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Best practice · 4 min read

7 Costly In-Depth Interviews Mistakes Brands Make in India

Avoid the most common in-depth interviews mistakes in India: wrong audience, metro-only samples, poor translation, weak QC and reports nobody acts on.

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Quick answer

The most costly in-depth interviews mistakes in India are researching the wrong audience, covering only metros, relying on poor translation, skipping quality control, asking too many questions, ignoring regional differences, and producing reports that never lead to action.

At a glance

Guide type
Best practice · 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
Teams whose last study disappointed · Researchers reviewing a design · Clients reading a draft report

Key takeaways

  • Metro-only samples rarely represent India
  • Translation quality directly affects data quality
  • Shorter, sharper studies produce better data
  • Plan for action before fieldwork starts

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.

  • Teams whose last study disappointed

    Most in-depth interviews failures trace back to decisions taken before fieldwork, not to the fieldwork itself.

  • Researchers reviewing a design

    A pre-field quality check to run against the questionnaire or the discussion guide.

  • Clients reading a draft report

    What to probe when the findings feel thinner than the invoice.

01

The seven mistakes

  • Vague audience definitions
  • Assuming Mumbai and Delhi represent India
  • Literal translations that change meaning
  • No independent back-checks
  • Overlong questionnaires that cause fatigue
  • Ignoring regional and cultural nuance
  • Reports with data but no recommendations

02

How to avoid them

Treat in-depth interviews as a decision tool. Agree the hypotheses, the audience and the action plan upfront, and choose a partner whose quality control you can audit.

03

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

    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.

  • 06

    Regional language nuance lost in translation

    Category language in Hindi, Tamil or Marathi rarely survives live translation. Work in the respondent's language and translate the transcript, not the conversation.

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. 1

    Write the screener before the discussion guide; who you talk to decides more than what you ask.

  2. 2

    Pilot two interviews and rewrite the guide before the rest are scheduled.

  3. 3

    Record and transcribe with explicit consent, and keep the recording in the interview language.

  4. 4

    Ladder every important answer with “and why does that matter to you?” at least twice.

  5. 5

    Code to a shared framework, so two analysts reading one transcript reach the same themes.

  6. 6

    Record and transcribe in the respondent's own language, with consent captured in writing.

  7. 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.

What is the single biggest mistake?

Starting without a clear decision for the research to inform.

Request a proposal

Talk to a in-depth interviews specialist.

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.

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