The issue I've had with studies of children and parenting techniques is this: There's rarely any accounting for family culture. How people in the family treat

The issue I've had with studies of children and parenting techniques is this: There's rarely any accounting for family culture. How people in the family treat each other day-to-day matters. Do the parents fight when the kid sleeps? This will for sure impact the kid and their sleep if they hear it. Is there a sibling who torments the kid? Sleep issues practically guaranteed. We've found it's much more effective to talk to our friends who've been doing trauma work. Finding out how they were handled and the impact they report tends to lead to more insight we can use. Studies that don't account for family culture and are done in countries where there's lots of shame and fear of judgment around what's going on in a family are already flawed.