Checklist · 4 min read

In-Depth Interviews Checklist: 12 Steps Before You Commission a Study

A 12-step checklist for planning a in-depth interviews project in India, from objectives and audience to sampling, quality control and reporting.

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Quick answer

Before commissioning in-depth interviews, define the decision it will inform, the audience, the cities, the sample, the method, the timeline and the budget. Then agree quality-control and reporting standards with your agency.

At a glance

Guide type: Checklist · 4 minute read
Method covered: In-Depth Interviews
Research family: Qualitative research
Typical timeline: 4–6 weeks from guide sign-off to the thematic report
Typical sample: 20–30 interviews per audience, stopping when new themes stop appearing
Written for: Project managers running the study · In-house teams doing it themselves · Reviewers signing off a vendor plan

Key takeaways

Start from the business decision, not the questionnaire
Fix the audience definition early
Agree QC and deliverables upfront
Plan how findings will be used

Reader intent

Who this guide is for

Three readers arrive here with different problems. Each should be able to act on this page without reading all of it.

Project managers running the study
A working sequence for a in-depth interviews project, from brief through field to debrief.
In-house teams doing it themselves
The quality controls an agency would apply, written so that you can apply them yourself.
Reviewers signing off a vendor plan
Read it as an audit list against the proposal currently on your desk.

The 12-step checklist

Write down the business decision
List the information gaps
Define the target audience precisely
Choose cities and the urban/rural split
Set the sample size and key segments
Pick the method (face-to-face idis, telephonic idis, expert interviews, paired depths)
Agree languages and translation
Draft and pilot the questionnaire or guide
Agree quality-control checks
Set the timeline and milestones
Define deliverables and format
Plan the debrief and next actions

Why the order matters

Each step constrains the next. Changing the audience late, for example, can reset sampling, cost and timeline.

How Market Research India can help

Market Research India designs and runs in-depth interviews projects across 50 Indian cities and 30 industries. A senior research director leads every study, and our own supervised teams handle the fieldwork. You get clear recommendations, not just data tables.

Share your objective and we will send a scoped, fixed-fee proposal within 24 hours, with a recommended method, sample and timeline.

What goes wrong

Common mistakes in in-depth interviews

Most disappointing in-depth interviews studies fail for reasons that were visible in the design, not in the fieldwork. These are the ones we see most often, and what to do instead.

01
Questions that carry their own answer
“What do you dislike about the service?” presumes dislike. Ask what happened last time, then follow the story rather than the hypothesis.
02
Accepting the first answer
The first response is a rationalisation. Laddering — asking why that matters, three or four times — is what separates a depth interview from a long survey.
03
Recruiting everyone from one source
Twenty-five interviews all sourced from a single customer list describe that list, not the market. Use at least two independent recruitment routes.
04
Counting mentions as if they were data
“14 of 25 said” lends a qualitative sample the authority of a survey it has not earned. Report themes and their reasoning, and quantify separately if you need numbers.
05
Verbatims presented as findings
A deck of quotes is evidence, not a conclusion. Code to themes, note how widely each appears, and write the implication for the decision beside it.
06
Moderator bias nobody checks
A moderator who already believes the answer nods at agreement and probes only dissent. Brief on the decision rather than the hypothesis, and review the first session before the rest go ahead.

Run through this before sign-off

Your checklist before you brief anyone

A working sequence for a in-depth interviews project. Most of it costs nothing, and it saves the two weeks a re-field would take.

1
Write the screener before the discussion guide; who you talk to decides more than what you ask.
2
Pilot two interviews and rewrite the guide before the rest are scheduled.
3
Record and transcribe with explicit consent, and keep the recording in the interview language.
4
Ladder every important answer with “and why does that matter to you?” at least twice.
5
Code to a shared framework, so two analysts reading one transcript reach the same themes.
6
Hold a same-day field debrief, before impressions harden into a story.
7
Agree in writing who acts on each finding, and by when, before the debrief ends.

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Answers

Frequently asked questions

The questions buyers ask us most often before they commission in-depth interviews.

Can an agency help with the checklist?

Yes. A good agency will workshop these steps with you before it quotes.

From guide to project

Where in-depth interviews actually gets commissioned

If this guide has settled the method, these are the pages worth opening next: the service itself, and the markets where in-depth interviews is most often run for our clients.

Keep exploring

In-Depth Interviews Checklist: 12 Steps Before You Commission a Study

Who this guide is for

The 12-step checklist

Why the order matters

How Market Research India can help

Common mistakes in in-depth interviews

Your checklist before you brief anyone

Frequently asked questions

Where in-depth interviews actually gets commissioned

More reading on in-depth interviews

More on in-depth interviews

Other checklist articles

In-Depth Interviews city by city

Related research services

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