Obstetrics & gynaecology

Placental function linked to brain injuries associated with autism

Allopregnanolone (ALLO), a hormone made by the placenta late in pregnancy, is such a potent neurosteroid that disrupting its steady supply to the developing fetus can leave it vulnerable to brain injuries associated with ...

Psychology & Psychiatry

A simple strategy to improve your mood in 12 minutes

We all have a remedy – a glass of wine or a piece of chocolate – for lifting our spirits when we're in a bad mood. Rather than focusing on ways to make ourselves feel better, a team of Iowa State University researchers ...

Psychology & Psychiatry

Both sexism and racism are similar mental processes

Prejudiced attitudes are based on generalised suppositions about certain social groups and could well be a personality trait. Researchers at the University of the Basque Country (UPV-EHU) have confirmed the link between two ...

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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.

This text uses material from Wikipedia, licensed under CC BY-SA