PhD research paradigms in the social sciences, made simple (for qualitative researchers)
If you are doing a qualitative PhD and you have ever felt a jolt of panic when someone says, “What’s your paradigm?”, you are not alone.
It usually shows up in very specific moments.
You are drafting your methodology chapter and you realise you can describe your methods, but you cannot quite explain the assumptions underneath them.
You are reading papers that sound confident about “knowledge” and “truth”, and you cannot tell why they feel so different to the way you think.
Or your supervisor says something like, “You need to be clearer about your philosophical position”, and you nod while thinking, “I do not know what that means”.
Paradigms are not an academic secret club. They are simply a way of describing the research “stance” you are taking, so that your reader understands how you are approaching the world and how you are making claims from your data.
This post will help you do three things:
First, understand what a research paradigm is in plain language.
Second, recognise the main paradigms you will see in the social sciences.
Third, identify your own paradigmatic leaning and contrast it with others, so you can write about it clearly and defensibly in your thesis.
What is a research paradigm?
A research paradigm is your research worldview. It is the set of assumptions that shape what you think counts as reality, what you think counts as knowledge, and what you think research is for.
That sounds abstract until you feel it in practice.
Here is a quick metaphor that actually helps.
Think of paradigms like cooking styles. Not because research is “just vibes”, but because cooking reveals something important: two people can aim for a good meal and still use very different rules for deciding what “good” looks like.
Some cooks want precision and repeatability. Others want depth, interpretation, and responsiveness. Some want to understand the culture and the conditions underneath the dish. Some want to do whatever works to feed the people in front of them.
Same kitchen. Different assumptions.
That is paradigms.
Why qualitative PhD students get stuck here
Most qualitative researchers do not struggle because they cannot understand the definitions. They struggle because paradigms sit underneath everything. They are not a separate section you add at the end. They shape your research questions, your design choices, your relationship with participants, and the kinds of claims you can responsibly make.
So the goal is not to pick a label that sounds smart.
The goal is to be able to say, with calm confidence: “This is how I approached reality and knowledge in this study, and this is why my method makes sense.”
The five paradigms you are most likely to encounter
Positivism
Positivism is the strict recipe follower.
It assumes there is one reality “out there” that can be measured objectively, and that good research aims to minimise interpretation. Truth is something you discover through observation, measurement, and replication.
In the social sciences, this often shows up in research that prioritises quantification, prediction, and generalisation. It is not “better” than qualitative work. It is simply built for different kinds of questions.
If your work is qualitative and interpretive, positivism often feels like it is speaking a different language. That is because it is.
Post-positivism
Post-positivism still values measurement and rigour, but it is more humble about certainty.
It recognises that researchers are never fully neutral, that measurement is imperfect, and that claims are always provisional. You still aim for objectivity, but you acknowledge limitations and bias more explicitly.
You will often see post-positivism in applied social research where people want strong evidence but accept that human life is messy.
Interpretivism
Interpretivism is cooking by tasting as you go.
It assumes that social reality is made meaningful through people’s interpretations, and that research should focus on understanding experience, meaning, context, and perspective.
This is where many qualitative PhD projects naturally sit, especially those exploring identity, sense-making, organisational culture, belonging, stigma, or lived experience. Your data is not treated as a mirror of objective reality. It is treated as an account of meaning that must be interpreted in context.
If you are doing interviews and your aim is to understand how people make sense of something, interpretivism is often the paradigmatic home that feels most natural.
Critical realism
Critical realism asks a different kind of question.
It says: yes, there is a reality that exists beyond our perceptions, but our access to that reality is always filtered through language, context, and social structures.
Critical realism is often attractive to qualitative researchers who want to keep the depth of interpretation while also being able to talk about power, institutions, systems, and material conditions.
It lets you say something like: participants’ experiences matter deeply, and those experiences are also shaped by wider structures that are not always visible at the surface.
If you find yourself constantly thinking “Yes, but what is driving this underneath?”, you might be leaning this way.
Pragmatism
Pragmatism is the “make dinner with what works” approach.
It is less concerned with philosophical purity and more concerned with usefulness. Pragmatists choose methods that best answer the research question and often combine approaches when needed.
Pragmatism is common in applied contexts such as education, health, business, and policy-facing research. If your project is oriented toward solving a practical problem, pragmatic reasoning often shows up naturally.
How to identify your paradigmatic leaning
You do not have to pick a paradigm like you are choosing a Hogwarts house.
What you need is a clear leaning that fits the kind of knowledge you are trying to produce. Here are three questions that usually reveal it.
First, what are you treating as “real” in your study? Are you focusing on measurable outcomes, or on lived experience and meaning, or on underlying structures shaping both?
Second, what counts as good evidence for you? Is it reliability and replicability, or depth and richness, or explanatory power that connects experience to wider mechanisms?
Third, what are you trying to do with your research? Are you testing, understanding, explaining, critiquing, changing, informing practice?
Most qualitative PhDs land somewhere around interpretivism, critical realism, or pragmatism. The key is that your stance matches your method and the claims you make.
How to contrast paradigms in your methodology without turning it into a philosophy essay
You do not need a long section that summarises every paradigm you have ever heard of. You need a short contrast that shows you understand the alternatives and can explain why your stance makes sense.
A simple way to do it is to include one paragraph that signals what you are not doing.
For example, an interpretivist qualitative study might say, in plain language, that it is not aiming for statistical generalisation or a single objective truth, but for contextual understanding of meaning and experience.
A critical realist qualitative study might explain that it values lived experience, but also attends to underlying social structures and mechanisms that shape those experiences.
A pragmatic mixed-methods study might explain that it is not committed to one philosophical position in the abstract, but chooses methods based on what will best answer the research question.
That is enough. The contrast does not need to be combative. It just needs to be clear.
A quick warning about the most common mistake
The most common paradigms mistake is trying to borrow the language of one paradigm while doing the work of another.
For example, presenting an interpretive interview study as if it is trying to “prove” a hypothesis, or using quantitative language like “this shows that X causes Y” when the data can only support meaning-based interpretation.
This is one of the reasons paradigms matter. They keep your claims aligned with your method.
Coherence matters
Paradigms are not there to make your PhD sound more academic. They are there to make your reasoning easier to follow.
Once your foundations are clear, your methodology becomes simpler to write, your analysis becomes easier to justify, and your discussion feels more confident because you understand what kind of claims your research can responsibly make.
If you are ready to get properly clear on your foundations, including how paradigms connect to ontology, epistemology, conceptual frameworks, and theoretical positioning, my Conceptual and Theoretical Foundations Guide walks you through that step-by-step.
It is designed for qualitative researchers who want to explain their stance clearly, without waffle, and without feeling like they need a philosophy degree to write a methodology chapter. Click here for more details.
