The secret of TikTok's success? Humans are wired to love imitating dance moves
- Written by Niall Edwards-FitzSimons, PhD Candidate in Ethnomusicology, Sydney Conservatorium of Music, University of Sydney

Since its launch in 2016, the online video sharing platform TikTok has grown at an astonishing rate. The app has been downloaded more than a billion times, and more than 700 million people around the world (most of them quite young) use it every day.
TikTok’s design brings together music, video, dance and viral challenges to create one...