Good training for observers
For many scientists, observation is the key skill. An organization called Diaper Free Baby now offers information and training for anyone who wants to develop good observational skills. They say:
Observation is the first step in EC. While observing, there are a few things to look for. One is timing patterns and rhythms. Many babies need to pee.
(Thanks to investigator Ann Denion Hoskins for bringing this to our attention.)