Market research methods that really work for personas

Do you want to better understand your target audience—but don’t have the budget for a market research firm or the time for a training seminar? Then you’ve come to the right place. In this article, we’ll show you which market research methods actually work in practice—and provide you with a concrete interview guide featuring 12 questions you can use right away.

What sets us apart: We consistently distinguish between buyer personas (your customers and decision-makers) and candidate personas (your ideal candidates in recruiting). Although the methodology is similar, the questions and objectives are fundamentally different.

Why Traditional Market Research Often Misses the Mark When It Comes to Personas

Many companies associate market research with complex quantitative studies, representative panels, and reports that run to pages on end. While these have their place, they are often the wrong starting point for developing a genuine understanding of the target audience.

The most common problems in practice: results come too late, remain too abstract, or answer the wrong questions. For example, if you want to find out why a particular target group is rejecting your offer, you don’t need an extrapolation based on 2,000 cases. You need ten good conversations.

Key point: Qualitative research explains the “why” behind behavior. Quantitative research shows how widespread that behavior is. Both are important—but the order matters.

The three methods you really need

Three methods have proven particularly effective for creating practical personas. None of them requires prior academic knowledge—but all demand care and structure.

1. In-depth interviews

One-on-one interviews with real representatives of your target audience—whether customers, non-customers, applicants, or employees. Duration: 30–45 minutes. Format: via video call or in person. Ideally, 8–15 interviews per persona segment.

When creating buyer personas, you speak with customers, lost prospects, or decision-makers in the buying center. The goal is to understand purchase motivations, barriers, decision-making processes, and comparison criteria.

When developing candidate personas, you’ll speak with current employees, rejected applicants, or those who have resigned. The goal is to understand their reasons for leaving, their expectations of employers, how they seek information, and what dealbreakers they encounter during the application process.

2. Behavioral and usage data

Web analytics, CRM data, applicant tracking systems, social media metrics—this data shows you what people actually do (as opposed to what they say in interviews). Use it to supplement and balance qualitative insights.

3. Quantitative data

Industry studies, labor market data, competitive analyses, employer review sites—these provide the context in which you can contextualize your qualitative findings. To this end, the Persona Institute uses tools such as the Persona Profiler, which combines scientifically collected datasets with your own data.

The Guide to In-Depth Interviews: 12 Questions That Yield Real Insights

Now we’re getting down to business. The following guide is structured to work for both persona types—with wording tailored to each. Each question has a clear objective.

Important: Ask open-ended questions. Avoid leading questions. Allow for pauses—the most valuable answers often come after a brief silence.

Buyer Persona vs. Candidate Persona: What You Need to Know

Although the methodological approach is similar for buyer and candidate personas, the objectives differ fundamentally. Anyone who ignores this will end up with personas that don’t work in practice.

Practical tip: Never use the same interview guide for buyer and candidate interviews. The contexts are too different. Use the 12 questions above as a starting point—but tailor your wording and examples to the specific context.

How to Conduct Effective Interviews: 7 Practical Tips

1. Talk to the right people. For buyer personas: decision-makers and influencers—not just satisfied existing customers. For candidate personas: employees at different stages (new, experienced, and former).
2. 8–15 interviews per segment are sufficient. After the eighth interview, patterns begin to repeat. This isn’t a mistake—it’s a sign that you have enough data.
3. Record the conversation (with consent). If you try to listen and take notes at the same time, you’ll miss some of the nuances. Transcribing the conversation afterward yields better results.
4. Ask about specific situations. Don’t ask , “What’s important to you in an employer?” Instead, ask, “Tell me about a situation where you realized something wasn’t right.”
5. Follow this order. Start with the context, then the motives, then the process, and finally the evaluation. This will help you build trust and get increasingly honest answers.
6. Resist the temptation to pitch. Interviews aren’t sales pitches. As soon as you start explaining your product or your company, the interview is ruined.
7. Document quotes, not just summaries. Direct quotes are invaluable for later persona development and internal communication.

From Interviews to Personas: Here's How

Interviews alone don't make a persona. The real work begins with the analysis—the systematic identification of patterns across all conversations.

Step 1: Clustering. Group statements by topic (motives, barriers, triggers, information sources, decision-making criteria). Use the learning objectives of the 12 questions as a framework.

Step 2: Identify patterns. Which statements recur? Where are there clear differences between groups? These patterns form the basis for your persona segments.

Step 3: Enrich. Supplement qualitative insights with quantitative data: web analytics, CRM reports, or—for a solid empirical foundation—the Persona Profiler from the Persona Institute.

Step 4: Visualize and embed. A persona that sits on a shelf is worthless. Good personas are concise, visually appealing, and integrated into decision-making processes—from campaign planning to job postings.

Context: DIN SPEC 33462 as a methodological framework

The methods described here are essentially consistent with the framework outlined in DIN SPEC 33462data-driven personas.” This specification, published by the German Institute for Standardization, defines for the first time a structured process for the development and use of personas in marketing, product development, and recruiting. The goal of the DIN SPEC is to make the creation of personas more transparent, consistent, and reproducible.

The standard does not prescribe a rigid process, but rather provides a practical framework: from defining objectives through data collection and segmentation to modeling, validation, and the application of personas. This gives companies guidance on how to build target audience models in a systematic and data-driven way—rather than relying solely on assumptions or workshop results.

The interviews, data sources, and analysis steps presented in this article fit perfectly within this framework. Qualitative interviews provide the necessary insight into motivations, barriers, and decision-making processes. Quantitative data helps contextualize and validate these findings. It is only through this combination that robust personas emerge—personas that can actually be used in marketing, sales, or recruiting.