What does BFF stand for?
AnswerBest friends forever
BFF describes a very close friend.
Society · Facts & stats
Friends facts & stats
7 fact-checked facts about friendship and social connection, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
What is a pen pal?
AnswerA friend you exchange letters with
Pen pals keep a friendship going through letters.
Going deeper
What does Dunbar's number describe?
AnswerHow many stable relationships a person can maintain
Anthropologist Robin Dunbar linked group size to the capacity of the human brain.
In the Sherlock Holmes stories, who is Holmes's loyal friend?
AnswerDr. John Watson
Watson narrates most of the stories as Holmes's companion.
In The Lord of the Rings, who is Frodo's devoted friend?
AnswerSamwise Gamgee
Sam accompanies Frodo all the way to Mount Doom.
Expert level
Dunbar's number is roughly how many people?
AnswerAbout 150
Dunbar estimated people can keep around 150 stable relationships.
The Harvard Study of Adult Development, known for its findings on relationships, began in which year?
Answer1938
It is one of the longest-running studies of adult life.
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