Theory 060/Water & Sanitation
Sanitation Adoption Is a Ratio
The claim
Sanitation adoption is set by the ratio of convenience to cost rather than by health messaging.
01The mechanism
Households adopt what is easier than the alternative; messaging changes beliefs, not the daily cost of use.
02Predictions
- P1Adoption should track the ratio.
- P2Health campaigns alone should underperform convenience improvements.
03Refutation
Adoption tracking messaging would favour the information model.