Evidence map›Paper›PMID 31110007›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2019

Negative emotional contagion and cognitive bias in common ravens (

Jessie E C Adriaense, Jordan S Martin, Martina Schiestl, Claus Lamm, Thomas Bugnyar

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
9.2field-weighted citation impact, top 1% of its field
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

30 citing papers in PubMed, 59 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Dimensions of corvid consciousness.Animal cognition · 2025
    Review
  5. Modifying the Attention Bias Test to Assess the Emotional State of Dogs.Animals : an open access journal from MDPI · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. No Evidence for Contagious Yawning in Juvenile Ravens (Animals : an open access journal from MDPI · 2022
    Article
  13. Article
  14. Article
  15. Emotional contagion in nonhuman animals: A review.Wiley interdisciplinary reviews. Cognitive science · 2022
    Review
  16. Article
  17. Article
  18. Article
  19. Collective Emotional Contagion in Zebrafish.Frontiers in behavioral neuroscience · 2021
    Article
  20. Negative play contagion in calves.Scientific reports · 2020
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 3 countries.

Jessie E C AdriaenseDepartment of Cognitive Biology, University of Vienna, 1090 Vienna, Austria; jessie.adriaense@univie.ac.at.
Jordan S MartinDepartment of Cognitive Biology, University of Vienna, 1090 Vienna, Austria.
Martina SchiestlDepartment of Cognitive Biology, University of Vienna, 1090 Vienna, Austria.
Claus LammSocial, Cognitive and Affective Neuroscience Unit, Department of Basic Psychological Research and Research Methods, University of Vienna, 1010 Vienna, Austria.
Thomas BugnyarDepartment of Cognitive Biology, University of Vienna, 1090 Vienna, Austria.
University of Veterinary Medicine Vienna · ATUniversity of Vienna · ATUniversity of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Emotional contagion is described as an emotional state matching between subjects, and has been suggested to facilitate communication and coordination in complex social groups. Empirical studies typically focus on the measurement of behavioral contagion and emotional arousal, yet, while highly important, such an approach often disregards an additional evaluation of the underlying emotional valence. Here, we studied emotional contagion in ravens by applying a judgment bias paradigm to assess emotional valence. We experimentally manipulated positive and negative affective states in demonstrator ravens, to which they responded with increased attention and interest in the positive condition, as well as increased redirected behavior and a left-eye lateralization in the negative condition. During this emotion manipulation, another raven observed the demonstrator's behavior, and we used a bias paradigm to assess the emotional valence of the observer to determine whether emotional contagion had occurred. Observers showed a pessimism bias toward the presented ambiguous stimuli after perceiving demonstrators in a negative state, indicating emotional state matching based on the demonstrators' behavioral cues and confirming our prediction of negative emotional contagion. We did not find any judgment bias in the positive condition. This result critically expands upon observational studies of contagious play in ravens, providing experimental evidence that emotional contagion is present not only in mammalian but also in avian species. Importantly, this finding also acts as a stepping stone toward understanding the evolution of empathy, as this essential social skill may have emerged across these taxa in response to similar socioecological challenges.

Indexed as

AnimalsArousalAttentionBehavior, AnimalBiasCognitionCrowsEmotionsEmpathySocial Behavioranimal emotionavian empathycognitive bias paradigmemotional contagion

Identifiers

PMID31110007
PMCPMC6561263
OpenAlexW2945583987

What OpenQuestion holds

Textmetadata
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.