A Plan S compliant journal is not automatically screened by a predatory journal checker: Plan S tests open-access licensing and Directory of Open Access Journals (DOAJ) registration, not editorial integrity or peer-review conduct. The two checks answer different questions, and treating DOAJ/Plan S clearance as proof a journal is legitimate leaves a real compliance gap that research administrators need to close separately.
A predatory journal checker is a tool, checklist, or reference list — such as the Think. Check. Submit. checklist, Cabells’ Predatory Reports, or the archived Beall’s List — used to test whether a journal’s peer review, editorial board, and fee practices are genuine rather than a vehicle for harvesting article-processing charges.
- What is a predatory journal checker?
- Does Plan S compliance screen for predatory journals?
- DOAJ listing vs a dedicated predatory journal checker
- What does a Scopus journal check add?
- How should administrators layer both checks?
- Common questions about predatory journal screening
- Implications and the path forward
What is a predatory journal checker?
A predatory journal checker evaluates the operational and editorial conduct of a journal rather than its licensing terms. It looks at whether peer review actually happens, whether the editorial board is real and contactable, whether article-processing charges are disclosed upfront, and whether the publisher’s indexing claims can be verified.
Common red flags that these tools and checklists are built to catch include:
- Unsolicited, aggressive email invitations promising rapid publication
- No transparent article-processing-charge (APC) schedule until after acceptance
- An editorial board listing academics without their knowledge or consent
- A journal scope so broad it covers unrelated disciplines
- Fabricated or unverifiable impact-factor and indexing claims
These are the criteria a checker tests. None of them is what Plan S compliance actually checks — which is the source of the confusion this article addresses.
Does Plan S compliance screen for predatory journals?
Not directly. Plan S is a funder mandate — led by cOAlition S — requiring that publicly funded research be published open access under specific licensing terms. Its technical requirements state that a fully open-access journal must be listed in the Directory of Open Access Journals (DOAJ), or apply for DOAJ listing within one year of publishing its first article, to count as a compliant venue.
DOAJ listing is a proxy signal, not a predatory-publishing audit. cOAlition S guidance separately points authors toward the Think. Check. Submit. checklist for journal-selection due diligence — a clear indication that cOAlition S itself does not treat DOAJ/Plan S clearance as a substitute for a dedicated predatory check. Responsibility for the final journal-selection decision sits with the researcher and their institution, not with the funder’s compliance rule.
DOAJ listing vs a dedicated predatory journal checker
DOAJ vetting and a predatory journal checker overlap in intent — both aim to exclude disreputable venues — but they differ in scope, update frequency, and what they miss. DOAJ’s 2014–2016 re-application process is a useful illustration: it removed roughly 3,300 previously listed journals that failed revised inclusion criteria, which shows DOAJ listing is a snapshot assessment, not a continuously monitored guarantee.
| Mechanism | What it verifies | What it misses | Best used for |
|---|---|---|---|
| Plan S / DOAJ listing | Open-access licence terms; baseline transparency criteria at time of listing | Ongoing editorial conduct; peer-review quality after listing | Confirming funder-mandate eligibility |
| Predatory journal checker (Think. Check. Submit., Cabells, Beall’s archive) | Editorial board authenticity, peer-review conduct, fee transparency | Funder licensing compliance | Author-level due diligence before submission |
| Scopus / Web of Science journal check | Active indexing status, citation metrics, discontinued-title flags | Newer or non-English-language legitimate journals not yet indexed | Cross-checking indexing claims a journal makes about itself |
| Publisher/journal finder tools | Journal-manuscript fit by scope and audience | Legitimacy screening entirely — these tools assume the candidate pool is already vetted | Narrowing a shortlist of already-verified journals |
What does a Scopus journal check add?
A Scopus journal check confirms whether a title is actively indexed, flags titles that have been discontinued from Scopus for quality reasons, and surfaces citation-based metrics. This is a useful cross-check against a journal’s own indexing claims — predatory titles frequently claim indexing status they do not have — but Scopus coverage is not designed as a predatory-publishing screen and does not evaluate peer-review conduct directly.
It is also asymmetric: a legitimate new journal may not yet be Scopus-indexed, so absence from Scopus is not itself proof of a predatory operation. Administrators should treat a Scopus check as one data point in a layered process, not a standalone verdict.
How should administrators layer both checks?
Institutions handling funder-mandate compliance and research-integrity screening as two separate workstreams should merge them into one journal-selection workflow. A practical sequence:
- Confirm funder eligibility first. Check DOAJ listing (or ROAD registration) to establish Plan S / open-access mandate compliance.
- Run a dedicated predatory check second. Apply the Think. Check. Submit. checklist, or consult Cabells’ Predatory Reports where the institution has a subscription, against the same candidate journal.
- Cross-check indexing claims. Verify any Scopus, Web of Science, or PubMed indexing the journal advertises against the indexing service’s own database.
- Escalate ambiguous cases to the institution’s research-integrity office or library scholarly-communications team rather than relying on a single automated pass/fail signal.
- Record the outcome in the researcher’s submission file, since funders and REF-style assessment exercises increasingly expect an audit trail of due-diligence steps, not just a final compliance flag.
This sequencing matters because each mechanism fails differently: DOAJ/Plan S can clear a journal on licensing grounds while missing recent editorial decline; a predatory checker can flag conduct issues DOAJ has not yet caught up with; Scopus can catch a false indexing claim that neither of the other two checks is built to test.
Common questions about predatory journal screening
How do you check if a journal is predatory?
Run the Think. Check. Submit. checklist against the journal, verify the editorial board members individually, confirm the article-processing charge is disclosed before submission, and cross-check any indexing claims (Scopus, DOAJ) directly against the indexing service rather than trusting the journal’s own website.
What is a red flag for a predatory journal?
Aggressive, unsolicited invitation emails promising unusually fast peer review are the most cited red flag. Other consistent signals include an editorial board that cannot be independently verified, a scope spanning unrelated disciplines, and article-processing fees disclosed only after acceptance.
How do you check if a journal is reputable?
Confirm active listing in DOAJ or an equivalent recognised index, verify the publisher belongs to COPE or a comparable ethics body, check that peer-review policy is published and specific, and confirm the editorial board’s affiliations independently rather than trusting journal-supplied contact details.
What is considered a predatory journal?
A predatory journal is one that charges publication fees while failing to provide the genuine editorial and peer-review services legitimate scholarly journals promise, prioritising revenue from article-processing charges over publication quality and research integrity, per definitions developed by COPE and reflected in Frandsen et al.’s peer-reviewed literature review.
Implications and the path forward
For institutional research offices, the practical implication is procedural: a single “is this journal Plan S compliant?” check cannot double as a research-integrity sign-off, and treating it that way creates audit risk when a funder or REF-style exercise later asks how a submission venue was verified. Layering a DOAJ/Plan S check with a dedicated predatory journal checker and an indexing cross-check is not duplicative effort — each step tests a distinct failure mode that the others do not cover.
As open-access mandates expand and predatory operations grow more sophisticated at mimicking legitimate indexing and DOAJ-style transparency signals, the gap between funder-mandate compliance and editorial-integrity verification is likely to widen rather than close. Institutions that formalise the layered workflow now — rather than relying on DOAJ/Plan S status as an implicit predatory-publishing seal of approval — will be better positioned as funders tighten reporting expectations around journal-selection due diligence.