Some people question the efficacy of Behavioral Sciences, but apparently the Current Administration thinks it's worth a try. The following linked article is about a quiet, inexpensive little program that administration has been trying out for the past couple of years.
It's a principle called 'nudging' and it's basically a sneaky little way getting people here the USA to change their habits. Based on the results mentioned in the article it seems to work pretty well. Unless you attempt to use it on intelligent, educated people such as doctors.
Anyway, read it and judge for yourself.