Professor Mike West was one of the keynote speakers at the TEDxUmeå conference on Leadership, Creativity and Innovation in Umeå, Sweden, on 17 February. In this video of his conference speech, Professor West discusses his research into positivity in teams, particularly in the UK's National Health Service.

Umeå, in northern Sweden, is the European Capital of Culture in 2014. The TEDx conference brought together artists, dancers, sculptors, business leaders and academics, including Bruce Avolio - renowned speaker on transformational and authentic leadership.