Customer Interview Guide Template

Type: Execution Recipe Confidence: 0.91 Sources: 6 Verified: 2026-03-11

Purpose

This recipe produces stage-specific interview guides with exact question scripts, probing follow-ups, anti-pattern warnings for each question, and a structured analysis template for synthesizing insights across 5-15 interviews. Follows The Mom Test methodology for bias-resistant customer research.

Prerequisites

Constraints

Tool Selection Decision

PathFocusDurationKey Output
A: Problem DiscoveryPain validation, current solutions45-60 minProblem severity ranking
B: Solution ValidationSolution fit, usability, pricing30-45 minFeature priority list
C: Customer FeedbackSatisfaction, expansion, churn30 minNPS drivers + churn risks
D: Win/Loss AnalysisDecision process, competitors45 minWin/loss patterns

Execution Flow

Step 1: Build the Interview Guide

Duration: 1-2 hours | Tool: Document editor

Select the appropriate template by stage. Each question includes follow-up probes and anti-pattern warnings. Problem discovery: 12 questions covering context, pain points, willingness to pay, and buying context.

Step 2: Recruit Interviewees

Duration: 3-7 days | Tool: Email, LinkedIn

Target 5-15 interviews per persona. Use warm introductions first, then LinkedIn outreach, then paid recruitment panels as fallback.

Step 3: Conduct Interviews

Duration: 30-60 min each | Tool: Zoom + Otter.ai

Follow the 80/20 rule: 80% listening, 20% asking. Record everything. Capture exact quotes. Look for green flags (specifics, emotion, action, money) and red flags (compliments, fluff, wishlists).

Step 4: Analyze and Synthesize

Duration: 3-6 hours | Tool: Google Sheets + Miro

Build cross-interview analysis identifying patterns with frequency and confidence scores. Validate or invalidate original hypotheses.

Step 5: Generate Deliverables

Duration: 2-3 hours | Tool: Document editor

Produce interview guide, analysis spreadsheet, discovery findings report, and recommended next steps.

Quality Benchmarks

MetricMinimumGoodExcellent
Interviews per persona>= 5>= 8>= 12
Specific examples/interview>= 3>= 5>= 8
Patterns with 40%+ frequency>= 2>= 4>= 6
Hypotheses tested>= 3>= 5>= 8

Error Handling

ErrorCauseRecovery
Only polite positive responsesLeading or solution-focused questionsRewrite to focus on past behavior; remove product mentions
No clear patterns after 10 interviewsSegment too broadNarrow persona definition; add behavioral questions
High no-show rate (>30%)Insufficient motivationAdd $50 incentive; send 1hr reminder
Surface-level answersQuestions lack depthAdd "last time..." probes; use 5-second silence rule

Cost Breakdown

ComponentFreePaidAt Scale
Video callsGoogle Meet ($0)Zoom ($13.33/mo)Zoom Business ($18.33/mo)
TranscriptionZoom ($0)Otter.ai ($8.33/mo)Rev ($1.50/min)
IncentivesNone ($0)$50/person$150-200/person
Total (10 interviews)$0$500-700$2K-3K

Anti-Patterns

Wrong: Asking "Would You Use This?"

Hypothetical questions produce hypothetical answers with no predictive value for actual purchase behavior. [src1]

Correct: Ask About Past Behavior

Replace hypotheticals with "Tell me about the last time you dealt with [problem]."

Wrong: Pitching During the Interview

Once you pitch, every answer is contaminated by social pressure. [src3]

Correct: Problem-First, Solution-Last

Spend 90% understanding their world. Only mention your solution in the final 2 minutes, if at all.

When This Matters

Use this recipe any time you need to learn from customers or prospects through direct conversation — before building, after launching, when pivoting, or when sales patterns are confusing.