Grounded Theory Research Method: Definition, Steps & Examples (2026)
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Grounded theory (GT) is a qualitative research methodology in which theory is built inductively from data through systematic coding, constant comparison, and theoretical sampling. Unlike deductive research that tests existing theories, grounded theory lets theory emerge from the data itself. It was developed by sociologists Barney Glaser and Anselm Strauss in 1967 and remains one of the most rigorous qualitative research approaches available.
What Is Grounded Theory?
The defining feature of grounded theory is that it generates theory from data — the theory is literally "grounded" in what participants say, do, and experience. Researchers start without a preconceived theoretical framework; instead, they immerse themselves in data and allow categories, patterns, and eventually a theory to emerge through systematic analysis.
Grounded theory is especially appropriate when exploring processes — how do patients cope with chronic illness? How do managers navigate organisational change? How do teachers adapt to new curricula? — where existing theory is inadequate or absent.
Grounded Theory at a Glance
The Discovery of Grounded Theory
Theory emerges from data
Interviews, observations, documents
Open → Axial → Selective
Guided by emerging theory
Explains a process or phenomenon
The Three Types of Grounded Theory
| Type | Founders | Philosophy | Key Feature |
|---|---|---|---|
| Glaserian (Classic) GT | Barney Glaser | Positivist/Objectivist | Theory emerges with minimal researcher imposition; uses theoretical codes |
| Straussian GT | Strauss & Corbin | Post-positivist | Structured axial coding paradigm; conditions, actions, consequences |
| Constructivist GT | Kathy Charmaz | Interpretivist/Constructivist | Researcher co-constructs theory with participants; emphasises reflexivity |
Step-by-Step Grounded Theory Process
Step 1: Research Question & Initial Data Collection
Begin with a broad, open research question about a process or experience. Conduct initial interviews or gather documents. Avoid reviewing too much literature before fieldwork to prevent premature sensitising concepts (in classical GT).
Step 2: Open (Initial) Coding
Break transcripts into segments and label each segment with a code that captures its meaning. Codes should be active and process-oriented. Example: "negotiating uncertainty", "seeking validation", "managing time pressure".
Step 3: Constant Comparison
Simultaneously compare data to data, data to codes, codes to codes, and codes to categories. This process identifies similarities and differences that shape emerging categories.
Step 4: Theoretical Sampling
Collect new data specifically to develop and saturate emerging theoretical categories. Sampling decisions are guided by the theory — you sample to fill gaps, not randomly.
Step 5: Axial (Focused) Coding
Identify relationships between categories. In Strauss & Corbin's approach, use the axial coding paradigm: causal conditions → phenomenon → context → intervening conditions → strategies → consequences.
Step 6: Theoretical Saturation
Continue data collection until new data produces no new codes or categories. This is the stopping criterion in GT — not a predetermined sample size.
Step 7: Selective Coding & Core Category
Identify the core category — the central concept that integrates all other categories. Write the theory as a narrative that explains how the core category relates to other categories.
Step 8: Memo Writing
Throughout the process, write theoretical memos to capture ideas about categories, relationships, and emerging theory. Memos are the building blocks of the final theory.
Grounded Theory Dissertation Tip
When writing your grounded theory dissertation, justify your choice of GT variant (Glaserian, Straussian, or Constructivist) in your methodology chapter. Explain why the phenomenon you are studying lacks adequate theoretical explanation — this is your core justification for using GT. Also address the debate between Glaser and Strauss if your examiners may be familiar with the literature.
Writing a grounded theory dissertation? Our qualitative research experts at Thesis Ace Writers specialise in GT methodology, coding support, and writing up grounded theory findings chapters.
Grounded Theory Examples in Research
| Discipline | Example GT Study | Core Category |
|---|---|---|
| Nursing | How nurses manage moral distress in ICU settings | "Surviving moral crisis through adaptive coping" |
| Management | How entrepreneurs navigate failure and recovery | "Reconstructing identity after business failure" |
| Education | How first-generation university students find belonging | "Becoming legitimate: negotiating academic identity" |
| Social Work | How survivors of domestic violence rebuild autonomy | "Reclaiming self through networked support" |
Related Reading from Thesis Ace Writers
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Frequently Asked Questions
Click a question to expand the answer.
Grounded theory (GT) is a qualitative research methodology in which theory is generated inductively from data, rather than being imposed before data collection. Developed by Barney Glaser and Anselm Strauss (1967), it involves systematic data collection, coding, memo-writing, and constant comparison until a substantive theory emerges that is 'grounded' in the data. It is widely used in nursing, social work, management, and education research.
The three main types are: (1) Glaserian (Classic) Grounded Theory — Glaser's original approach; emphasises allowing theory to emerge naturally without imposing conceptual frameworks; uses theoretical codes freely. (2) Straussian Grounded Theory — Strauss & Corbin's approach; uses a structured axial coding paradigm (conditions, context, action/interaction, consequences). (3) Constructivist Grounded Theory — Charmaz's approach; acknowledges researcher's role in constructing theory; more reflexive and interpretive.
Theoretical saturation is reached when new data no longer produces new codes, categories, or insights — the emerging theory is sufficiently developed and no new conceptual properties are emerging. It is the criterion for stopping data collection in grounded theory. Saturation is reached iteratively through simultaneous data collection and analysis, not at a predefined sample size.
Grounded theory uses three main coding phases: (1) Open coding (initial/substantive coding) — breaking data into segments and labelling concepts; (2) Axial coding (focused coding) — identifying relationships between categories and sub-categories; (3) Selective coding — identifying the core category that integrates all other categories into a coherent theory. In Charmaz's constructivist GT, these are simplified as initial coding and focused coding.
Both involve coding qualitative data, but differ in purpose. Grounded theory aims to generate a substantive theory or model to explain a process or phenomenon — the goal is theoretical development. Thematic analysis identifies and describes patterns (themes) in data without necessarily building a theory. Grounded theory also uses constant comparison, theoretical sampling, and theoretical saturation, which are not features of thematic analysis.