From bdeaster
http://www.ncbi.nlm.nih.gov/pubmed/19713617
From zhichenggu
ESRB (for rating video games)
http://www.esrb.org/
From mushahid
http://phys.org/news/2014-06-racial-gender-representation-video-games.html
From gkerickson
http://moralmachine.mit.edu/