Mostly quantitative. However, I'm not sure the quantitative aspect accounts for way memes spread. The initial purveyor of the scapegoat consciously manipulates this phenomenon. It's quite interesting to me actually that along the course the meme's spread it can and likely will occur to other predators along the way that they may gain from its further proliferation - like the smell of good food in the kitchen, the idea strikes them as fundamentally good. Gah, it's so complicated (the details of how it plays out from case to case) it's hard to pic out a clear thing to discuss, but the priniciple is fairly simple. Taking advantage of it is just as simple for those prone to do so. Like, do you think societies are simply the sum of their individuals and their psychologies, or that when a bunch of people get together, stuff emerges that wouldn't be ther eotherwise? Hmm, well, yeah the sum of the individuals enables things that couldn't otherwise happen for sure. Mass psychology and all. It's definately a somewhat different topic than individual psychology. If I had the time and money I'd take courses in the area. The predators in question understand it intuitively. Hmm. That's a good question. Generally speaking I think of that particular issue differently.. as the guy in charge gets blamed... but I think you mean something different, as in a personality that basically asks for it. Generally I'd say it to be one of a few things, dependent upon the size of the group for one thing I guess... and well crap this one also gets complicated too. For a simple answer, I'd say that perhaps the individual is viewed as a dick by most, or weak.. or shit prolly somethin else. Maybe they're socially retarded. As long as a few people can agree that the person is "different" enough or maybe, rejectable enough... well, that's all it takes. Could be jealousy, each person can have a different reason for agreeing, but as long as they agree.... They can, yeah... but it's not necessary that they do. Bah I'm too tired to put more into it at the moment.