I was listening to the FM radio while driving some months ago and the host of the show was having an interesting conversation with a behavioral scientist who operates http://www.brief-case.co/. Some parts of the conversation as recollected by me (probably well known!) Food Small radii plate makes you eat less (understand the human tendency is to fill a plate - especially buffet!) Greater contrast between the plate and food makes you -see- food and hence eat less (dark blue plate is the best!) Red color increase appetite (McDonalds, KFC example) Travel He just gave up on Mumbai local train travel More dust bin, better lighted could lead to Swaach Bharat! (experiments in Finland - footsteps marks leading to brightly lit dust bins increased its usage by 43%) Traffic signals a poorly designed (you see more than 1 signal and hence people do not think about stopping before the zebra line) Education is not to do with human behavior Retail Prime space in retail ...