Just FYI, when reading any article with Marc Hauser as one of the lead authors, one should at least read up on the controversy regarding his methods: https://e

Just FYI, when reading any article with Marc Hauser as one of the lead authors, one should at least read up on the controversy regarding his methods: https://en.wikipedia.org/wiki/Marc_Hauser#Scientific_misconduct https://en.wikipedia.org/wiki/Marc_Hauser#Scientific_miscond... This article was published in 2010, he had to resign his faculty position at Harvard in 2011, and was found guilty of scientific misconduct in 2012 by the government Office of Research Integrity.