Online Semi-structured Interview — Virtual Qualitative Interview
Online Semi-structured Interview · Also known as: virtual semi-structured interview, remote semi-structured interview, online qualitative interview, video-mediated semi-structured interview
An online semi-structured interview is a qualitative data collection technique in which a researcher conducts a guided but flexible conversation with a participant over a digital medium — video call, telephone, chat, or email — using a prepared interview guide with open-ended questions while remaining free to probe, reorder, or add follow-up questions as the dialogue unfolds. It combines the accessibility of remote communication with the depth and adaptability of semi-structured inquiry.
Read the full method
Sign in with a free account to read this section.
Method map
The neighbourhood of related methods — select a node to explore.
+1 more
When to use it
Use online semi-structured interviews when you need in-depth, qualitative, participant-driven data and face-to-face access is impractical — participants are geographically dispersed, mobility-restricted, or prefer the psychological distance of a remote setting. The method suits exploratory and interpretive research questions about experiences, perceptions, meanings, or processes. Typical sample sizes range from 10 to 30 participants for a stand-alone qualitative study. Do not use when the research question requires numerical prevalence data (use a survey), when the topic demands extended naturalistic observation (use ethnography), when participants lack reliable internet or device access without mitigation, or when the topic is so sensitive that the absence of in-person rapport may cause distress or reduce disclosure.
Strengths & limitations
- Removes geographic barriers — participants from multiple countries or remote regions can be interviewed at low cost.
- Flexible guide structure allows the researcher to follow emerging threads while maintaining consistent topic coverage across participants.
- Suitable for sensitive or stigmatised topics where participants may feel safer disclosing from their own environment.
- Asynchronous variants (email interview) give participants time to reflect and produce more considered, detailed responses.
- Reduced travel time and scheduling friction compared with face-to-face interviews increases feasibility for both researcher and participant.
- Loss of full non-verbal cues in telephone and text-based formats may reduce the richness of interactional data and impede rapport.
- Technical failures — poor connectivity, platform crashes, audio drop-outs — can disrupt interview flow and damage data quality.
- Digital divide: participants without reliable internet access, devices, or digital literacy may be inadvertently excluded, introducing sampling bias.
- Asynchronous email interviews can suffer from high dropout and delayed responses, extending data collection timelines.
- Confidentiality risks if the platform is not secure or if participants are in non-private environments during the call.
Frequently asked
Is an online semi-structured interview as valid as a face-to-face one?
Research comparisons generally find that well-conducted video interviews produce data of comparable depth and quality to face-to-face interviews for most topics. Some loss of non-verbal nuance occurs, especially in phone or text formats, but many participants report feeling more comfortable and open in their own environment. Validity depends more on researcher skill and guide quality than on the medium per se.
How many participants do I need?
For a stand-alone qualitative study, 10–30 participants is a commonly cited range; the operative criterion is data saturation, the point at which new interviews add no substantially new themes. For highly homogeneous samples or narrow research questions, saturation may be reached at 12–15; for heterogeneous populations a larger sample may be needed. The number should be justified in relation to the study's scope and theoretical framework.
Which platform should I use — video, phone, or chat?
Video platforms (Zoom, Teams, Google Meet) are preferred when non-verbal context and rapport matter or when the topic is complex. Phone is a viable fallback when participants lack camera access or bandwidth. Synchronous chat suits participants with hearing impairments or strong text preferences. Asynchronous email suits reflective topics and participants with scheduling constraints. Match the medium to the participant's access and the topic's sensitivity.
Can I mix online and face-to-face interviews in the same study?
Yes, mixed-mode qualitative sampling is acceptable and sometimes necessary to reach the full range of purposively selected participants. The analytic approach remains consistent across modes; however, you should note the mode for each interview, discuss any apparent differences in data richness, and consider whether mode is confounded with participant characteristics when interpreting findings.
Do I need special ethical approval for online interviews?
Standard ethical requirements for qualitative research apply: informed consent, confidentiality, right to withdraw, and data security. Online interviews add platform-specific concerns: choose encrypted, GDPR- or IRB-compliant platforms; store recordings securely; clarify who owns and can access recordings; and assess whether participants are in private settings during the interview. Many institutions have updated ethics guidelines specifically for online qualitative research.
Sources
- Brinkmann, S., & Kvale, S. (2015). InterViews: Learning the Craft of Qualitative Research Interviewing (3rd ed.). Sage. ISBN: 978-1452203867
- Salmons, J. (2014). Qualitative Online Interviews: Strategies, Design, and Skills (2nd ed.). Sage. ISBN: 978-1483332673
How to cite this page
ScholarGate. (2026, June 3). Online Semi-structured Interview. ScholarGate. https://scholargate.app/en/survey-methodology/online-semi-structured-interview
Which method?
Set this method beside its closest kin and read them side by side — the library lays the books on the table; the choice is yours.
- Face-to-face Semi-structured InterviewSurvey Methodology↔ compare
- Online Focus GroupSurvey Methodology↔ compare
- Online Structured InterviewSurvey Methodology↔ compare
- Online SurveySurvey Methodology↔ compare
- Semi-Structured InterviewQualitative↔ compare