<< after witnessing a conspecific in a negative state, ravens perform in a negatively biased manner on a judgment task. >>
AA << findings thus suggest negative emotional contagion in ravens, and in turn advance our understanding of the evolution of empathy. >>
Jessie E. C. Adriaense, Jordan S. Martin, et al. Negative emotional contagion and cognitive bias in common ravens (Corvus corax). PNAS. first published doi: 10.1073/pnas.1817066116 May 20, 2019.
https://www.pnas.org/content/early/2019/05/14/1817066116
Bob Yirka. Researchers find evidence of negative emotional contagion in lab ravens. Phys.org. May 21, 2019.
https://phys.org/news/2019-05-evidence-negative-emotional-contagion-lab.amp
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