. A weak brand admitting a weakness reinforces the weakness. A strong brand admitting a weakness deepens the trust. The mechanism rewards confidence first and honesty second.
Brand Examples That Show the Pratfall Effect Working
The case studies below are some of the most studied examples of the Pratfall Effect in branding.
Marmite has been running its "Love it or hate it" slogan since October 1996. The line was created by Richard Flintham and Andy McLeod at BMP DDB and was based on the simple observation that many people genuinely dislike the taste. The brand could have softened the flavour, repositioned around different use cases, or run campaigns featuring people enjoying it. Instead Unilever leaned into the divisiveness. The phrase "like Marmite" is now used in everyday British English to describe anything polarising. Behavioural scientist Richard Shotton, writing in Marketing Week in October 2024, called it the cleanest commercial application of the Pratfall Effect in modern advertising. By admitting that half the population hates the product, Marmite made the other half's love more believable.
KFC ran out of chicken in the UK in February 2018. A logistics failure left hundreds of stores closed for days. Most companies would have issued a defensive statement and a 20% discount. KFC ran a full-page newspaper ad with the chicken bucket relabelled "FCK" and an apology that opened with "A chicken restaurant without any chicken. It's not ideal." The campaign was credited with turning a potential brand disaster into one of the most-shared apologies in advertising history, and the agency Mother London won a clutch of industry awards for it. The flaw became one of the most human moments in the brand's recent history.
Guinness built its identity around the longest pour time in the bar. The two-part pour takes around 119 seconds, far longer than any competing beer. Rather than try to engineer a faster pour or distract from the wait, the brand turned the slowness into the slogan: "Good things come to those who wait." The wait became part of the experience the customer was paying for.
Domino's Pizza ran the Pizza Turnaround campaign in 2010, still studied as one of the bravest brand moves of the last fifteen years. The company aired television commercials reading out real customer complaints. "Worst pizza I ever had." "The crust tastes like cardboard." Domino's executives appeared on camera acknowledging the criticism and announcing a complete recipe change. The campaign was risky enough that internal teams reportedly tried to stop it from running. It worked. Sales grew, the stock price climbed, and the brand emerged with credibility it hadn't had before.
What these examples share is that the flaw was named with confidence rather than apologised for. The brands didn't grovel. They spoke about the imperfection the way a friend might mention a quirk in their personality, and the audience responded to the steadiness as much as the honesty.
Why Customers Don't Trust Perfection
The Pratfall Effect shows up in customer behaviour in ways founders rarely notice.
Northwestern University's Spiegel Research Center has been studying online reviews for over a decade and has found a consistent pattern. Purchase likelihood peaks for products rated between 4.2 and 4.5 stars, then drops as ratings approach 5.0. Updated research from the centre, published in late 2025, found that 46% of shoppers, and 53% of Gen Z shoppers, distrust products with perfect 5-star ratings. Three-quarters of consumers express concern about fake reviews when they see only positive feedback.
The implication is direct. A brand showing a small visible flaw is more believable than one that doesn't, and the marketplace rewards that believability with conversion. The cost of curating an image that looks too perfect is real, and it shows up at the point of purchase.
How to Use the Pratfall Effect Without Self-Sabotage
The Pratfall Effect is one of the most useful behavioural principles in branding and one of the easiest to misuse. Three things determine whether owning a flaw strengthens or weakens the brand.
The first is that the flaw must be small in relation to the strength. Marmite's flaw is that some people don't like the taste. The strength is that the people who do, love it. Guinness's flaw is the slow pour. The strength is the quality of the beer that arrives. KFC's flaw was a one-off operational failure. The strength is decades of a recognisable product. If the flaw is the central problem with the brand, naming it doesn't help. If the flaw is a small quirk in a brand otherwise strong, naming it deepens trust.
The second is that the tone must be confident, not apologetic. Apology language activates a different psychological response from acknowledgement language. "We're sorry, we let you down, we promise to do better" sounds defensive. "A chicken restaurant without any chicken. It's not ideal" sounds like honesty with a sense of humour. The brand's voice through the moment determines whether the customer leans in or pulls back.
The third is that the move only works once or twice for any given flaw. KFC ran "FCK" once, with timing and tone. They didn't run it again three months later. Marmite has held its slogan for nearly thirty years because the flaw it names is genuinely permanent. A brand making the same flaw visible in new ways stops looking confident and starts looking self-flagellating.
How Founders Can Apply the Pratfall Effect to Their Own Brand
Most founders have a flaw they're trying to hide. The price is higher than competitors. The product does fewer things. The team is smaller. The experience is rougher. The category is unfashionable. The instinct is to write copy that obscures the flaw and hopes the buyer doesn't ask.
The Pratfall Effect suggests the opposite move. Find the one specific shortcoming an honest customer would name first, and put it on the homepage in the brand's own voice. The fewer-features brand becomes the focused brand. The smaller-team brand becomes the hands-on brand. The pricier brand becomes the brand that doesn't compete on price. None of these is a lie. Each is a more honest description than the corporate copy that pretends the shortcoming doesn't exist.
The hard part is the confidence. Naming a flaw out loud requires the founder to actually believe in the strength behind it. Most founders skip this step because they aren't sure the strength is strong enough to justify the admission. The brands that get the Pratfall Effect right are the ones whose founders knew exactly what they were good at, and could name the flaw next to it without flinching.
Where to Start
Richard Shotton's The Choice Factory and The Illusion of Choice are the clearest written treatments of the Pratfall Effect and a dozen other behavioural principles for branding. Both are short and rely on real campaign examples rather than generic advice. The 2024 Marketing Week piece on Marmite, written by Shotton himself, is also worth reading as a single-case study.
For the experimental side, Aronson's original 1966 paper is freely available and easier to read than most academic psychology, although the cookie experiment by Adam Ferrier (replicated by Zenith Media) is the more directly applicable study for product brands.
If you're working on the brand for your own company and want a strategist who can help you find the flaw worth naming and the voice to name it in, that's part of what the studio does. Engagements typically run six to ten weeks, with the strategy and the writing held by one person from first call through delivery.
Chelsea Blake is the founder of Chelsea Blake Studio. She works with businesses building to scale, leading every engagement personally across brand strategy, identity, and tone of voice.
