Case Study Methodology for Australian Postgraduate Research

Dr Emily Carter · 2024-05-10 · 8 min read · Research Methods

How to design, conduct, and write up case study research that meets Australian academic standards.

Introduction

Case study methodology is widely used across Australian postgraduate research, particularly in education, business, law, health, and social sciences. Despite its popularity, case study research is often poorly understood and weakly justified. This guide helps you design, conduct, and write up a rigorous case study.

What Is a Case Study?

A case study is an in-depth investigation of a particular "case" — a person, group, organisation, event, program, or phenomenon — within its real-world context. The defining feature is that the boundaries between the case and its context are not clearly defined, requiring the researcher to study the case in situ.

When to Use Case Study Methodology

Case studies are appropriate when:

  • Your research question asks "how" or "why"
  • You want to understand a contemporary phenomenon in depth
  • You cannot or do not want to manipulate variables
  • Context is important to understanding the phenomenon
  • Multiple data sources are available

    • Key Methodological Frameworks

    Robert Yin (Positivist/Post-Positivist)

  • Emphasises rigorous design, multiple sources of evidence, and replication logic
  • Distinguishes between exploratory, descriptive, and explanatory case studies
  • Focuses on construct validity, internal validity, external validity, and reliability
  • Most cited case study methodologist

    • Robert Stake (Interpretivist)

  • Emphasises understanding and meaning
  • Distinguishes between intrinsic, instrumental, and collective case studies
  • Focuses on naturalistic generalisation
  • Values the researcher's interpretation and the uniqueness of the case

    • Sharan Merriam (Pragmatist)

  • Combines elements of Yin and Stake
  • Emphasises the bounded nature of the case
  • Practical, accessible approach
  • Popular in education research

    • **Choose your framework and justify it** in your methodology chapter. Don't mix frameworks inconsistently.

    Types of Case Studies

    Single Case Study

    One case studied in depth. Appropriate when the case is:

  • **Critical:** Tests a well-formulated theory
  • **Extreme or unique:** Rare or unusual phenomenon
  • **Representative:** Typical of a broader population
  • **Revelatory:** Opportunity to study a previously inaccessible phenomenon
  • **Longitudinal:** Same case studied at different points in time

    • Multiple (Comparative) Case Study

    Two or more cases studied and compared. Provides:

  • Stronger evidence through replication
  • Cross-case analysis
  • Greater analytical generalisability
  • Typically 3–6 cases for a PhD

    • Data Collection

    Case studies typically use multiple data sources:

    Documents

  • Policies, reports, meeting minutes, media coverage
  • Organisational records and archives
  • Personal documents (diaries, letters, emails — with consent)

    • Interviews

  • Semi-structured interviews are most common
  • Multiple informants provide different perspectives
  • Record and transcribe for analysis

    • Observation

  • Direct observation of meetings, processes, or events
  • Field notes documenting what you see and hear
  • Participant observation (if you're embedded in the case)

    • Physical Artefacts

  • Tools, instruments, or objects relevant to the case
  • Environmental features and spatial arrangements

    • Archival Records

  • Statistical data, organisational charts, budgets
  • Service records, survey data

    • Analysis

    Within-Case Analysis

  • Analyse each case independently first
  • Use thematic analysis, pattern matching, or explanation building
  • Create a detailed case description or case narrative

    • Cross-Case Analysis

    (For multiple case studies)

  • Compare themes and patterns across cases
  • Use replication logic (Yin) or cross-case synthesis
  • Look for similarities and differences
  • Build explanations that account for variation

    • Ensuring Rigour

    Construct Validity

  • Use multiple sources of evidence (triangulation)
  • Establish a chain of evidence
  • Have key informants review draft case reports

    • Internal Validity (for explanatory cases)

  • Pattern matching
  • Explanation building
  • Addressing rival explanations

    • External Validity

  • Use replication logic across multiple cases
  • Clearly define the scope and boundaries of your case
  • Discuss analytical generalisability (not statistical generalisability)

    • Reliability

  • Maintain a case study database
  • Document your procedures in a case study protocol
  • Use an audit trail

    • Conclusion

    Case study methodology, when done well, produces rich, contextualised understanding of complex phenomena. The key is to choose an appropriate framework, justify your design choices, and maintain rigorous data collection and analysis procedures. DissertlyPro can assist with designing your case study methodology and writing up your findings.