Wow, Cunningham's law in action! Thanks for posting, that sounds like a fascinating study. May simply be a case of bad toilets, though; from the article: "Those

Wow, Cunningham's law in action! Thanks for posting, that sounds like a fascinating study. May simply be a case of bad toilets, though; from the article: "Those with a government-built toilet were especially likely to choose a bush instead." EDIT: All cultural change is just slow. Give a European toilet to someone who's been using squat latrines all 40 years of their life and they'll perch. Give it to a younger person, and they'll learn the new way. Also, it looks like the cited statistic is a bit dramatic; only 21% of individuals who live in a household with a latrine practice open defecation. 80% efficacy is pretty good in social interventions. The household stat basically just says to me, "most Indian households include elderly members, who don't want to change their ways". EDIT 2: Link to paper: http://riceinstitute.org/wordpress/wp-content/uploads/2014/09/Open_Defecation.pdf http://riceinstitute.org/wordpress/wp-content/uploads/2014/0... the graphs of age by defecation rate on page 6 support my age-related guesses.