On the one hand, the difference in body size between th…
タグ: Juichi Yamagiwa
The family of the future
The family and community have been supported by the bas…
The mentality that produces violence
Why did violence increase sharply in civilized society?…
Regional differences in inter-group relationships
Clear differences were found between the inter-group re…
The ecology of lowland gorillas and chimpanzees: surprising similarity
More recently, studies in African lowland forests have …
Communication depending on different group sizes
In fact, even today, humans form groups of various size…
Potato washing by Japanese macaques on Kojima Island
The most well-known cultural behavior of Japanese macaq…
Plundering the birds’ pantry
The evolutionary history of primate diets is a story ab…
Human equality theory
Using this primate social evolution model, Itani critic…
Prerequisites of the family
Taking their cue from the arguments of Espinas, Imanish…