03 · What You Need to Know
What Separates Grounded Theory From Thematic Analysis?
Grounded Theory Is a Methodology, Not Just a Coding Procedure
Grounded theory is a family of qualitative methodologies concerned with constructing an explanatory theoretical account grounded in systematically analyzed empirical material. Developed initially by Barney Glaser and Anselm Strauss, it has subsequently developed into several traditions with differing philosophical assumptions and analytical procedures.
Its defining features generally include concurrent data collection and analysis, constant comparison, analytical memo-writing, theoretical sampling, and the progressive development and integration of conceptual categories.
These procedures work together. Early analysis identifies questions that influence subsequent data collection. New comparisons refine conceptual categories. Analytical memos examine possible relationships, and the developing explanation guides further inquiry.
Consequently, choosing grounded theory as a research design involves more than selecting a particular coding strategy. It commits the researcher to a theory-building logic that should be visible throughout the study.
Thematic Analysis Identifies and Interprets Patterns of Meaning
Thematic analysis is a family of approaches for identifying, analyzing, and interpreting patterns across qualitative data. Depending on the approach, themes may be developed through inductive or deductive engagement with the material, or through a combination of both.
In reflexive thematic analysis, as articulated by Braun and Clarke, themes are not simply topics that repeatedly appear in interviews. They are patterns of shared meaning organized around a central concept and developed through the researcher's interpretive engagement with the dataset.
Other thematic analysis approaches, including some coding-reliability and codebook approaches, make different assumptions about coding procedures, researcher subjectivity, and the role of agreement among analysts. These approaches should not be treated as methodologically interchangeable.
Thematic analysis can support descriptive, interpretive, critical, or theoretically informed research. It may also generate conceptual insights. However, it does not ordinarily require the iterative theoretical sampling and integrated substantive theory development expected in a full grounded theory study.
What Are the Main Differences Between Grounded Theory and Thematic Analysis?
| Dimension |
Grounded theory |
Thematic analysis |
| Primary purpose |
Develop an explanatory theoretical account of a process, action, or social phenomenon. |
Develop and interpret meaningful patterns across qualitative data in relation to a research question. |
| Methodological status |
A family of research methodologies with interconnected design and analytical procedures. |
A family of analytical approaches that can operate within different research designs and theoretical orientations. |
| Sampling |
Often begins purposively and proceeds through theoretically directed sampling as categories develop. |
Sampling is determined by the research design and question; theoretical sampling is not a defining requirement. |
| Collection and analysis |
Typically iterative, with emerging analysis directing further data collection. |
May be iterative but can also analyze a dataset collected before formal coding begins. |
| Analytical focus |
Conceptual categories, their properties, relationships, and explanatory integration. |
Patterns of meaning developed and interpreted across the dataset. |
| Expected contribution |
An empirically grounded substantive theoretical explanation. |
A coherent thematic interpretation that addresses the research question. |
| Stopping logic |
Commonly considers theoretical saturation or sufficiency of central categories. |
Depends on the specific approach and research design; saturation is not universally required or appropriate. |
These distinctions describe methodological orientations rather than absolute boundaries. Both approaches can involve abstraction, interpretation, and conceptual development. Their differences concern the organization and purpose of those activities.
Why Is Coding Interview Transcripts Not Enough to Establish Grounded Theory?
Coding is an analytical operation, not proof of a particular methodology. Researchers using thematic analysis, qualitative content analysis, framework analysis, and grounded theory may all assign codes to segments of text.
Likewise, grouping codes into categories does not automatically produce a theory. A category such as limited institutional support may summarize an important issue, but it does not yet explain how institutional support shapes participants' actions, under which conditions its effects vary, or how it interacts with other processes.
Suddaby's methodological critique of grounded theory cautions against treating routine coding procedures as sufficient evidence of theory construction. Analytical techniques need to be connected to the epistemological assumptions and explanatory purpose of the research.
What Makes Grounded Theory Findings Theoretical Rather Than Merely Thematic?
Theoretical findings establish a conceptual explanation of how a phenomenon operates. They may identify processes, conditions, actions, consequences, and relationships that account for patterns in the data.
Consider a study of teachers' adoption of generative AI. Themes such as institutional pressure, ethical concerns, and professional development needs may offer a valuable account of participants' experiences.
A grounded theory analysis might instead develop an explanatory process in which teachers interpret institutional expectations, assess perceived risks to professional credibility, negotiate permissible practices, and revise their teaching decisions in response to feedback.
The difference is not that the second account uses more sophisticated vocabulary. It makes an explanatory claim about relationships and processes, and that claim must be supported through systematic conceptual comparison.
This distinction also clarifies what it means for grounded theory to produce a theory. A diagram containing several themes and arrows is not necessarily a theoretical contribution unless the relationships are analytically developed and empirically justified.
Why Are Theoretical Sampling and Iterative Analysis So Important?
In grounded theory, emerging analysis influences the next stage of inquiry. Researchers may initially recruit participants because they have relevant experience, but later sampling decisions should respond to developing conceptual questions.
For example, a researcher may discover that teachers who initially oppose AI-based assessment sometimes become advocates after gaining greater decision-making authority. That finding raises a question about the conditions under which professional autonomy changes responses to AI adoption.
The researcher can then use theoretical sampling to examine cases that clarify or challenge this emerging relationship.
By contrast, a thematic analysis of a completed interview dataset may examine the same relationship interpretively without recruiting additional participants. That is not necessarily a weakness. It reflects a different analytical design and evidential basis.
The distinction becomes consequential when researchers claim to have used theoretical sampling despite recruiting all participants before beginning analysis. Purposive sampling and theoretical sampling are not synonymous.
Can Grounded Theory Coding Be Used Within Thematic Analysis?
Yes, researchers can draw selectively on grounded theory techniques, including line-by-line coding, constant comparison, or memo-writing, without adopting grounded theory as the overall methodology.
Such choices should be explained accurately. A researcher might describe an inductive thematic analysis informed by constant comparative techniques, provided that this description reflects what was actually done and is compatible with the chosen thematic approach.
However, using a few grounded theory procedures does not justify claiming a complete grounded theory design. The distinction between grounded theory as an analytical resource and as a full methodology is important when writing the methods section.
Researchers should also avoid assembling incompatible procedures without explaining their methodological rationale. For example, adopting reflexive thematic analysis while simultaneously treating intercoder agreement as its principal validity criterion would require reconsideration because reflexive thematic analysis conceptualizes researcher interpretation differently from coding-reliability approaches.
Does Using Constant Comparison Automatically Make a Study Grounded Theory?
No. Comparing accounts, incidents, codes, or patterns can strengthen several qualitative approaches. In grounded theory, however, constant comparison is integrated with theoretical sampling, memo-writing, category development, and theory construction.
The relevant question is not simply whether comparisons occurred but what they accomplished. Did comparisons identify similarities among participants' statements, or did they progressively refine the conceptual relationships supporting an emerging explanation?
The methodological significance of constant comparison in grounded theory comes from its relationship to the broader theory-building process.
What If the Researcher Intended Grounded Theory but Produced Only Themes?
An intended design and an accomplished design are not always identical. A researcher may begin with a grounded theory objective but encounter constraints that prevent theoretical sampling, iterative collection, or sufficient category development.
The appropriate response is not automatically to rename the study. First, examine whether further analysis of existing material could strengthen conceptual integration or whether additional collection is feasible and ethically permissible.
If the completed study remains primarily thematic, the researcher should consider whether its actual research question, procedures, and findings support an alternative methodological description.
Reclassification may require revising the research question, methodology, analytical account, and claims about findings. It should not be a cosmetic substitution of one methodological label for another.
Nor should researchers imply that theoretical saturation occurred merely because the final interviews did not generate new themes. Theoretical saturation concerns the development of theoretical categories, not simply descriptive repetition.
Watch Out
A study does not become grounded theory because the researcher used open coding, called categories "emergent," or presented a conceptual diagram. Conversely, a study is not automatically disqualified from grounded theory because its results are organized under thematic headings. Evaluate the complete research process and the explanatory contribution.
04 · A Practical Example
How Can Two Studies Use Similar Interviews but Produce Different Types of Findings?
Hypothetical Example
Investigating How University Teachers Respond to Generative AI Assessment Policies
Two researchers investigate how university instructors respond to institutional rules governing generative AI in student assessment. Both conduct semistructured interviews and analyze participants' accounts. Their methodological choices, however, lead to different forms of knowledge.
Study A: Thematic analysis
The researcher interviews 18 instructors selected to provide varied perspectives. After examining the dataset, the researcher develops themes concerning policy ambiguity, perceived threats to academic integrity, disciplinary differences, and negotiation of professional responsibility.
Study A: Analytical contribution
The findings interpret patterned meanings in how instructors experience and respond to policy expectations. The study provides a coherent thematic account without claiming to have constructed a substantive grounded theory.
Study B: Grounded theory
The researcher begins with 10 instructors and analyzes interviews during collection. Initial categories suggest that perceived professional discretion influences policy responses. The researcher then selects additional participants and institutional contexts to examine circumstances that challenge or refine this relationship.
Study B: Theoretical development
Through repeated comparison and analytical memo-writing, the researcher develops a process explaining how instructors interpret policy expectations, assess professional risks, negotiate permissible actions, and stabilize or revise assessment practices.
Study B: Analytical contribution
The researcher presents an integrated substantive explanation, identifies the conditions under which the process varies, and documents how theoretical sampling and category development informed the final account.
Neither study is automatically superior. Study A may be better suited to understanding patterned meanings across instructors' accounts. Study B may be more appropriate when the objective is to construct an explanation of the process through which instructors negotiate institutional requirements.
The decisive difference is the relationship among the research question, sampling, analysis, and intended findings, not the mere presence of interview transcripts or coding tables.
