Types of Interviews | Full Guide & Examples

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What is a structured interview?

Structured interviews follow a predetermined set of questions presented in a fixed order. They typically rely on closed-ended questions, such as yes/no questions or multiple-choice responses, although open-ended structured interviews can also be conducted. Because of their standardized format and focus on measurable responses, structured interviews are often used as a more quantitative research method in academic or research contexts.

Using the same questions and sequence for every participant makes it easier to identify patterns, compare responses, and control for external factors that could influence the results. This consistency can help reduce researcher bias and improve the reliability and validity of the findings. However, the rigid format of structured interviews can also make them feel less conversational and may limit participants’ ability to provide detailed or unexpected insights.

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What is a semi-structured interview?

Semi-structured interviews combine elements of both structured and unstructured approaches. While the interviewer begins with a set of guiding questions or topics they want to explore, the wording and order of questions can be adapted based on the flow of the conversation.

These interviews are typically open-ended, giving participants the freedom to share detailed responses while still following a clear thematic framework. This balance between consistency and flexibility is why semi-structured interviews are often described as offering “the best of both worlds.”

However, because the questions and discussions may vary between participants, comparing responses and identifying consistent patterns can be more challenging. This variation may affect the generalizability and validity of the findings.

Semi-structured interviews are often used in recruitment processes.

What is an unstructured interview?

Unstructured interviews are the most flexible form of interviewing. Unlike structured or semi-structured approaches, they do not follow a predetermined list of questions or a fixed order. Instead, the conversation develops naturally, with the interviewer adapting their questions based on the participant’s responses and the direction of the discussion.

Because of their open-ended nature, unstructured interviews can provide rich, detailed insights into a topic while still allowing researchers to identify common themes and patterns across participants. This flexibility makes them particularly useful for exploring complex experiences, opinions, and perspectives.

However, the lack of structure also makes unstructured interviews more difficult to conduct effectively. Interviewers must be skilled at guiding the conversation while avoiding leading questions or introducing personal biases. Poorly phrased questions or inconsistent interviewing techniques can affect the reliability of the data and potentially compromise the validity of the research.

What is a focus group?

A focus group is a qualitative research method that brings together a small group of participants to discuss a specific topic under the guidance of a moderator. In addition to analyzing participants’ answers, researchers often examine group interactions, dynamics, and nonverbal cues such as body language. Focus groups are commonly used to explore consumer opinions, human behavior, attitudes, and responses to products, services, or complex social topics.

Compared with individual interviews, focus groups can generate more diverse perspectives and encourage participants to build on each other’s ideas. They are also generally easier to organize than large-scale surveys or experiments. However, their small sample size can limit the generalizability of findings, and researchers must be careful to avoid selectively focusing on responses that support their existing assumptions.

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Examples of interview questions

The type of interview you choose will influence the style, wording, and purpose of your questions. Structured interviews typically use predefined, specific questions, while semi-structured and unstructured interviews allow for more flexibility, follow-up questions, and open-ended discussion.

The types of questions asked in an interview also depend on its purpose and context. For example, job interviews often include behavioral interview questions, such as those based on the STAR interview method, to assess a candidate’s past experiences, skills, and problem-solving abilities.

Below are some examples of interview questions for each approach.

Advantages and disadvantages of interviews

Interviews are a valuable research method for collecting in-depth insights and exploring topics in greater detail than many other data collection approaches. Beyond participants’ spoken responses, interviews can also reveal important contextual information through nonverbal cues, spontaneous reactions, and emotional responses.

However, conducting effective interviews requires careful planning and skill. They can be time-intensive to organize, carry out, and analyze, and smaller sample sizes may limit the reliability and generalizability of the findings. Researchers must also be aware of the potential for interviewer bias, as unintentionally leading questions or personal influence can affect participants’ responses.

The following overview outlines the advantages and disadvantages of each interview type to help you determine whether interviews are the right research method for your study.

Frequently asked questions about different types of interviews

How can I improve nonverbal communication in job interviews?

Here are some tips to help you improve nonverbal communication in your next interview:

• Posture: Sit upright with shoulders back. Avoid slouching or crossed arms
• Eye contact and facial expressions: Hold eye contact naturally, nod occasionally, and smile genuinely. Match expressions to the context.
• Gestures and hands: Use open gestures and keep your hands relaxed and visible. Avoid fidgeting or crossing your arms.
• Practice tips: Record yourself in mock interviews, practice in front of a mirror, or get feedback to spot habits like tapping your fingers.

Have more questions about interview prep? Quillbot’s AI Chat can help you explore further.

How do you write a thank you email after a Zoom interview?

Write a thank you email after a Zoom interview by following these steps:

• Address the email to the person or people who were part of the Zoom call (e.g., the hiring manager and a potential colleague).
• Write a subject line with “Thank You” and the title of the role from the job posting (e.g., “Thank You: Financial Advisor Zoom Interview”).
• Thank the interviewer(s) for telling you more about the company and/or role.
• Mention something about the company or role you’re excited about.
• If applicable, elaborate on one of your interview responses, or mention anything you might’ve forgotten.
• Reiterate your main hard skills, soft skills, or transferable skills (similar to the claim when you start a cover letter).
• Remind the interviewer that you’re eager to learn more about the next steps.
• Write a complimentary close (e.g., Sincerely) followed by your full name and your contact information.

Follow up with confidence: Let Quillbot’s follow up email generator help you create emails that are polished, persuasive, and impactful.

What are the 4 main types of interviews?

The four most common types of interviews are:

• Structured interviews: Follow a predefined set of questions, with both the topics and order of questions determined in advance.
• Semi-structured interviews: Use a set of planned questions or themes while allowing the interviewer to introduce additional questions as the conversation develops.
• Unstructured interviews: Do not follow a predetermined list of questions, allowing the discussion to develop naturally based on participants’ responses.
• Focus group interviews: Involve asking questions to a group of participants rather than an individual, with the goal of exploring shared perspectives, discussions, and group dynamics.

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