Protocol
Walk forward to see what changed after a key paper
The paper's reference list knows the past. Its citing papers know part of the future.
When it fits
- A useful older paper may have replications, critiques or later extensions.
When to avoid it
- Forward citation databases have coverage differences and citation lag; absence of citing papers is not proof that no later work exists.
Why it matters
Run a forward citation search on a key seed and screen newer papers for replication, contradiction, boundary conditions and updated methods. Prioritize records that directly test or challenge the original claim, not every paper that cites it in passing.
Steps
- Seed identity is exact.
- Citing records are sorted or filtered for the relevant question.
- Replications and direct tests are distinguished from incidental citations.
- Corrections, critiques and newer syntheses are captured.
- Search date and citation index are recorded for consequential reviews.
An example
Forward-search a 2024 human-AI reliance experiment to find whether its confidence-display result replicated in 2026 interfaces.
Check your result
The evidence review includes important later tests or limitations rather than freezing the literature at the seed date.
Keep this limit in mind
- Forward citation databases have coverage differences and citation lag; absence of citing papers is not proof that no later work exists.
Connected ideas
Useful withIterate citation chaining only when it keeps adding value
Evidence and sources
TARCiS recommends backward and forward citation searching as supplementary methods particularly for topics that are difficult to capture reliably with text terms.
Citation searching alone is not recommended when completeness of recall is the goal.
Guidance on terminology, application, and reporting of citation searching: the TARCiS statement · Recommendations 2-4