In-Depth Interview Methodologies

Six IDIs Formats, One Goal:
Deeper Intelligence

Every research question demands a different approach. Nextyn offers six distinct In-Depth Interview (IDIs) methodologies, each designed for specific research objectives, respondent types, and strategic outcomes. Explore the formats below to find the right fit for your project.

6
IDIs Methodologies
135,000+
Experts
70+
Countries Covered
24 hrs
Average Turnaround

Not Sure Which Format Fits?

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The Six Methods

Choose the Right IDIs Format for Your Research

Nextyn sources respondents from a curated network of 135,000+ experts across 70+ countries. Every expert is screened for relevance, recency of experience, and ability to speak credibly on the topic at hand.

Method 01

Expert IDIs

Structured interviews with industry professionals, former executives, and subject-matter specialists. Best for investment diligence, competitive intelligence, and market mapping where the respondent's professional experience is the primary source of insight.

Best For:

PE due diligence, competitive landscape research, market entry assessments, technology adoption studies

Method 02

Customer IDIs

Deep-dive conversations with current, lapsed, or prospective customers to understand purchase motivations, pain points, and decision journeys. Uncovers the emotional and rational drivers behind buying behaviour that surveys cannot capture.

Best For:

Customer journey mapping, churn analysis, brand perception research, proposition testing, NPS deep-dives

Method 03

B2B Decision-Maker IDIs

Targeted interviews with procurement managers, C-suite executives, and buying committee members to understand complex B2B purchase decisions. Maps the full decision-making unit and identifies the most influential factors in the buying process.

Best For:

B2B product development, enterprise sales strategy, buyer behaviour research, vendor evaluation studies

Method 04

Healthcare IDIs

Specialised interviews with healthcare professionals, patients, payers, and regulators. Conducted under strict ethical protocols and confidentiality frameworks, with moderators who understand clinical terminology and healthcare system dynamics.

Best For:

MedTech market assessment, pharmaceutical launch research, patient journey studies, HCP perception research

Method 05

Moderated Panel IDIs

A hybrid format combining the depth of IDIs with the comparative value of a panel. Multiple respondents are interviewed sequentially on the same discussion guide, allowing for structured comparison of perspectives across different segments or markets.

Best For:

Multi-market studies, segmentation research, cross-cultural comparisons, concept testing across buyer types

Method 06

Longitudinal IDIs

A series of repeat interviews with the same respondents over an extended period to track evolving opinions, behaviours, and experiences over time. Provides dynamic intelligence that point-in-time research cannot deliver.

Best For:

Product adoption tracking, post-investment monitoring, behaviour change studies, long-term customer relationship research

Not Sure Which IDIs Method
Fits Your Project?

Describe your research objective to Nextyn's specialist team and we will recommend the right methodology and design a programme around your specific needs.

Speak to a Specialist