Visual Elicitation Single Case Study — Image-Prompted In-Depth Case Inquiry
Visual Elicitation in Single Case Study Research · Also known as: photo-elicitation case study, image-based single case study, visual interview case study, VE-SCS
Visual elicitation single case study is a qualitative design that embeds photo or image elicitation techniques within a bounded, in-depth investigation of a single case — a person, community, program, or event. Photographs, drawings, or participant-produced images are introduced into interviews to prompt richer, more vivid accounts than verbal questioning alone can generate, while the single case study frame provides the disciplined contextual analysis needed to understand the case as a whole.
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When to use it
Use this design when you are studying one bounded, complex case in depth and believe that visual data will unlock participant knowledge that verbal questioning alone cannot reach — particularly when the phenomenon involves embodied practice, spatial experience, memory, or identity. It suits research in education, health, community development, organizational studies, and arts-based inquiry. Do not use it when multiple cases need comparison (a multiple case study is more appropriate), when participants are unlikely to engage with visual material due to literacy, culture, or context, or when the research goal is statistical generalization rather than contextual understanding of one case.
Strengths & limitations
- Images access tacit, embodied, or pre-verbal knowledge that direct verbal questions rarely reach.
- The single-case frame allows extraordinary contextual depth — every nuance of the case can be pursued rather than averaged across sites.
- Triangulation of visual and verbal data strengthens the credibility and richness of findings.
- Participant-generated images give participants authorial agency, reducing power imbalances in the researcher–participant relationship.
- Well-suited to under-researched, novel, or highly contextual phenomena where theory is sparse.
- Produces compelling, evidence-rich narratives that communicate findings accessibly to practitioners and policymakers.
- Findings describe one case and are analytically, not statistically, generalizable — readers must judge transferability to their own context.
- Photo elicitation adds logistical complexity: image collection, ethical clearance for photographs of identifiable people or sites, and storage must all be managed.
- Interpretation of visual data is inherently subjective; without reflexive transparency about the researcher's positionality, credibility is undermined.
- Single case studies are vulnerable to the criticism that the chosen case is atypical or researcher-selected for convenience rather than theoretical reasons.
- Data volume is large — rich interviews and visual material produce extensive records that are time-consuming to transcribe, code, and analyse.
Frequently asked
Who produces the images — the researcher or the participant?
Either approach is valid and serves different purposes. Researcher-selected images (archival or field photographs) are efficient when the researcher controls access to relevant visual material and wants to focus discussion on specific moments or settings. Participant-produced images (photo-voice, walking tours, diary photography) give participants greater interpretive agency and often surface dimensions of experience the researcher would not have anticipated. Many studies combine both.
Do I need ethics approval specifically for photographs?
Yes — photographs frequently contain identifiable individuals, recognizable locations, or sensitive content, so they require explicit ethical clearance beyond standard interview consent. You need informed consent from every identifiable person in researcher-selected images, clear protocols for anonymizing or obscuring images in publications, and secure storage procedures. If participants will be photographing others (not just their own environments), consent from those third parties must also be addressed.
How is this different from photo-voice?
Photo-voice is a participatory action research method in which community members are trained to use cameras to document their own lives, with the explicit aim of influencing policy and social change. Visual elicitation single case study uses similar image-generation techniques but the primary purpose is analytical and interpretive — understanding the case deeply — rather than community empowerment or advocacy. Photo-voice studies are also often multi-participant; the single case study variant is tightly focused on one bounded unit.
Can I generalise from a single case?
Not statistically — a single case cannot support claims about how common or representative a finding is across a population. You can, however, make analytic generalisations: arguing that the theoretical propositions, mechanisms, or insights revealed by this case may be applicable to other cases that share the same structural features. Readers judge transferability based on the richness of the case description — a 'thick description' that allows others to assess whether the case resembles their own context.
How many interviews do I need?
There is no fixed number, but for a single case study depth matters more than breadth. Multiple interview sessions with the same participant (iterative interviewing), combined with documents and observations, typically yield richer data than a single session. Most published single case studies report two to five major data collection encounters per participant; the criterion for sufficiency is data saturation — when additional sessions are not generating new themes or insights about the case.
Sources
- Harper, D. (2002). Talking about pictures: A case for photo elicitation. Visual Studies, 17(1), 13–26. DOI: 10.1080/14725860220137345 ↗
- Yin, R. K. (2018). Case Study Research and Applications: Design and Methods (6th ed.). Sage. ISBN: 978-1506336169
How to cite this page
ScholarGate. (2026, June 3). Visual Elicitation in Single Case Study Research. ScholarGate. https://scholargate.app/en/qualitative/visual-elicitation-single-case-study
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.
- Case StudyQualitative↔ compare
- EthnographyQualitative↔ compare
- Narrative AnalysisQualitative↔ compare
- Participatory Action ResearchQualitative↔ compare
- PhenomenologyQualitative↔ compare