So sánh phương pháp

	Case Study Biểu hiện Trực quan	Nghiên cứu Hành động Có sự tham gia (PAR)
Lĩnh vực	Định tính	Định tính
Họ	Process / pipeline	Process / pipeline
Năm ra đời	2002 (photo elicitation formalised); integrated approach emerged 2000s–2010s	1940s (Lewin); PAR as distinct tradition formalised ~1970s–1980s
Người khởi xướng	Douglas Harper (photo elicitation); Robert K. Yin (case study framework)	Kurt Lewin (action research foundations, 1940s); systematised for participatory contexts by Orlando Fals Borda, Paulo Freire, and William Foote Whyte
Loại	Qualitative research design	Qualitative research method
Công trình gốc	Harper, D. (2002). Talking about pictures: A case for photo elicitation. Visual Studies, 17(1), 13–26.	Kemmis, S., McTaggart, R., & Nixon, R. (2014). The Action Research Planner: Doing Critical Participatory Action Research. Springer.
Tên gọi khác	photo elicitation case study, image-based case study, visual methods case study, elicitation-based case study	PAR, community-based participatory research, collaborative action research, participatory inquiry
Liên quan	5	6
Tóm tắt	Visual elicitation case study is a qualitative design that embeds photo or image elicitation within a case study framework. Participants respond to photographs, drawings, or other visual materials during in-depth interviews, generating richer and often unexpected data than verbal questioning alone. The case study structure then situates these image-prompted accounts within a bounded real-world context — an individual, organization, community, or event — enabling a holistic, detailed understanding of the case.	Participatory Action Research (PAR) is a qualitative, community-centred methodology in which researchers and community members collaborate as co-investigators to identify a shared problem, take deliberate action, observe outcomes, and reflect critically on results — cycling iteratively until meaningful change is achieved. Unlike conventional research that studies people from the outside, PAR treats participants as active agents who co-own the research process, the knowledge produced, and the practical interventions that follow.