I don't know much about Jonathan Haidt but in fact in the 3rd link there (youtube) Haidt does reference actual studies. See around 6min20s. I don't think Haidt

I don't know much about Jonathan Haidt but in fact in the 3rd link there (youtube) Haidt does reference actual studies. See around 6min20s. I don't think Haidt is some sort of evil troll, are you sure you've really listened to him?