(playing a simple caricature is much easier, but Voldemort does not strike me as such)
Why thank you, I do try.
One of the things I've noticed is that, for the most part, people play characters that think like they do.
Except for stealing everything that isn't nailed down you mean?
To step out of character, my regular account has 2000+ karma on LW and I don't think I've been acused of sociopathy before. I guess I'm just that good at hiding it.
From Mike Darwn's Chronopause, an essay titled "Would You Like Another Plate of This?", discussing people's attitudes to life:
Conclusion, graphs, and references in article. As usual, I recommend reading Chronopause.com as Darwin has many good articles; to quickly link a few: