I would be more convinced if you could also link to studies showing how early family life and local history have no impact on developmental brain processes and don’t create culture traps.

Prescription drugs, used according to the bottle/doctor. Hard drugs mixed in with softer ones. Intentional drugging. Many ways.

What the government could do to enable what you’ve called out is help ensure more people meet the necessary lower levels of Maslow’s hierarchy so that when kids show up to stuff marshmallows in their mouths they can feel secure enough in the probable truth of the statements and even simply the return of the researcher to assign any probability to the appearance of a second marshmallow.

Step one is something like don’t let babies be raised in abandoned projects where everything they have gets stolen regularly from before they can remember.