Jim Bob and Michelle are fans of a controversial child-rearing practice known as blanket training.
To critics, blanket training is nothing more than horrific child abuse.
The Duggars learned about blanket training from a self-proclaimed child psychology expert named Michael Pearl.
Pearl is the author of an infamous book entitled How to Train Up a Child.
According to the authors of the Patheos blog "No Longer Quivering":
"He talks of using 1/4 inch plastic plumbing pipe, a rod of correction, a wooden spoon, or paddle."
This video of Pearl describing his methods might be disturbing to some viewers.