The Mom Test in Practice: How to Get Honest Feedback

When founders present new business ideas, products or business models, they tend to encounter a familiar pattern: friendly nods, compliments, and the occasional cautious "Sounds interesting!" But how reliable is that kind of approval when it comes to building a viable business? Founders who depend on genuine market feedback are particularly at risk of mistaking a comfortable façade for real validation. The hard truth is that agreement is rarely evidence of market relevance — it is usually an expression of social dynamics. The result is poor decision-making, wasted resources and missed opportunities, often with serious consequences for the entire venture.

The principle of the "Mom Test" by Rob Fitzpatrick addresses exactly this dilemma.

It provides founders with a methodical approach to obtaining reliable, honest answers in conversations with potential customers, industry partners, or investors – even from people who would normally avoid disagreeing with you out of loyalty or politeness. In the following, you will learn why classic questioning techniques regularly lead you astray, which principles the Mom Test establishes, and how to embed these directly into your founding process. For the broader context and strategic overview, please refer to the main article on the Mom Test.

Most founders – whether launching their first start-up or giving it a second go – are conditioned to seek validation. For example, they ask:

• "Do you think this is a good idea?"
• "Would you use this product?"
• "How much would you be willing to pay for this?"

Such questions may seem harmless, but they are dangerous for two reasons: first, they invite dishonesty, because nobody wants to discourage a founder. Second, they are hypothetical and disconnected from real market behaviour. Within your own network, among industry contacts, or in the family, the likelihood of receiving overly positive answers is particularly high – a risk that can quickly become existential for founders.

The "Mom Test" proposes a radical shift in perspective for founders: instead of asking for opinions, you talk about the real life of the person you're speaking with. The core idea:

Ask your questions in a way that even your mother won't give you the answer you want to hear out of politeness.

The three core principles for founders:

• Talk about the other person's life, not your own idea: Direct your curiosity towards the actual challenges, routines, and approaches of your target audience. Your own solution stays out of the conversation for now.
• Ask about specific past experiences, not opinions or future plans: past behaviour is the best predictor of future decisions. Ask about real actions, not intentions.
• Talk less, listen more:
  Make space for stories, problems and details. The less you talk, the more honest and nuanced the feedback will be.

Examples of "Mom Test"-compliant questions in the context of starting a business:

• "How did you last attempt to solve this problem?"
• "Which tools or providers have you used so far? What frustrated you about them?"
• "How much time or money are you currently investing in this task?"
• "Who was last involved in the decision?"

What you should avoid:

• "Would you…?"
• "Do you find…?"
• "What do you think of my idea?"
• "Would you be willing to pay … ?"

Imagine you are a founder developing new software for process optimisation in the mid-market. The classic approach would be to ask potential customers: "Would you use a solution that digitalises your processes?" The answer: "Of course, digitalisation is important!" — and just like that, you feel validated.

The "Mom Test" approach looks different:

You ask:

• "How have you tried to optimise your processes over the last six months?"
• "What solutions have you tested? What worked, and what didn't?"
• "How much budget did you allocate to this in the last year?"
• "Was there a particular point at which you felt especially frustrated?"

The answers provide you with real data: Which problems are genuinely relevant? Where do existing solutions fall short? How strong is the actual willingness to pay, measured against expenditure already made?

Experience from practice:
Many founders report that after applying the "Mom Test" they fundamentally revised their product strategy — because for the first time they truly understood what customers actually do (rather than what they politely claim to do).

The "Mom Test" is more than a tool for early product validation for founders. Whether engaging with investors, developing business models, or working within your own founding team, it helps you step out of the comfort zone of easy agreement:

• In customer interviews: Rather than asking about desired features, analyse how customers have previously dealt with similar challenges.
• In sales: Instead of "Would you buy this?", try: "When did you last invest in a comparable solution? What prompted that decision?"
• In a team setting: Instead of "Do you think this project makes sense?", try: "What comparable projects have we carried out in the past? What were the stumbling blocks?"
• When speaking with investors: Instead of "Do you think our market is large enough?", try: "What comparable investments have you seen recently? What were the deciding factors?"

If you notice that your environment or team tends towards politeness, it helps to take a closer look at the mechanisms behind the feedback illusion.

Advantage:
You receive not only more honest, but also more nuanced and strategically actionable responses. You identify patterns, genuine decision-making logic, and can adapt your offerings, processes, and communication in a targeted way.

a) Talking about your idea too soon
The earlier you introduce your solution into the conversation, the more you influence the answers. People do not want to disappoint founders – and will tell you what you want to hear. Hold back your idea for as long as possible.

b) Asking for opinions instead of behaviour
Opinions are cheap, behaviour is costly. Ask about concrete actions, not hypothetical scenarios.

c) Unclear target group / vague interlocutors
Speak with real decision-makers and those directly affected, not with "well-meaning" friends or colleagues. Only those who have experienced the problem first-hand can give you an honest account of it.

d) Talking too much, listening too little
Avoid monologues, pitches, or justifications. Your job is to listen and ask questions.

Step 1: Define your objective
What do you really want to find out? Is it about understanding the problem, willingness to pay, or decision-making processes?

Step 2: Identify the right people to talk to
Who has first-hand experience of the problem? Who actually makes the decision about a solution?

Step 3: Prepare Questions
Formulate open-ended, behaviour-based questions. Avoid leading questions and opinion-based queries.

Step 4: Listen and document
Note down verbatim statements, not your own interpretation. Hold back your own ideas.

Step 5: Identify Patterns and Derive Hypotheses
What do you keep hearing repeatedly? Where are there contradictions? Which assumptions do you need to challenge?

Step 6: Translating Results into Strategy
Adapt your offering, communication, or processes in a targeted way based on the insights you have gained.

Consistently applying the "Mom Test" transforms not just individual conversations, but the entire validation and feedback culture within a start-up. Founders who actively seek out dissenting opinions, treat mistakes as learning opportunities, and protect critical voices create an environment in which truth and innovation can thrive. This pays dividends — in better decisions, greater innovative capacity, and lasting competitiveness.

Founders who master the "Mom Test" gain not only honest feedback, but also a decisive competitive advantage. It is time to step out of the comfort zone of easy agreement and gather genuine insights – for better products, compelling strategies, and a learning-ready organisation.

Would you like to know how to apply this technique when validating your business idea and throughout the founding process? Get in touch with us for a personalised sparring session. Together, we will develop the right questions, identify your blind spots, and turn honest feedback into the driving force behind your entrepreneurial success. For more on why agreement can be misleading, read our article on the feedback illusion. For more on the strategy and context of the Mom Test, visit our overview article.

➡️ Further articles:
• Testing your own business model
• Understanding and applying the Business Model Canvas