Validation Framework · GENERAL STARTUP Edition

Using the Mom Test for Startup Validation

Applying Rob Fitzpatrick's "Mom Test" means never asking users if your idea is good. Instead, you validate by asking hyper-specific questions about their past behaviors, actual budgets, and current makeshift workarounds.

Time to validate: 1-2 weeks3 steps

What Does 'Validated' Actually Mean?

Extracting unbiased, empirical data about past customer spending behavior.

Signs You're Validated

  • The user describes an elaborate, painful Excel spreadsheet they built to solve the problem
  • The user reveals they currently pay an expensive consultant to do the task manually
  • The user gets emotionally frustrated describing their current workflow

The 3-Step Validation Process

Ban the Future Tense

Never ask 'Would you use this?' or 'How much would you pay?'. These elicit polite lies.

Time required: Pre-interview prep

Interview Script

After this step you have: A script focused entirely on past actions.

Ask for the Workaround

Ask: 'Talk me through the last time you dealt with this problem. What exactly did you do to fix it?'

Time required: During interview

Otter.ai

After this step you have: Proof that the problem is painful enough to demand action.

Check the Wallet

Ask: 'How much money or time have you already spent trying to solve this?' If the answer is zero, the problem isn't worth solving.

Time required: During interview

Notes

After this step you have: Validation of market willingness to pay.

Mistakes That Kill the Validation Process

  1. 01Pitching your solution in the first 5 minutes of the interview
  2. 02Accepting 'That's a great idea!' as actual market validation
  3. 03Asking hypotheticals like 'If we built X, would you buy it?'

Tools Referenced in This Guide

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Context · General Startup · validation


Frequently Asked Questions

The Mom Test is an interview framework by Rob Fitzpatrick that prevents founders from getting false positives. You validate ideas by asking about past behavior and actual spending, never pitching the idea itself.