03 · What You Need to Know
What Preregistration Means When the Research Is Qualitative
The Apparent Conflict Comes From a Narrow View of Preregistration
Preregistration is frequently associated with quantitative hypothesis testing. Researchers specify a prediction, define variables, establish exclusions and sample size, and identify the statistical analysis before the relevant outcomes are known.
That model fits some research well. It does not describe all qualitative inquiry.
Haven and van Grootel examined whether preregistration could contribute to qualitative research despite common objections that qualitative studies often do not test hypotheses and that their designs can be flexible and interpretive. They argued that preregistration need not be limited to hypothesis specification and that methodological flexibility itself can be documented prospectively.
This reframes the problem. Qualitative researchers do not need to decide everything in advance. They need to decide which aspects of the research can usefully be recorded in advance and which aspects should remain responsive to what is learned during the study.
Qualitative Preregistration Records a Starting Point, Not a Fixed Destination
One useful way to think about qualitative preregistration is as a documented methodological starting point.
Before entering the field or collecting the relevant data, researchers already know some things. They may have a research question, theoretical orientation, sampling strategy, planned setting, interview approach, initial topic guide, data-management procedure, analytical methodology, and expectations about how decisions will be made.
Those elements can be recorded.
Other things may legitimately remain uncertain. Which participants become theoretically important, when sufficient conceptual depth has been reached, which themes emerge, how an interview guide develops, or which interpretations ultimately prove most productive may depend on engagement with the data.
The preregistration can acknowledge those uncertainties rather than disguising them.
Advance specification
Documents what the researchers know, intend, assume, and plan before engaging with the relevant evidence.
Methodological emergence
Allows sampling, questioning, analysis, interpretation, or other decisions to develop where the qualitative methodology legitimately requires responsiveness to the research process.
These are not necessarily competing principles.
You Do Not Need a Hypothesis to Preregister Qualitative Research
Qualitative studies often begin with research questions rather than testable directional hypotheses. Some approaches intentionally avoid imposing narrow predictions before researchers engage deeply with participants or data.
That does not prevent preregistration.
You can document the research question, objectives, phenomenon of interest, conceptual or theoretical orientation, and initial expectations where those expectations genuinely exist. You can also state explicitly that the study is exploratory, interpretive, inductive, abductive, deductive, or uses a combination of analytical logics, as appropriate.
Do not manufacture a hypothesis merely to satisfy an imagined preregistration requirement. That would make the record less accurate, not more rigorous.
The Qualitative Preregistration Template Was Designed Around This Problem
Haven and colleagues used a Delphi study with qualitative researchers to develop an agreement-based preregistration form for qualitative studies. The resulting template contains 13 items and was designed to preserve the ability of qualitative research to adapt and respond.
The template is available as a qualitative registration option through the Open Science Framework ecosystem. Its existence is useful evidence that qualitative preregistration need not consist of repurposing a form designed around conventional quantitative experiments.
The underlying principle matters more than any individual template: preregistration should reflect the decisions and flexibilities that are meaningful within the methodology.
Your Research Questions and Aims Can Be Recorded
State what you are trying to understand and how the question is currently framed.
For example, a study might begin by asking how first-generation university students describe their experiences of belonging during their first year. That is a meaningful prospective research question even though the researchers do not predict which themes will emerge.
If the question is expected to evolve, say so. You can describe the conditions or reasoning through which refinement may occur and later document important changes.
Your Sampling Logic Can Be Preregistered Without Fixing Every Participant
Qualitative sampling is often purposive rather than probability-based, and some methodologies intentionally allow sampling to evolve.
A preregistration can specify the population or setting of interest, initial eligibility criteria, recruitment strategy, rationale for case selection, anticipated sample range where meaningful, and principles that will guide further sampling.
For theoretical sampling, for example, it would be contradictory to pretend that every later participant can be identified before emerging concepts indicate where additional data are needed. The more useful preregistration would document that theoretical sampling is intended and explain how subsequent sampling decisions will be linked to the developing analysis.
Data-Collection Procedures Can Be Specified With Room for Adaptation
If you plan semi-structured interviews, focus groups, observations, document analysis, fieldwork, or another form of qualitative data collection, describe the initial approach.
You might preregister the setting, interview format, initial topic guide, approximate duration, recording procedure, transcription approach, or observational strategy where relevant.
You can simultaneously state that follow-up questions will respond to participants, that the topic guide may be refined after early interviews, or that field observations may redirect attention toward emerging phenomena.
The key is to make the intended flexibility explicit rather than retrospectively presenting the final procedure as though it had existed in exactly that form from the beginning.
The Analytical Approach Can Be Specified Without Predicting the Themes
A qualitative preregistration does not require you to know what the analysis will find.
You can specify the analytical methodology or broad strategy you intend to use, such as reflexive thematic analysis, grounded theory methodology, qualitative content analysis, interpretative phenomenological analysis, discourse analysis, or another approach, provided that label accurately reflects the study.
Where appropriate, explain how coding will proceed, whether coding is primarily inductive, deductive, or combined, how researchers will move from codes to broader interpretations, what software will be used if relevant, and how multiple researchers will participate in analysis.
The appropriate information depends heavily on the methodology. Procedures that make sense in one qualitative tradition should not be imposed universally on another.
Researcher Positioning and Prior Knowledge May Be Worth Recording
Qualitative researchers often recognize that interpretation is shaped by the researcher's relationship to the topic, participants, theoretical commitments, and prior experience.
Preregistration can provide an opportunity to document relevant positionality and expectations before data collection and analysis develop further.
This is not an attempt to eliminate subjectivity. Rather, it can make some of the researcher's starting position visible and provide a reference point for later reflexive discussion.
Haven and van Grootel specifically argued that preregistration could complement practices such as confirmability audits by creating a record of methodological development and researcher decisions.
Preregister the Flexibility You Expect
This may be the most important difference from a rigid interpretation of preregistration.
If you expect the interview guide to change, say so. If sampling will respond to emerging categories, describe that logic. If data collection and analysis will occur concurrently, record that. If the research question may be refined as conceptual understanding develops, acknowledge the possibility.
You can also state how important changes will be tracked, such as through memos, a decision log, protocol amendments, or versioned study materials.
This approach does not remove flexibility. It makes flexibility part of the documented design.
Not Every Qualitative Method Will Benefit Equally
Qualitative research is itself diverse. A structured qualitative content analysis may permit considerable advance specification. An emergent ethnography may require much greater adaptation. A phenomenological interview study and grounded theory project can have different relationships to sampling, prior theory, and analytical development.
It would therefore be misleading to ask whether “qualitative research” as a single category should be preregistered.
The broader question is whether preregistration adds useful transparency to the particular methodology and study.
Changes After Registration Are Not Evidence That the Qualitative Study Failed
A qualitative preregistration that expects no change may be poorly aligned with an adaptive methodology.
The qualitative preregistration work by Haven and colleagues explicitly emphasizes preserving flexibility to adapt and respond. The registration can therefore function as a baseline from which methodological development becomes visible.
If early interviews reveal that an important concept was missing from the original topic guide, adding questions about it may be entirely appropriate. If emerging analysis suggests recruiting participants with different experiences, the sampling strategy may evolve.
The relevant task is to document consequential changes and their rationale, particularly when those changes affect how readers understand the evidence.
Preregistration Should Not Be Used to Judge Qualitative Research by Quantitative Standards
One risk deserves particular attention. A transparency practice can become counterproductive if it is used to imply that methodological quality means fixing as many decisions as possible.
Flexibility can be a source of unacknowledged discretion, but it can also be an intentional and epistemologically coherent feature of qualitative inquiry.
The relevant standard is therefore not maximum constraint. It is transparency appropriate to the methodology.
Watch Out
Do not evaluate a qualitative preregistration by asking how closely it resembles a preregistered experiment. Ask whether it accurately documents the study's methodological starting point, identifies decisions that can genuinely be specified in advance, acknowledges legitimate areas of emergence, and creates a useful record of how the research develops.
