@article{dodds2015a,
  title={Human language reveals a universal positivity bias},
  author={Peter Sheridan Dodds and Eric Clark and Suma Desu and Morgan Frank and Andy Reagan and Jake Williams and Lewis Mitchell and Kameron D. Harris and Isabel Kloumann and James Bagrow and Karine Megerdoomian and Matthew T. McMahon and Brian Tivnan and Chris Danforth},
  journal={Proceedings of the National Academy of Sciences},
  volume={112},
  pages={2389-2394},
  arXiv={1406.3855},
  onlineappendices={http://www.uvm.edu/storylab/share/papers/dodds2014a/},
  journalpage={http://www.pnas.org/content/early/2015/02/04/1411678112.abstract},
  year={2015},
  citations={15}
}