Most doctoral students choosing a concept analysis method choose Walker and Avant, and most choose it for the wrong reason: because it is the method they have seen most often, or because its eight numbered steps look manageable. Method selection by familiarity is exactly what a committee or examiner will question, because the choice between concept analysis methods is not a matter of convenience or habit. It is a philosophical decision about what a concept is, and the two dominant methods in nursing rest on fundamentally different answers to that question.
Walker and Avant treat a concept as a relatively stable entity with a set of definable attributes that mark out what does and does not belong to it. Rodgers treats a concept as dynamic, shaped by context, and continually evolving. These are not two routes to the same destination; they are two different views of what you are analyzing, and they produce different kinds of knowledge. Choosing between them means knowing which view fits your research aim, and being able to defend that choice on philosophical grounds rather than by appeal to popularity. This article sets out each method in full, compares them across the axes that actually distinguish them, gives you a rule for choosing, and identifies the errors that draw examiner criticism.
Concept analysis sits within the broader body of nursing theory work that a doctoral program expects you to command, and treating the method choice with the seriousness that body of work demands is what separates an analysis that contributes from one that merely follows a template.
Quick Answer:
The choice between Walker, Avant, and Rodgers is a philosophy-of-concepts decision. Walker and Avant, derived from Wilson's method, treat concepts as having definable attributes and use analyst-constructed cases (model, borderline, contrary) to arrive at an operational definition with empirical referents; choose it when your aim is a precise definition to support measurement or instrument development. Rodgers' evolutionary method treats concepts as context-dependent and changing, samples the literature inductively, and uses a real exemplar drawn from that literature to produce a contextual account and an agenda for further development; choose it when you aim to understand how a contested or emerging concept is used and is evolving. Justify the choice by its fit to your aim, not by which method is more common.
Two Methods, Two Views of a Concept
The reason method choice matters so much in concept analysis is that the method encodes a theory of concepts, and the theory shapes everything the analysis can conclude. Walker and Avant's approach descends from the work of the philosopher John Wilson, and it carries a broadly essentialist orientation: it treats a concept as something with defining attributes, features that are present when the concept applies and absent when it does not. The analytic task is to identify those attributes precisely enough to say what the concept is and to distinguish it from neighboring concepts.
Rodgers' evolutionary method rests on a different foundation, which he called a dispersion view of concepts. On this account, a concept is not a fixed entity with stable boundaries but a cluster of usage that shifts across disciplines and over time, so that the meaning of a concept in nursing today may differ from its meaning a decade ago or its meaning in an adjacent field. The analytic task is not to fix the concept's boundaries but to describe how it is actually used, how it has changed, and where it appears to be heading.
These two methods dominate doctoral nursing education to the near exclusion of others. A recent overview notes that teaching focuses mainly on Walker and Avant's method and Rodgers' evolutionary method, with the result that many students are unaware of the wider spectrum of approaches, which also includes the Schwartz-Barcott and Kim hybrid model, Chinn and Kramer's method, pragmatic utility, principle-based analysis, and semantic approaches. The dominance of the two classics is a fact worth knowing, but it is not a reason to choose one of them without understanding what you are choosing.
Walker and Avant: The Method in Full
Walker and Avant's approach proceeds through eight steps, and its structure is what makes it feel accessible, though the apparent simplicity conceals real demands at each stage. The steps are, in order: select the concept; determine the aims or purpose of the analysis; identify all the uses of the concept you can discover; determine the defining attributes; construct a model case; construct additional cases; identify antecedents and consequences; and define empirical referents.
The heart of the method is the movement from defining attributes to cases. The defining attributes are the cluster of features that appear repeatedly in the concept's use and mark out what the concept is. The cases then test and illustrate those attributes. The model case is a clear, paradigmatic instance that contains all the defining attributes; the additional cases, which include borderline, related, and contrary cases, probe the boundaries by presenting instances that contain some attributes but not others, or none at all. The analyst constructs these cases, built deliberately to display or withhold the attributes in question.
The method ends with empirical referents, which are the observable phenomena by which the presence of the concept can be recognized and, potentially, measured. This endpoint reveals what the method is built for: arriving at a definition precise enough that the concept can be operationalized, which is why the approach lends itself to work that will support instrument development or measurement. It is worth noting a nuance that is often lost in summaries: although the method is frequently described as positivist, Walker and Avant themselves have distanced their approach from strict positivism, reductionism, and a correspondence theory of truth. The essentialist leaning is real, but the caricature of the method as naively positivist is one its authors reject.
Rodgers' Evolutionary Method: The Method in Full
Rodgers' evolutionary method proceeds through six activities rather than numbered steps, and the difference in language is deliberate, because the activities are iterative rather than strictly sequential. As set out in the methodological account by Tofthagen and Fagerstrom on evolutionary concept analysis, the activities are: identify the concept along with its surrogate terms and related concepts; select an appropriate realm and sample for data collection; collect data on the concept's attributes, antecedents, consequences, and its contextual and temporal variation; analyze the data; identify an exemplar of the concept; and identify implications and hypotheses for further development.
Two features distinguish this method sharply from Walker and Avant's. The first is the treatment of the literature. Rather than attempting to identify every use of the concept, the evolutionary method samples a defined realm of literature inductively and purposively, selecting a body of work through which the concept's usage and change can be traced. The analysis attends to context and time, treating the way the concept varies across settings and shifts across years not as noise to be cleared away but as the very object of study.
The second distinguishing feature is the exemplar. Where Walker and Avant construct cases, Rodgers requires a real exemplar drawn from the actual literature, an instance of the concept in genuine use rather than one built by the analyst to display particular attributes. The method ends not with empirical referents for measurement but with implications and hypotheses for the concept's further development, an agenda for where the concept might go next. This endpoint reveals what the evolutionary method is built for: clarifying a concept that is contested, emerging, or in flux, and situating it in its disciplinary and historical context.
Table 1: The Two Methods, Step by Step
Walker and Avant (8 steps), | Rodgers' evolutionary method (6 iterative activities) |
|---|---|
1. Select the concept | 1. Identify the concept, its surrogate terms, and related concepts |
2. Determine the aims or purpose of the analysis | 2. Select an appropriate realm and sample for data collection |
3. Identify all uses of the concept | 3. Collect data on attributes, antecedents, consequences, and contextual and temporal variation |
4. Determine the defining attributes | 4. Analyze the data to characterize the concept |
5. Construct a model case | 5. Identify an exemplar: a real case drawn from the literature |
6. Construct additional cases (borderline, related, contrary, invented, illegitimate) | 6. Identify implications and hypotheses for further development |
7. Identify antecedents and consequences | Activities are iterative, not strictly sequential; the analyst may revisit earlier activities |
8. Define empirical referents | Endpoint is an agenda for the concept's continued development, not a fixed definition. |
The Comparison That Matters
Placing the two methods side by side on the axes that actually distinguish them makes the choice between them clearer than any general description can. They differ, first, in their philosophy of concepts: Walker and Avant lean toward an entity view in which a concept has definable attributes, while Rodgers adopts a dispersion view in which a concept is a shifting cluster of usage. They differ in their treatment of time and context: for Walker and Avant, these are largely held constant, while for Rodgers, they are central and defining.
They differ, too, in how they handle cases and literature. Walker and Avant construct cases, building models, borderline, and contrary instances to display the attributes; Rodgers selects a real exemplar from the literature. Walker and Avant aim to identify all the uses of the concept; Rodgers samples a realm inductively. And they differ in what they produce and therefore in what claims they support. Walker and Avant yield an operational definition and empirical referents, which support measurement and instrument development. Rodgers yields a contextual account of the concept and an agenda for its further development, which supports the clarification of a concept that is evolving or contested. A published analysis of academic resilience in nursing students illustrates that the two can even be combined within a single study, using Rodgers for the attributes and antecedents and Walker and Avant for the model case and empirical referents. However, doing so requires understanding that each method is contributing a different kind of output rather than treating them as interchangeable.
Unsure which concept analysis method fits your aim? |
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The method has to follow from your research aim, and choosing it well is what makes the analysis defensible. A specialist can help you match the method to your aim, whether that is an operational definition for measurement or an account of an evolving concept, and build the philosophical justification your committee will expect. Tell us about your concept and aim, and you will have an itemized quote within 2 to 4 business hours, no obligation. |
The Choice Rule
The comparison resolves into a rule that is easy to state and defensible to a committee. Choose Walker and Avant when your aim is a precise operational definition and empirical referents, particularly when the concept analysis is groundwork for measurement or instrument development, and when the concept is stable enough that fixing its attributes is a coherent goal. The method's construction, from defining attributes through constructed cases to empirical referents, is built for exactly this purpose.
Choose Rodgers' evolutionary method when you aim to understand how a concept is actually used and how it is changing, particularly when the concept is contested, emerging, or evolving across disciplines, and when its variation across context and time is part of what you want to capture rather than something to eliminate. The method's inductive literature sampling, its attention to context and time, and its endpoint in an agenda for further development are built for this purpose.
The rule is stated in terms of aim because the aim is what a committee will ask you to justify. A student who says, "I chose Rodgers because my concept is emerging and contested, and I wanted to trace how its usage varies across the disciplines that use it," has given a defensible rationale. A student who says, "I chose Walker and Avant because it is the most common method," has not, and the difference is precisely the philosophical awareness the choice is meant to demonstrate. This is the kind of justification that the questions examiners ask about methodology are designed to probe, and a choice grounded in the fit between method and aim withstands that questioning in a way that a choice grounded in convention does not.
Building that justification into the methodology chapter itself, rather than leaving it implicit, is what turns a defensible choice into a defended one, and structured methodology support helps you set out the philosophical rationale in the form a committee expects to read it.
Method chosen, but need the analysis to hold up? |
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Once the method is chosen, the analysis has to apply it consistently: real exemplars where the method requires them, attention to context where the method demands it, and the right vocabulary throughout. A specialist can review your concept analysis against the commitments of your chosen method and flag the mismatches an examiner would catch. Send us your draft analysis, and you will have an itemized quote within 2 to 4 business hours, no obligation. |
When Neither Classic Is the Right Fit
Because Walker, Avant, and Rodgers dominate teaching so thoroughly, students often assume the choice is only between the two. It is not. The wider methodological literature describes a spectrum of approaches, and for certain aims, one of the less common methods is the better fit. Knowing they exist and being able to say why you did not choose them strengthens the justification for the method you did select.
Among the alternatives, the Schwartz-Barcott and Kim hybrid model combines a theoretical analysis of the literature with an empirical fieldwork phase, making it suitable when you want to ground the concept in observed practice rather than in the literature alone. Principle-based concept analysis, developed by Penrod and Hupcey, evaluates a concept against epistemological, pragmatic, linguistic, and logical principles, and suits a concept whose maturity across the literature is itself in question. Pragmatic utility, associated with Morse, assesses how useful a concept is for the discipline rather than fixing its attributes. Chinn and Kramer's approach and semantic analysis round out the set. None of these displaces the two classics for most doctoral work, but each exists because a particular research aim calls for it, and a student who can locate their own aim on this fuller map chooses more defensibly than one who sees only two options.
The point is not that you should reach for an unusual method to appear sophisticated. It is that the choice of any method, classic or not, should follow from the aim, and seeing the full range makes the fit between your aim and your chosen method easier to argue. A committee that hears you distinguish your choice from the alternatives you considered is hearing exactly the deliberateness that the method selection is meant to demonstrate.
The Errors That Draw Criticism
Concept analyses fail examination for a recognizable set of reasons, and most of them trace back to a mismatch between the method's philosophy and the way it was applied. Knowing these errors in advance is the surest way to avoid them.
Table 2: The Two Methods Compared Across the Axes That Matter
Axis | Walker and Avant | Rodgers' evolutionary method |
|---|---|---|
Philosophy of concepts | Entity leaning: a concept has definable attributes (derived from Wilson) | Dispersion view: a concept is a shifting cluster of usage |
Time and context | Largely held constant | Central and defining to the analysis |
Cases | Analyst-constructed: model, borderline, related, contrary | A real exemplar selected from the literature |
Literature sampling | Identify all uses of the concept | Inductive, purposive sample of a defined realm |
Output | Operational definition plus empirical referents | Contextual account plus an agenda for further development |
Claims it supports | Measurement and instrument development | Clarifying an evolving or contested concept |
The most common error is choosing a method by default and defending the choice by its popularity, which signals to an examiner that the philosophical basis of the method was never understood. Close behind it are errors specific to each method. In Walker and Avant's analyses, the model case is often built as a caricature, an implausibly perfect instance that displays every attribute so obviously that it illustrates nothing, when a genuine clarifying case should be realistic enough to be instructive. In Rodgers analyses, the most damaging error is omitting the temporal and contextual dimension altogether, producing a static account of attributes that could have come from any method and thereby discarding the entire point of choosing the evolutionary approach.
A subtler but revealing error is mixing the vocabularies of the two methods. The term empirical referents belongs to Walker and Avant; the terms surrogate terms and exemplar belong to Rodgers. A concept analysis that reaches for a Rodgers exemplar while also promising empirical referents, or that speaks of surrogate terms in a Walker and Avant framework, reveals that the writer has assembled the analysis from fragments of both methods without understanding the commitments of either. The way a concept analysis samples and represents its literature is also frequently criticized, and the discipline of moving from cataloguing sources to building an argument from them, discussed in the analysis of how to move from description to argument, applies to the literature work at the heart of any concept analysis.
Frequently Asked Questions
What is the main difference between Rodgers, Walker, and Avant?
They rest on different views of what a concept is. Walker and Avant treat a concept as having definable attributes that mark out what does and does not belong to it. They aim at a precise operational definition supported by empirical referents. Rodgers treats a concept as dynamic and context-dependent, changing across disciplines and over time, and aims at a contextual account of how the concept is used and evolving. The difference is philosophical, and it shapes what each method can conclude.
Which method should I choose for my concept analysis?
Choose based on your research aim. If you need a precise operational definition, especially as groundwork for measurement or instrument development, and your concept is stable enough to be defined, Walker and Avant fit. If you want to understand how a contested or emerging concept is used and how it is changing across context and time, Rodgers' evolutionary method fits. State the choice in terms of your aim, because that is what a committee will ask you to justify.
Can I use both methods in one study?
Yes, but only if you understand that each contributes a distinct kind of output. Some published analyses use Rodgers to identify attributes, antecedents, and consequences, and Walker and Avant to construct a model case and empirical referents. This can work, but it requires treating the two methods as doing different jobs rather than as interchangeable, and it requires a clear rationale for why both are needed, since a committee will expect you to justify the combination rather than assume it.
Why is choosing Walker and Avant "because it is common" a problem?
Because method choice in concept analysis is a philosophical decision, and defending it by popularity shows that the philosophical basis was not understood. The two methods rest on different views of what a concept is, and choosing one commits you to that view. An examiner asks you to justify the choice precisely to test whether you grasp what the method assumes. A rationale grounded in the fit between the method and your aim demonstrates that understanding; an appeal to how common the method is does not.
What are the most common errors examiners criticize?
Choosing a method by default without a philosophical rationale; constructing a Walker and Avant model case as an implausible caricature rather than a realistic clarifying instance; omitting the temporal and contextual dimension from a Rodgers analysis, which discards the whole point of the evolutionary method; and mixing the vocabularies of the two methods, such as promising empirical referents alongside a Rodgers exemplar. Each of these signals that the method's commitments were not understood, which is the underlying problem examiners are testing for.
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Choosing With Confidence
The choice between Rodgers, Walker, and Avant is not a formality to be settled by habit, and treating it as one is the source of most of the trouble concept analyses run into. The two methods answer the question of what a concept is in different ways, and each answer suits a different kind of research aim. Walker and Avant serve the analysis that needs a precise, operationalizable definition; Rodgers serves the analysis that needs to understand a concept in flux. Neither is better in general, and the student who understands this is already ahead of the one still asking which method is best.
What a committee wants to see is not that you picked the fashionable method but that you chose deliberately, matched the method to your aim, and can defend the fit on philosophical grounds. Get that right, and the concept analysis rests on a foundation that holds under questioning. Get it wrong, by choosing on familiarity and applying the method against its own commitments, and no amount of careful execution will repair a choice that was never justified.
If you would like help choosing and applying the right concept analysis method for your aim, from matching the method to your concept to building the justification your committee expects, tell us about your project, and you will have an itemized quote within 2 to 4 business hours, no obligation.
Concept analysis is one strand of the wider theoretical work a nursing degree asks of you, and where it sits within that work is set out across the nursing theory and concept analysis service, which supports this work from method selection through to a defensible analysis.
