(a) Mom & Dad & other relatives trained them;
(b) Mormon leadership ingrains them thru cultic "blame games" aimed at apostates;
(c) overwhelming emphasis on "feelings" as determiner of truth...
Examples on (C):
From the Doctrine & Covenants "Student Manual" published by the Mormon church in 2000:
"Elder Boyd K. Packer described how the Spirit communicates: 'I have come to know that inspiration comes more as a FEELING than as a sound...'" (p. 378) [Packer's an "apostle"]
Reuben Clark was one of the top three hierarchical Mormons:
"...after praying to the Lord and FEELING inspired..." (p. 362)
p. 21 of the manual uses the word "feeling" or "felt" three times on p. 21...uses the word "burn" or "burning" three times (in relation to a "burning of the bosom")...
Altho Mormons place a high emphasis on education, much of Mormonism's "discernment" boils down to such sentimentalism...which leads to...
"'We can tell when the speakers are 'moved upon by the Holy Ghost' only when we, ourselves, are 'moved upon by the Holy Ghost.'" (Address delivered to seminary & institute of religion personnel July 7, 1954, as cited in the student manual, p. 144)
So there ya go. A kind of circular reasoning...well, "reasoning" isn't the right word here...circular "bosoming" perhaps...where just about anything can be constantly reinforced as "so"...
When the mishies were cruising me for conversion as I was on my way to Vietnam, one frequent expression was
“We know these things to be true.”
This was used to quell investigators’ doubts about
Nephites
Lamanites
Gold plates inscribed in `reformed Egyptian’
Book of Abraham
Umim & Thummim
Terrestrial/Celestial/Telestial Kingdoms
BoM books with names like Jarom, Omni, Mosiah, Ether, Alma, etc.
The is called a "Double Bind" psychological control system, and is the basis of almost all cults.
If you are blessed, you owe ... so do/give ... for/to us.
If you are not blessed it is because you haven't done/given enough for/to us.
You cannot win.
Mormonism BOTH steals from the wealthy and grinds the face of the poor.