Are we able to construct experiments to test this? I’m not sure how that’s possible given the confounds we don’t have the ability to control for (genetics being

Are we able to construct experiments to test this? I’m not sure how that’s possible given the confounds we don’t have the ability to control for (genetics being a huge one). Looking at group level statistics can’t provide a definitive answer due to this. If you have some links that prove otherwise I’d love to see them!