Search across guide titles, topics, keywords, and content throughout the Researcher's Field Guide.
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Not every paper you encounter belongs in your reference library. A useful rule is to save sources when you have a plausible reason to retrieve, evaluate, cite, or reuse them, while avoiding indiscriminate collection.
Read Guide →Reference count tells you how many works were cited, not whether the right literature was found or represented. A comprehensive review depends on appropriate coverage, search quality, relevance, and synthesis rather than bibliography length alone.
Read Guide →A literature search should be updated when enough time or change has occurred that new research could materially affect the review. The appropriate timing depends on the review method, pace of the field, stage of the project, and consequences of missing new evidence.
Read Guide →Scoping and mapping reviews overlap substantially, but the terms are not universally interchangeable. Their meaning depends partly on the methodological tradition, so researchers should define the approach they are using rather than rely on the label alone.
Read Guide →A literature review becomes a research project of its own not when it reaches a particular number of papers or pages, but when the review has an independent question, defensible methodology, systematic analysis, and scholarly contribution that comes from synthesizing existing evidence.
Read Guide →There is no fixed number of years after which another review becomes justified. A recent review may still need updating or replacing if its question, methods, coverage, or evidence base no longer supports the answer researchers need.
Read Guide →Scoping reviews are designed for relatively broad questions, but breadth still needs boundaries. A review becomes too broad when its scope prevents coherent searching, screening, charting, mapping, or interpretation.
Read Guide →Finding a review on your topic does not necessarily mean your question has already been answered. Compare the actual questions, scope, evidence, methods, and applicability before deciding.
Read Guide →Convenience sampling is not automatically poor research, but repeated reliance on similar accessible participants can leave a field uncertain about where its findings apply. The important question is whether the sampling process matters for the inference being made.
Read Guide →A popular research topic is not necessarily an important one. Learn how to judge a topic by the problem it addresses, the uncertainty that remains, and the value of resolving it.
Read Guide →A highly local research question often requires more than adding a place name to a database search. Learn how to combine broad scholarly searching with local databases, repositories, grey literature, contextual terminology, and transparent search documentation.
Read Guide →Finding few local studies does not by itself establish a local research gap. Before claiming that evidence is missing, determine whether the apparent gap reflects the state of knowledge or the limits of how and where you searched.
Read Guide →Tens of thousands of search results do not automatically mean your literature search has failed. Learn how to diagnose why a search is so large and narrow it in ways that remain defensible for your research question.
Read Guide →Existing reviews can help you see the structure of a large literature before you search thousands of primary studies. The key is to use them as maps, while remembering that every map has boundaries and omissions.
Read Guide →Population can provide a defensible boundary for an enormous literature when the research question is genuinely about a defined group. The challenge is deciding which population differences matter without excluding evidence merely to make screening easier.
Read Guide →When an evidence base is vast and heterogeneous, detailed synthesis may be premature. Mapping can first show what evidence exists, how it is distributed, where clusters and gaps appear, and which questions are ready for focused synthesis.
Read Guide →Relevant studies do not always use the terminology you expect. A defensible search anticipates alternative language without assuming that simply adding more terms will make the search better.
Read Guide →No single research database necessarily represents the whole literature relevant to your question. Learn how to choose complementary databases based on disciplinary coverage, geography, study type, and search purpose.
Read Guide →Researchers may study the same concept without calling it the same thing. Learn how to build a literature search that accounts for synonyms, changing terminology, disciplinary language, and database indexing.
Read Guide →Axiology in research concerns values and their relationship to inquiry. It helps researchers examine how values may influence what is studied, how research is conducted, how evidence is interpreted, and what purposes research serves.
Read Guide →Research paradigms can seem unnecessarily philosophical, but their practical purpose is straightforward: they make assumptions about knowledge and inquiry more explicit. Learn what researchers actually need to understand without turning methodology into a philosophy course.
Read Guide →Researchers can sometimes work with more than one philosophical perspective in the same study. The challenge is not merely using multiple labels but explaining whether the perspectives are compatible, complementary, intentionally in tension, or operating at different levels of the inquiry.
Read Guide →An operational definition can become too broad when it combines observations that do not all represent the intended construct or allows irrelevant influences to affect the resulting measure. More comprehensive measurement is not necessarily better measurement.
Read Guide →A research aim states the broad purpose your study intends to achieve, while research objectives specify the concrete steps or outcomes through which that aim will be pursued. Understanding the distinction helps keep your research focused, coherent, and feasible.
Read Guide →A research objective is too broad when it commits the study to more than one project can reasonably accomplish, and too vague when the intended research accomplishment is unclear. The two problems often occur together, but they require slightly different fixes.
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