It turns out that the 'Cry It Out' method of baby sleep training, where you ignore that your kid is screaming, crying and turning 40 shades of purple so that she can break herself out of the habit of being spoiled and cuddled to sleep, does more harm - way more - than good.
Denene Millner (2017). “My Brown Baby: On the Joys and Challenges of Raising African American Children”, p.32, Agate Publishing