EDS6003 Chap.3 Literature Searching and Review Design
Literature Searching and Review Design
A review is a method, not a reading list
The course treats literature review as systematic, explicit and reproducible work for identifying, evaluating and interpreting existing knowledge. It establishes context and scope, justifies design choices, evaluates whether published claims are warranted and identifies the gap behind a research question.
Search terms evolve because the first vocabulary usually belongs to the student and later terms reflect how the field names the problem.
Synthesis changes the design
Historical organisation follows change through time, conceptual organisation compares ideas or mechanisms, and methodological organisation examines how research choices produced different findings.
Paragraphs should state a relationship among studies before presenting their evidence. A useful gap is a missing answer that matters to the proposed educational decision, not merely an empty search result or the claim that nobody has studied an extremely narrow phrase.
What this chapter covers
- 01
Systematic literature review
- 02
Concept groups and synonyms
- 03
Boolean AND, OR and NOT
- 04
Historical review structure
- 05
Conceptual and methodological synthesis
- 06
Evidence gaps and contribution
Worked example · free
Turn conflicting evidence into a research gap
- 3Group evidence by the claim it can support.
- 3Compare the limitations of each method.
- 3State a consequential missing connection.
Key terms
- Boolean Operator
- A connector such as AND, OR or NOT that controls how concept terms combine in a search.
- Concept Group
- A set of synonyms and related terms representing one component of the research question.
- Conceptual Review
- A synthesis organised around ideas, definitions, mechanisms or theoretical relationships.
- Methodological Review
- A synthesis examining how design, sampling, measurement or analysis shaped published findings.
- Literature Gap
- A consequential uncertainty in current knowledge that a feasible investigation can address.
Literature Searching and Review Design FAQ
How many keywords should begin a literature search?
The course worksheet begins with two or three key concepts, but each concept should expand into synonyms, spelling variants and field-specific phrases. Search the groups separately before combining them so you can identify which concept makes the result set too broad or too narrow.
What is wrong with summarising one study per paragraph?
Author-by-author paragraphs make the reader perform the comparison. A synthesis paragraph begins with a pattern, disagreement or methodological contrast, then uses several studies as evidence. It closes by explaining what that relationship means for the research question or planned design.
How do I know whether a literature gap is useful?
A useful gap is an unanswered issue that matters to an educational decision and can be reduced by the proposed evidence. If the gap exists only because the search phrase is unusually narrow, or if no feasible study could address it, it cannot justify the design.
What should I do when the literature disagrees?
Compare definitions, settings, participants, measures and designs before deciding that findings truly conflict. Two studies may use the same word for different constructs or support claims at different levels. Explain which difference plausibly produces the disagreement, then state what remains unresolved for your question.
Synthesis is stronger when it accounts for variation than when it selects the source closest to the conclusion you already prefer.
Assessment move
Maintain a search log with database, date, exact formula, filters, result count and one sentence about the next revision. Build a concept map before drafting headings. For every review paragraph, write its analytic job in the margin: define, compare, challenge, explain or establish a gap. Delete paragraphs whose only job is proving that a source was read.
Start with separate synonym lists for the population, educational issue and outcome, then combine alternatives within a concept before linking concepts. Record searches that fail as carefully as successful ones because an empty result may expose an overly narrow phrase rather than an empty field. Screen titles using one explicit rule, abstracts using another and full texts against the exact research problem.
Keep a reason for each exclusion so the final set does not drift towards sources that merely support the preferred argument. Build a synthesis matrix with rows for studies and columns for definition, setting, participants, method, finding and limitation. Draft from the columns, not down the rows. That change forces comparison across evidence instead of producing one summary per article.
When sources disagree, inspect whether they measured the same construct, studied comparable groups and used designs capable of supporting the same claim. Write the explanation for disagreement before deciding which finding is more persuasive. End every section by stating what the compared literature establishes and what remains unresolved for the proposed study.
The gap should emerge from the synthesis, not appear suddenly in the final paragraph. Re-run the search after refining key concepts and note whether the revision changed coverage in a meaningful way.
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