Search across guide titles, topics, keywords, and content throughout the Researcher's Field Guide.
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A research gap is a claim about the current state of knowledge, so it can become outdated. Before building a study around one, search specifically for research that could disprove, narrow, or change the gap you think you found.
Read Guide →No single person or group has universal authority to declare a research gap important. Importance is usually a reasoned judgment shaped by scientific significance, stakeholder needs, consequences of uncertainty, feasibility, ethics, resources, and the purpose for which priorities are being set.
Read Guide →A comparison should usually be explicit when the meaning of the research question depends on what an intervention, exposure, group, or condition is being compared with. But not every research question is comparative, and not every obvious comparator needs to make the wording cumbersome.
Read Guide →Novelty, originality, and contribution are related, but they are not interchangeable. Understanding the distinction helps you evaluate a research idea and explain precisely what your study adds.
Read Guide →Research does not have to invent every idea from scratch. Combining existing theories, concepts, methods, evidence, or perspectives can make a genuine contribution when the combination produces something meaningfully different from what the individual elements already provide.
Read Guide →A null result can be an original and important research contribution, but “not statistically significant” does not automatically mean “no effect.” Its value depends on the question, study design, precision, analysis, and what the result changes about the existing evidence.
Read Guide →A study can be genuinely novel and still not be worth doing. Newness matters only when the research also addresses a worthwhile question and can produce sufficiently credible, useful, or consequential knowledge.
Read Guide →You do not need to call your study “groundbreaking” or claim it is the first to make its contribution clear. The strongest novelty statements show what previous research establishes, what remains unresolved, what your study does differently, and why that difference matters.
Read Guide →Being the first to investigate a topic may establish one kind of novelty, but "first" is not a synonym for original, important, or valuable. What matters is what the study adds, how convincingly it adds it, and whether that addition matters.
Read Guide →Discovering something new is not the only route to an important contribution. Showing convincingly that an influential assumption, result, method, or interpretation is wrong can sometimes matter even more because it changes what a field believes it already knows.
Read Guide →Incremental research becomes redundant when another similar study is unlikely to change what researchers can reasonably conclude. The boundary depends on the existing evidence, remaining uncertainty, and information the proposed study can add.
Read Guide →Some scientifically important questions cannot be tested through the most direct study because obtaining decisive evidence would require unacceptable harm, exposure, withholding, intrusion, or another ethical compromise. The question may still matter, but researchers must distinguish its importance from what ethical evidence can actually establish.
Read Guide →Consequential exclusions should usually be explained when readers need the rationale to understand or evaluate the study. The explanation should identify why the population or variable was excluded and what that decision means for the evidence and conclusions.
Read Guide →A replication does not become worthless when the original finding does not recur. An informative non-replication can reduce confidence in a claim, expose possible boundary conditions, improve effect estimates, and identify questions that the original study could not answer.
Read Guide →Before defending a proposed study, try to construct the strongest credible argument against doing it. A serious objection can expose weaknesses in the rationale, evidence, contribution, design, feasibility, or assumptions while there is still time to respond.
Read Guide →A gap in the literature does not automatically justify another study. Before collecting new data, determine whether existing evidence already answers the important question with enough confidence that your proposed study would change very little.
Read Guide →A fixed submission or graduation deadline should determine when earlier research milestones need to happen. Work backward from the true final requirement, account for dependencies and review time, and identify early when the proposed study no longer fits the available time.
Read Guide →A search strategy is more than a list of keywords. It is a deliberate plan connecting your research question to searchable concepts, appropriate terminology, information sources, query structure, and decisions about how the search will be tested and documented.
Read Guide →Not every literature search needs to be systematic. The appropriate level of rigor depends on what the search is supposed to accomplish, how the literature will be used, and how strongly your conclusions depend on identifying the relevant evidence.
Read Guide →Systematic, reproducible, and comprehensive describe different qualities of literature searching. A search can be reproducible without being comprehensive, systematic without achieving perfect coverage, or extensive without being sufficiently documented to reproduce.
Read Guide →There is no universal number of databases, papers, or search results that makes a literature search good enough. Adequacy depends on the study, the role the literature plays in it, and whether the search can support the claims you intend to make.
Read Guide →You do not need systematic-review-level documentation for every literature search, but keeping a proportionate record can make your research easier to revisit, update, explain, and defend.
Read Guide →A practical step-by-step guide to searching the research literature effectively. Learn how to turn a research question into a reproducible search strategy, choose databases, find search terms, refine results, and document what you did.
Read Guide →Your first literature search usually should be broad enough to reveal the terminology and shape of the literature, but not so broad that the results become meaningless. Learn how to find a useful starting point and refine it deliberately.
Read Guide →Thousands of results do not automatically mean your literature search is too broad. Learn how to diagnose excessive irrelevant retrieval and narrow a search without unnecessarily losing relevant studies.
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