Positive and negative contexts predict duration of pig vocalisations
Positive and negative contexts predict duration of pig vocalisations is a scholarly work by Mary Friel, Kym Griffin, Lucy Asher, and Lisa Collins, published in 2019 in ''Scientific Reports''. The main subjects of the publication include cognition, arousal, cognitive psychology, animal welfare, psychology, valence, bird vocalization, origin of the domestic dog, developmental psychology, valence, and social psychology. The authors found that grunts were shorter in positive trials than in negative trials.