This isn't true. His victims were picked entirely at random. He made a point of never, ever attempting to abduct or kill anyone he had even possibly met before, and in interviews claimed he made a point of staying away from female acquaintances or girlfriends when his "rage was building."
You might argue he had resentment towards women in general (I'm not sure how true that is either: he was considered handsome and charming by most women who had known him), but he certainly had no personal animosity towards his victims.
I'm a low Fe type but I'm not a Ted Bundy, obviously. Maybe he was a serial killer with high Fe. I can't associate Fe with serial killing without something more.
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Relax, no-one with a brain is saying all low Fe types are serial killers, any more than I was saying that all low Fi types are sociopathic fuck-heads.
The first thing to understand about functions is to know how broad they are. Think about it - there are 7 billion people on this planet, all a little different, but only 16 types to put them into. The only way that can work is if they are wide enough to park a fleet of battleshipsin. Nose to nose, at that.
When talking about serial killers you are liable to end up considering the very worst aspects of any type or function. If Ted Bundy was a TP that doesn't reflect on you any more than the idea that Hitler was an INJ casts me into suspicion.
I often see people asking questions of the form "What type is most likely to do xyz". I'd say the question itself is wrong, because function theory can't answer it. All it does is provide a frame work for understanding the way people think. A much better question is "
Why would a given type do this".
Fe is the need to respond to what is seen as socially a nessesary or opportunity. When it manifests in a good way you see people who go out of their way to help other or just smooth things over. A healthy but low order Fe can often be seen in teachers whos interests are led by Ti, but love to share the joy in what they do with others, helping them to reach their potential. In less lovable cases, it makes people overly concerned about how people percieve them, or a need to be the alpha. Such peoples egos can be badly effected by social rejection.
If you sit down and think about it for awhile you'll be able think of many other ways Fe in a given type can work. Explore those battleships as muchas you want, there's a lot to see. Certainly I don't claim to know every possible aspect of each type - there's just too many. I rather like it when someone shows me one I've missed.