Afriend recently put me on to a classic demonstration of the phenomenon--the Robbers Cave study.
Of recent, I've come to learn of a certain phenomenon, the Robbers Cave study.
I learnt about the Robbers Cave study two years ago.
I got nothing from them.
A woman has her hair in a bun and she is sitting by a machine.
The woman is with some other people.
In Philadelphia there is a new waterfront, there is also a waterfront in Baltimore too.
Two people are standing and kneeling in the water.
The girls are taking a picture.