This question is right exactly in the expertise of Elayne but I know she has been very busy lately - no doubt she will weigh in when able. My own sense of caution as to the first article would be on this premise: "Human nature is complicated, no doubt, but most of us would at least like to think that people are fundamentally good. If you’re a big believer in humanity’s best qualities, a new study is backing up your beliefs in a major way. It appears that babies may be instinctively altruistic." …
(Quote from Hiram) I completely agree. It is such a fetish that we probably need to develop a clear statement explaining the issue and pointing the way to an Epicurean position, just as on this "problem of universals."