Benefit-Priming Questions (Good Friction)
Add a step to your signup flow — a question that makes users think about the benefit — and conversion goes up.
- Difficulty
- Easy
- Time to result
- ~weeks to results
- Steps
- 4
- Confidence
- 92%
The universal law is that reducing friction increases conversion. This is the documented exception: adding a question to a signup flow can raise conversion, because a question inserts an idea into the user's head. Ask them to actively engage with the benefit you offer and their motivation rises enough to carry them over the friction still ahead.
Origin
Kristen Berman / Irrational Labs, tested across client flows (Titlecare, a bill-pay app) and corroborated by publicly-reported results at Trunk Club and Apartment List. Berman wrote it up in a widely-read guest post for Lenny's Newsletter.
Core principles
- 01A question inserts an idea into someone's head — Berman demonstrates it live by asking Lenny 'have I ever told you about my mother?'
- 02You don't need an answer to the question; you need the thought the question triggers.
- 03Passive benefit statements (the onboarding carousel) are weaker than active engagement with the benefit.
- 04Easy questions only. Cognitive load kills the effect.
How to run it
- 1
Identify the benefit users under-appreciate
Work out what your product actually offers that a new user hasn't internalized — inventory depth, speed, breadth of options.
- 2
Convert the benefit statement into a question
Replace the passive carousel slide with a question that forces the user to imagine the benefit in their own life. Apartment List asks what kind of apartment you want — studio, one-bed, five-bed, patio, basement, view — which simultaneously communicates how much supply they have.
Pro tip Best version: combine the benefit prime with a genuine setting. A bill-pay app asking 'do you want us to pay your bills immediately, weekly, or monthly?' implicitly tells you it can pay immediately AND configures the product.
- 3
Make it a dropdown or multiple choice
Constrain the answer format. Drop-downs and multiple choice are where this technique works. Never ship an open-text field for this.
Watch out Berman's team shipped an open-text question the team believed was easy; conversion dropped 40% page-over-page. Most open-text questions are not easy questions, whatever the team thinks.
- 4
Test it as an experiment, not a rollout
Behavior is contextual — run the added-question step against your existing flow rather than assuming the lift transfers.
In the wild
Titlecare sells a device that lets you remotely connect to a physician — a bit hard to understand. Irrational Labs added a quiz to the site asking users about their medical behavior and their comfort with technology, to help them engage with what the device does for them.
→ 53% of people who completed the quiz went on to purchase, versus 37% of those who didn't complete it.
Trunk Club publicly reported adding benefit-engaging questions into their signup flow, in the same style as Stitch Fix's style quiz.
→ Reported a 133% increase in conversion.
Common mistakes
Asking an open-text question
Teams routinely misjudge an open-text field as 'easy'. It isn't — it demands composition and thought at the exact moment you need momentum. Berman's team lost 40% page-over-page conversion on one.
Relying on the benefits carousel
Telling users the benefit is passive. The mechanism here is active engagement — the user has to do the thinking about how the benefit fits their life. Swap the carousel for the question.
Is it for you?
Best for
Growth PMs on a signup, onboarding or checkout flow where the product's value is not immediately obvious to a first-time user.
Not ideal for
Flows where the benefit is already blindingly obvious and the only real problem is genuine logistical friction — there, cut steps.
From the transcript
“you can actually increase friction and increase conversion”
“so when you ask a question you can insert an idea into someone's head you can get them thinking about something different”
“if you like do Stitch fix or actually Trunk Club has come out and said they did this and it increased conversion by 133 percent…”
“we ask them questions about their medical Behavior their frequencies of technology and for people who completed a quiz 53 of them went on to…”
“for sure some questions are harder and you should not ask them when questions are easier and it's a drop down multiple choice this is…”
From the episode
Using behavioral science to improve your product
Kristen Berman (Irrational Labs)