This mod is actually 16 different game files or 16 separate files, so that if you would like to only play with specific traits/personality types, you can easily do so. Personality typing attempts to find the broadest, most important ways in which people are different, and make sense of these differences by sorting people into meaningful groups.
It is a system of categorizing people according to their tendencies to think and act in particular ways. The Mega 16 Personalities Trait Pack is created based on the 16 Myers & Briggs’ Personality Typing.