Why we smile on Facebook - Finding Your Science

The video discusses the impact of online data sources on social science, focusing on the study of social networks both in the real world and online. It introduces the concept of the three degrees of separation, explaining how individuals are influenced by their friends up to three degrees away. The video also explores sociological phenomena such as obesity and happiness, and their spread through social networks. Finally, it delves into the biological basis of social influence, referencing Robin Dunbar's research on ancient human groups and their social connections.

What is the main challenge in the massive passive revolution in social science?

• Developing new social media platforms

• Collecting data from online sources

• Understanding complex interconnections in social networks

• Increasing the number of online users

What is the 'three degrees of separation' rule?

• People are influenced by everyone in their social network

• People are influenced by their friends and two more levels of connections

• People are only influenced by their immediate friends

• People are influenced by their family members only

What phenomenon is observed with smiling profile pictures on social networks?

• They are only found in certain age groups

• They are less common than non-smiling pictures

• They are randomly distributed

• They tend to cluster among connected individuals

According to Robin Dunbar, what is the typical size of ancient human groups?

• About 150 individuals

• About 50 individuals

• About 500 individuals

• About 1000 individuals

What is the biological basis of the three degrees of separation rule?

• Humans evolved to influence and be influenced by people within three degrees

• Humans can only remember three people at a time

• Humans are naturally solitary creatures

• Humans prefer to interact with strangers