Research data · Disease model and test

Forced swim test in anxiety research

From 2021 to 2025, 582 animal research papers on anxiety mentioned the forced swim test in their title or abstract.

That is 1.4 times the 422 papers of 2011 to 2015. Between the same two periods, the papers on anxiety that mention any of the 90 tests we count grew more slowly, to 1.3 times as many.

582 papers on anxiety from 2021 to 2025 mentioned the forced swim test
19% of the papers on anxiety that mention any test mention the forced swim test
19% of the papers that mention the forced swim test are on anxiety
1.4 times as many papers as in 2011 to 2015

Papers by year

Animal research papers on anxiety that mention the forced swim test, by year, 2001 to 2026

The 2026 bar counts papers added to PubMed by November 8, 2026.

  • Papers in a full year
  • 2026 so far
Show the counts for each year
Papers by year
YearPapers
20019
200217
200314
200422
200529
200640
200745
200849
200954
201065
201173
201261
201383
201498
2015107
2016130
2017117
2018114
2019110
2020133
2021140
2022109
202381
2024106
2025146
2026 (part year)126

Papers on anxiety that mention the forced swim test fell from 140 in 2021 to 81 in 2023, then rose to 146 in 2025. Part of this dip may come from PubMed's indexing rather than from fewer studies. Where PubMed has indexed a paper, we take its disease models from that indexing. Otherwise PubTator 3, NCBI's text-mining service, has to find the disease in the title or abstract, or the paper is not counted here. Papers that PubMed indexed under the subject heading Animals also fell and rose, from 200,221 in 2021 to 156,447 in 2023 and 235,479 in 2025.

Which species the papers used

Each bar is a share of the 582 papers from 2021 to 2025. A paper can use more than one species, so the shares can add to more than 100%.

Species

Mouse
332 papers 57%
Rat
263 papers 45%
Other animals
6 papers 1%

“Other animals” counts papers that use none of the species this chart names.

Tests mentioned alongside the forced swim test

Each bar is one test, with how many of the 582 papers also mention it, and what share that is. Of these papers, 49 (8%) mention no other test.

The 12 tests these papers mention most

342 papers 59%
223 papers 38%
154 papers 26%
78 papers 13%
46 papers 8%
30 papers 5%
20 papers 3%
19 papers 3%

Which papers count

A paper counts here when it is animal research, mentions the forced swim test in its title or abstract, and studies anxiety.

We tell whether a paper studies anxiety from its MeSH terms, the subject headings the National Library of Medicine adds when it indexes a paper. For a paper without MeSH terms, PubTator 3, NCBI's text-mining service, has to find the disease in the title or abstract. A paper can count under more than one disease model. A paper that mentions the test only in its methods is missed, so the count runs low.

The page on anxiety research names the subject headings we count as anxiety. Download the test list for the search terms we used for the forced swim test, or the paper list for the PubMed ID of every paper behind these counts. Our main page, Behavioral tests in published research, has the full method and each source's terms of use.

More tests and disease models

Every pairing of a disease model and a test with 30 or more papers from 2021 to 2025 has a page like this one.

The page on the forced swim test counts all the papers that mention it, whatever they study. The page on anxiety research ranks the tests by their papers on anxiety.

How to cite

APA

ConductScience. (2026, November 10). Forced swim test in anxiety research [Data set]. https://conductscience.com/resources/data/behavioral-tests/models/anxiety/forced-swim-test

BibTeX

@misc{conductscience_anxiety_forced_swim_test_2026,
  author = {{ConductScience}},
  title = {Forced swim test in anxiety research},
  year = {2026},
  month = nov,
  url = {https://conductscience.com/resources/data/behavioral-tests/models/anxiety/forced-swim-test},
  note = {Data set, released November 10, 2026},
}

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