The Dunedin Study, a study collecting data from 1000 kids from child birth all the way till now, and still ongoing, in its 45th year now.
unlike clinical trials in which researchers can manipulate data, this is entirely observation based.
the data collected cuts across social stratas and across many fields of science, from biology to psychiatry etc.
as one researcher noted,
“Psychiatry and cardiovascular students, they don’t even speak to each other in medical school. Nobody understands at all at the moment the relationship between the two things. For me, getting a really clear picture of their connection is going be the big yield in the end.”
just wonder... throughout human history... why hasn't such studies been done before?