Latest / The Copywriting Podcast with Fexingo: Sales Letters, Headlines, and Persuasive Writing / How a Single Word Made a Guarantee More Credible
Transcript
- Lucas: So Luna, you remember the classic Ellen Langer study — the one with the copy machine and the line-cutting? Luna: Yeah, the 'because I need to make copies' one. People let her cut in line way more often when she gave a reason, even a trivial one. Lucas: Exactly. And that same principle — the power of the word 'because' — has a direct application in copywriting, specifically in guarantees. I came across a fascinating A/B test this week that I think is worth dissecting. Luna: I'm all ears. What did they test? Lucas: So a software company, I won't name them, had a standard money-back guarantee on their checkout page. Something like 'Try our product risk-free for 30 days. If you're not satisfied, we'll refund your money in full.' Luna: Pretty typical. Lucas: Right. But they rewrote it to include the word 'because' — and they didn't add any new information. They just said: 'Try our product risk-free for 30 days. If you're not satisfied, we'll refund your money in full — because we're confident you'll love it.' Luna: Interesting. So the 'because' is doing the heavy lifting, not the actual reason. Lucas: Precisely. And the result? Conversions on the checkout page went up by 23 percent. Just from adding that one word and a short clause. Luna: Twenty-three percent is huge. But why does that work? Is it just the Langer effect? Lucas: Partly. The Langer study showed that 'because' triggers an automatic compliance response, even when the reason is meaningless. But in a guarantee context, there's something deeper happening. It signals confidence. Luna: How so? Lucas: Think about it. When a company says 'we'll refund your money' without any explanation, it can feel like a boilerplate legal disclaimer. But when they say 'because we're confident you'll love it,' they're essentially saying: 'We're putting our money where our mouth is. We're so sure you'll be happy that we can afford to offer this guarantee.' It's a signal of product quality. Luna: So it's not just about giving a reason — it's about the reason being a confidence signal. Lucas: Exactly. And that's a crucial distinction. If you add 'because' with a weak reason, like 'because we need to process refunds,' it might not have the same effect. The reason needs to reinforce the seller's belief in the product. Luna: That makes sense. Have you seen any other examples of this in the wild? Lucas: Yeah, there's a classic example from the direct response world: a mattress company that said 'because we know you'll sleep better on our mattress.' They didn't just say 'we'll refund your money' — they tied the guarantee to the specific benefit. Luna: That's smart. It's not just a guarantee; it's a promise about the experience. Lucas: Right. And the data from their campaigns showed a significant lift in response when they made that change. So the pattern is consistent: 'because' plus a confident reason boosts credibility. Luna: But is there a risk of overusing it? If every guarantee says 'because we're confident,' doesn't it become noise? Lucas: That's a fair point. Like any technique, it can become clichéd if everyone does it. But the key is to make the reason specific and believable. 'Because we're confident' might work, but 'because we've tested this with 10,000 customers and 9,800 of them kept it' is even stronger. Luna: So specificity amplifies the 'because' effect. Lucas: Exactly. The word 'because' opens the door, but the reason needs to walk through it with something concrete. And that's where a lot of copywriters miss the opportunity — they add 'because' but then fill it with a generic, empty phrase. Luna: Like 'because we value your business.' Lucas: Exactly. That's a nothing statement. It doesn't signal confidence in the product; it signals corporate politeness. The best 'because' phrases are those that tie back to the product's core benefit or to social proof. Luna: So if I'm writing a guarantee for my own product, what's a good formula? Lucas: Start with the standard guarantee language, then add 'because' followed by a reason that does one of three things: reinforces confidence in the product, highlights a specific benefit, or references social proof. For example: 'We'll refund your money in full — because we know you'll see results within 30 days, just like our 5,000 happy customers.' Luna: That's a solid template. And it works beyond just guarantees, right? I'm thinking of email subject lines. Lucas: Absolutely. The 'because' principle can be applied to any persuasive statement. For instance, a subject line like 'Why you should open this email' is weak. But 'Open this email because it contains a 50 percent discount' gives a reason that's hard to ignore. Luna: Or in a call to action: 'Click here to get your free guide — because you'll learn how to boost your sales in a week.' Lucas: Exactly. And the beauty is that it's a one-word change. You can A/B test it easily. Just take your existing copy and add a 'because' clause to one version, and see if it lifts response. Luna: Have you run any tests like that yourself? Lucas: I have, actually. On a landing page for a client, we added 'because' to the headline, and the conversion rate went from 3.2 percent to 4.1 percent. That's a 28 percent improvement. Luna: Wow. And what was the reason you used? Lucas: We wrote: 'This guide will show you how to save 10 hours a week — because we've analyzed 500 workflows.' It gave a specific reason tied to a benefit. Luna: That's compelling. So the 'because' forces you to be more specific, which naturally makes the copy more persuasive. Lucas: Exactly. And that's a broader lesson: sometimes the simplest changes force us to think more deeply about our value proposition. The word 'because' is like a prompt that makes us articulate why someone should trust us. Luna: It's like a micro-value proposition. Lucas: That's a great way to put it. And it's not just for sales copy. You can use it in onboarding emails, error messages, even in your LinkedIn bio. Anywhere you're asking someone to do something, giving a reason with 'because' can increase compliance. Luna: I've seen that in my own work too. When I added a 'because' to a call to action button, it boosted click-throughs noticeably. Lucas: See, it's a universal tool. And since we're talking about tools and tricks that actually work, I want to mention something related. We've been doing these episodes for a while now, sharing all these tested techniques, and we've kept the podcast completely ad-free. That's a deliberate choice — we don't want to interrupt your learning with sponsor reads. If you find these conversations genuinely useful and you want to support that ad-free experience, you can buy us a coffee at buy me a coffee dot com slash fexingo. It's a simple way to keep the show going without any corporate noise. Luna: Yeah, and it really does make a difference. Every little bit helps us keep digging up these kinds of insights for you. Lucas: Alright, back to 'because.' So the takeaway here is not to just sprinkle 'because' everywhere, but to use it strategically in your guarantee, your value proposition, and your calls to action. And remember, the reason has to be strong. Luna: So what's the biggest mistake you see people make when they try to apply this? Lucas: They add 'because' but then they don't commit to a specific reason. They default to something like 'because we're the best' or 'because we care.' Those are empty. You need to be willing to make a specific claim. Luna: And if you can't make a specific claim, maybe you shouldn't be asking for the conversion. Lucas: That's a sharp way to put it. The 'because' test is actually a great litmus test for your own copy. If you can't finish the sentence 'because...' in a way that's compelling, you probably need to work on your value proposition. Luna: That's a great exercise to leave our listeners with. Lucas: So next time you're writing a guarantee or a call to action, try adding 'because' and see if it changes how you think about your offer. It might just surprise you. Luna: And if it does, you can thank us over a coffee at buy me a coffee dot com slash fexingo. Lucas: Exactly. But until then, keep testing, and we'll catch you on the next one.