Long menopause allows killer whales to care for adult sons

Scientists have found the answer to why female killer whales have the longest menopause of any non-human species - to care for their adult sons. Led by the Universities of Exeter and York and published in the journal Science ...

Study demonstrates evolution of stereotypes

(Phys.org)—Researchers from Scotland suggest that stereotypes form and evolve over time through social transmission of information, similar to the way in which languages evolve.

Bonobo moms play an active role in helping their sons find a mate

Many social animals share child-rearing duties, but research publishing May 20 in the journal Current Biology finds that bonobo moms go the extra step and actually take action to ensure their sons will become fathers. From ...

New study shows scientists who selfie garner more public trust

Many scientists today have embraced social media as tools to communicate their research and to engage broader audiences in scientific discovery and its outcomes. But the rise of the "social media scientist" has also led communicators ...

How superstitions spread

Ancient Roman leaders once made decisions about important events, such as when to hold elections or where to build new cities, based on the presence or flight patterns of birds. Builders often omit the thirteenth floor from ...

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Social group

A group can be defined as two or more humans that interact with one another, accept expectations and obligations as members of the group, and share a common identity. By this definition, society can be viewed as a large group, though most social groups are considerably smaller.

A true group exhibits some degree of social cohesion and is more than a simple collection or aggregate of individuals, such as people waiting at a bus stop. Characteristics shared by members of a group may include interests, values, ethnic or social background, and kinship ties. According to Paul Hare, the defining characteristic of a group is social interaction.

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