i have a theory:
let's take an isfj, top functions being si and fe. si dictates certain rules or "right" ways of behaving according to ethical principles for them, so it might be very hard for isfjs to understand and accept another way of acting. with a drive to harmonize and a dislike of conflict, isfj's might easily internalize criticism. since fe correlates with accepted, "community values," sometimes, isfjs would probably feel guilt or shame of their feelings don't adhere to a social norm and it might lead them to believe they are defective, corrupt, or evil in some way. since they rarely have "objective standards" of behavior of judging others, they might have a harder time navigating a completely subjective path in times of confusion or chaos.
entj's, for example, might not recognize or understand an emotion they're experiencing, but they might largely ignore them if going down an emotional path is not efficient or logical. therefore, they may be more consistent in their moods and behavior and exhibit a "cooler head" in the midst of an upset or a joy. you profess to be all gooey on the inside, babylon, let us in on your secret!