Stall trainning.
I believe stall training must be done in an aircraft in which a full stall series does not present a danger (Skyhawk, Warrior, etc.)
A pilot must be able to feel his butt rise out of the seat and against shoulder harness and then learn to fight the 'reptile brain' response to "pull back" to arrest the decent.
I suspect we all remember our first few stalls in light aircraft and maybe not wanting to let the yoke move forward.
This needs to be done through out one's flying career or you become fearful of the aircraft.