The Research Gap (Literature Gap)
If you’re just starting out in research, chances are you’ve heard about the elusive research gap (also called a literature gap). In this post, we’ll explore the tricky topic of research gaps. We’ll explain what a research gap is, look at the four most common types of research gaps, and unpack how you can go about finding a suitable research gap for your dissertation, thesis or research project.
Overview: Research Gap 101
What (exactly) is a research gap?
Well, at the simplest level, a research gap is essentially an unanswered question or unresolved problem in a field, which reflects a lack of existing research in that space. Alternatively, a research gap can also exist when there’s already a fair deal of existing research, but where the findings of the studies pull in different directions, making it difficult to draw firm conclusions.
For example, let’s say your research aims to identify the cause (or causes) of a particular disease. Upon reviewing the literature, you may find that there’s a body of research that points toward cigarette smoking as a key factor – but at the same time, a large body of research that finds no link between smoking and the disease. In that case, you may have something of a research gap that warrants further investigation.
Now that we’ve defined what a research gap is – an unanswered question or unresolved problem – let’s look at a few different types of research gaps.
Types of research gaps
While there are many different types of research gaps, the four most common ones we encounter when helping students at Grad Coach are as follows:
- The classic literature gap
- The disagreement gap
- The contextual gap, and
- The methodological gap
1. The Classic Literature Gap
First up is the classic literature gap. This type of research gap emerges when there’s a new concept or phenomenon that hasn’t been studied much, or at all. For example, when a social media platform is launched, there’s an opportunity to explore its impacts on users, how it could be leveraged for marketing, its impact on society, and so on. The same applies for new technologies, new modes of communication, transportation, etc.
Classic literature gaps can present exciting research opportunities, but a drawback you need to be aware of is that with this type of research gap, you’ll be exploring completely new territory. This means you’ll have to draw on adjacent literature (that is, research in adjacent fields) to build your literature review, as there naturally won’t be very many existing studies that directly relate to the topic. While this is manageable, it can be challenging for first-time researchers, so be careful not to bite off more than you can chew.
2. The Disagreement Gap
As the name suggests, the disagreement gap emerges when there are contrasting or contradictory findings in the existing research regarding a specific research question (or set of questions). The hypothetical example we looked at earlier regarding the causes of a disease reflects a disagreement gap.
Importantly, for this type of research gap, there needs to be a relatively balanced set of opposing findings. In other words, a situation where 95% of studies find one result and 5% find the opposite result wouldn’t quite constitute a disagreement in the literature. Of course, it’s hard to quantify exactly how much weight to give to each study, but you’ll need to at least show that the opposing findings aren’t simply a corner-case anomaly.
3. The Contextual Gap
The third type of research gap is the contextual gap. Simply put, a contextual gap exists when there’s already a decent body of existing research on a particular topic, but an absence of research in specific contexts.
For example, there could be a lack of research on:
- A specific population – perhaps a certain age group, gender or ethnicity
- A geographic area – for example, a city, country or region
- A certain time period – perhaps the bulk of the studies took place many years or even decades ago and the landscape has changed.
The contextual gap is a popular option for dissertations and theses, especially for first-time researchers, as it allows you to develop your research on a solid foundation of existing literature and potentially even use existing survey measures.
Importantly, if you’re gonna go this route, you need to ensure that there’s a plausible reason why you’d expect potential differences in the specific context you choose. If there’s no reason to expect different results between existing and new contexts, the research gap wouldn’t be well justified. So, make sure that you can clearly articulate why your chosen context is “different” from existing studies and why that might reasonably result in different findings.
4. The Methodological Gap
Last but not least, we have the methodological gap. As the name suggests, this type of research gap emerges as a result of the research methodology or design of existing studies. With this approach, you’d argue that the methodology of existing studies is lacking in some way, or that they’re missing a certain perspective.
For example, you might argue that the bulk of the existing research has taken a quantitative approach, and therefore there is a lack of rich insight and texture that a qualitative study could provide. Similarly, you might argue that existing studies have primarily taken a cross-sectional approach, and as a result, have only provided a snapshot view of the situation – whereas a longitudinal approach could help uncover how constructs or variables have evolved over time.
Practical Examples
Let’s take a look at some practical examples so that you can see how research gaps are typically expressed in written form. Keep in mind that these are just examples – not actual current gaps (we’ll show you how to find these a little later!).
Context: Healthcare
Despite extensive research on diabetes management, there’s a research gap in terms of understanding the effectiveness of digital health interventions in rural populations (compared to urban ones) within Eastern Europe.
Context: Environmental Science
While a wealth of research exists regarding plastic pollution in oceans, there is significantly less understanding of microplastic accumulation in freshwater ecosystems like rivers and lakes, particularly within Southern Africa.
Context: Education
While empirical research surrounding online learning has grown over the past five years, there remains a lack of comprehensive studies regarding the effectiveness of online learning for students with special educational needs.
As you can see in each of these examples, the author begins by clearly acknowledging the existing research and then proceeds to explain where the current area of lack (i.e., the research gap) exists.
How To Find A Research Gap
Now that you’ve got a clearer picture of the different types of research gaps, the next question is of course, “how do you find these research gaps?”.
Well, we cover the process of how to find original, high-value research gaps in a separate post. But, for now, I’ll share a basic two-step strategy here to help you find potential research gaps.
As a starting point, you should find as many literature reviews, systematic reviews and meta-analyses as you can, covering your area of interest. Additionally, you should dig into the most recent journal articles to wrap your head around the current state of knowledge. It’s also a good idea to look at recent dissertations and theses (especially doctoral-level ones). Dissertation databases such as ProQuest, EBSCO and Open Access are a goldmine for this sort of thing. Importantly, make sure that you’re looking at recent resources (ideally those published in the last year or two), or the gaps you find might have already been plugged by other researchers.
Once you’ve gathered a meaty collection of resources, the section that you really want to focus on is the one titled “further research opportunities” or “further research is needed”. In this section, the researchers will explicitly state where more studies are required – in other words, where potential research gaps may exist. You can also look at the “limitations” section of the studies, as this will often spur ideas for methodology-based research gaps.
By following this process, you’ll orient yourself with the current state of research, which will lay the foundation for you to identify potential research gaps. You can then start drawing up a shortlist of ideas and evaluating them as candidate topics. But remember, make sure you’re looking at recent articles – there’s no use going down a rabbit hole only to find that someone’s already filled the gap 🙂
Let’s Recap
We’ve covered a lot of ground in this post. Here are the key takeaways:
- A research gap is an unanswered question or unresolved problem in a field, which reflects a lack of existing research in that space.
- The four most common types of research gaps are the classic literature gap, the disagreement gap, the contextual gap and the methodological gap.
- To find potential research gaps, start by reviewing recent journal articles in your area of interest, paying particular attention to the FRIN section.
If you’re keen to learn more about research gaps and research topic ideation in general, be sure to check out the rest of the Grad Coach Blog. Alternatively, if you’re looking for 1-on-1 support with your dissertation, thesis or research project, be sure to check out our private coaching service.
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This post is REALLY more than useful, Thank you very very much
Very helpful specialy, for those who are new for writing a research! So thank you very much!!
I found it very helpful article.
Thank you.
great one
it very good but what need to be clear with the concept is when di we use research gap before we conduct aresearch or after we finished it ,or are we propose it to be solved or studied or to show that we are unable to cover so that we let it to be studied by other researchers ?
Just at the time when I needed it, really helpful.
Very helpful and well-explained. Thank you
VERY HELPFUL
We’re very grateful for your guidance, indeed we have been learning a lot from you , so thank you abundantly once again.
hello brother
could you explain to me this question
explain the gaps that researchers are coming up with ?
Am just starting to write my research paper. your publication is very helpful. Thanks so much
How to cite the author of this?
your explanation very help me for research paper. thank you
Very important presentation. Thanks.
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Best Ideas. Thank you.
I found it’s an excellent blog to get more insights about the Research Gap. I appreciate it!
Kindly explain to me how to generate good research objectives.
This is very helpful, thank you
How to tabulate research gap
Very helpful, thank you.
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This article is really helpfull in discussing how will we be able to define better a research problem of our interest. Thanks so much.
Reading this just in good time as i prepare the proposal for my PhD topic defense.
Very helpful
Thanks a lot.
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This was very timely. Kudos
Great one! Thank you all.
Thank you very much.
This is so enlightening. Disagreement gap. Thanks for the insight.
How do I Cite this document please?
Research gap about career choice given me
Example bro?
I found this information so relevant as I am embarking on a Masters Degree. Thank you for this eye opener. It make me feel I can work diligently and smart on my research proposal.
This is very helpful to beginners of research. You have good teaching strategy that use favorable language that limit everyone from being bored. Kudos!!!!!
This plat form is very useful under academic arena therefore im stil learning a lot of informations that will help to reduce the burden during development of my PhD thesis
This information is beneficial to me.
Insightful…
I have found this quite helpful. I will continue using gradcoach for research assistance
Doing research in PhD accounting, my research topic is: Business Environment and Small Business Performance: The Moderating Effect of Financial Literacy in Eastern Uganda. I am failing to focus the idea in the accounting areas. my supervisor tells me my research is more of in the business field. the literature i have surveyed has used financial literacy as an independent variable and not as a moderator. Kindly give me some guidance here. the core problem is that despite the various studies, small businesses continue to collapse in the region. my vision is that financial literacy is still one of the major challenges hence the need for this topic.
Zabardast.
An excellent work, it’s really helpful
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