Evidence map›Paper›PMID 33959307›Full record

ArticleRoyal Society open science2021

Measuring complexity in organisms and organizations.

Nancy Rebout, Jean-Christophe Lone, Arianna De Marco, Roberto Cozzolino, Alban Lemasson, Bernard Thierry

Abstract read
In one paragraph

Article in Royal Society open science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Inhibitory control tests in non-human animals: validity, reliability, and perspectives.Biological reviews of the Cambridge Philosophical Society · 2025
    Review
  6. Article
  7. Tolerant and despotic macaques show divergent temperament but similar theory of mind.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Article
  8. Article
  9. Article
  10. Article
  11. Individual and ecological heterogeneity promote complex communication in social vertebrate group decisions.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2024
    Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Crested macaque facial movements are more intense and stereotyped in potentially risky social interactions.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Nancy ReboutPhysiologie de la Reproduction et des Comportements, CNRS, INRAE, Université de Tours, Nouzilly, France.ORCID 0000-0002-7071-0011
Jean-Christophe LonePhysiologie de la Reproduction et des Comportements, CNRS, INRAE, Université de Tours, Nouzilly, France.ORCID 0000-0002-5689-1370
Arianna De MarcoFondazione Ethoikos, Radicondoli, Italy.ORCID 0000-0002-3681-0254
Roberto CozzolinoParco Faunistico di Piano dell'Abatino, Poggio San Lorenzo, Italy.ORCID 0000-0002-2654-7261
Alban LemassonEthoS (Ethologie Animale et Humaine), Université de Rennes, Université de Normandie, CNRS, Rennes, France.ORCID 0000-0001-8418-5601
Bernard ThierryPhysiologie de la Reproduction et des Comportements, CNRS, INRAE, Université de Tours, Nouzilly, France.ORCID 0000-0002-8065-093X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

While there is no consensus about the definition of complexity, it is widely accepted that the ability to produce uncertainty is the most prominent characteristic of complex systems. We introduce new metrics that purport to quantify the complexity of living organisms and social organizations based on their levels of uncertainty. We consider three major dimensions regarding complexity: diversity based on the number of system elements and the number of categories of these elements; flexibility which bears upon variations in the elements; and combinability which refers to the patterns of connection between elements. These three dimensions are quantified using Shannon's uncertainty formula, and they can be integrated to provide a tripartite complexity index. We provide a calculation example that illustrates the use of these indices for comparing the complexity of different social systems. These indices distinguish themselves by a theoretical basis grounded on the amount of uncertainty, and the requirement that several aspects of the systems be accounted for to compare their degree of complexity. We expect that these new complexity indices will encourage research programmes aiming to compare the complexity levels of systems belonging to different realms.

Indexed as

combinabilitydiversityentropyflexibilitysystemuncertainty

Identifiers

PMID33959307
PMCPMC8074971

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.