I was curious about how they were defining laughter? I am a bit skeptical to be honest about the idea of change in behavior when we apply something to animals that will trigger a laughter in human. We can't be sure if that change behavior is indicative of joy and expressed through the vocalization of laugher.
The paper seem to be (I have skimmed) focused on group dynamics to determine what is laughter. They indicate that how animals signals they were having joy by making vocalization and it indicates social play.
I was curious about how they were defining laughter? I am a bit skeptical to be honest about the idea of change in behavior when we apply something to animals that will trigger a laughter in human. We can't be sure if that change behavior is indicative of joy and expressed through the vocalization of laugher.
The paper seem to be (I have skimmed) focused on group dynamics to determine what is laughter. They indicate that how animals signals they were having joy by making vocalization and it indicates social play.
Here is a super cute video of how social play would work: https://www.youtube.com/watch?v=L2EmA_UwIM8
But I am not sure if the animals are laughing though.