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.

How do smiling profile pictures influence social behavior according to the research?

What is the significance of the three degrees of separation rule in social networks?

In what ways do behaviors like obesity and happiness spread through social networks?

What did Robin Dunbar's studies reveal about the size of ancient human groups?

What are the implications of the biological basis of the three degrees of separation?