Literature review vs systematic review
Both synthesise published research, but they answer different needs. A (narrative) literature review maps what’s known on a topic, chosen by your judgement. A systematic review answers one focused question with a pre-registered, exhaustive, reproducible method — so anyone repeating it would find the same studies. One trades rigour for breadth; the other trades breadth for rigour.
Side by side
| Literature review | Systematic review | |
|---|---|---|
| Goal | Map / frame a field | Answer one focused question |
| Search | Selective, author’s judgement | Exhaustive, documented, reproducible |
| Protocol | Flexible, none required | Pre-registered (e.g. PROSPERO) |
| Selection | Author decides | Explicit inclusion/exclusion criteria, dual screening |
| Reporting | Narrative | PRISMA (incl. flow diagram) |
| Effort | One person, flexible | A team, many months |
When to use which
- Narrative literature review — mapping a broad area, building theoretical background, or framing a thesis chapter. This is what most graduate students write.
- Systematic review — a narrow, answerable question (often an intervention’s effect) needing a defensible, unbiased synthesis of all the evidence.
There are also other review types in between — scoping, rapid, integrative — when neither extreme fits.
What the systematic review adds
The rigour lives in three things: a pre-registered protocol (PROSPERO) so the question is fixed before you see results; a documented multi-database search with explicit criteria and dual screening; and PRISMA reporting, including the flow diagram that tracks every record from identification to inclusion. That’s what makes it reproducible — and far more work.
Get the free 10-Step Literature Review Checklist
A tick-box checklist for the whole review in ten steps — question, eligibility criteria, databases, search terms, search strategy, screening, data extraction, synthesis, quality appraisal, and reporting — from Literature Review Simplified. We’ll email you the download link.
Frequently asked questions
What's the difference?
A literature review surveys a topic by the author's judgement; a systematic review answers a focused question with a pre-registered, reproducible method.
When should I do a systematic review?
For a narrow, answerable question needing a defensible, unbiased synthesis of all the evidence — not for broad background framing.
Is a systematic review harder?
Yes — protocol, documented search, dual screening, appraisal, and PRISMA reporting; usually a team over many months.
What are PRISMA and PROSPERO?
PRISMA is the reporting standard (incl. the flow diagram); PROSPERO is the register where protocols are recorded in advance.
The Systematic Review and Meta-Analysis Protocol Workbook
Systematic reviews and meta-analyses are the highest level of evidence in academic research. But while Cochrane provides the methodology, they don't provide the blank templates you need to actually document every step for publication.
60 fill-in templates. Paperback $31.99 on Amazon
See inside the workbookJust want the templates? The Systematic Review & Meta-Analysis Protocol Kit: every template as a fillable PDF, $19.