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 Sourcing 

I must admit I'm more than a little concerned about the sourcing for this article:
A fifty-year old German-language journal article is more than a tad inaccessible, making it problematical as a general reference  as even if you could get your hands on it, a non-fluent-German reader would have difficulty browsing it to see where it says what.
I don't think an Biblically-inerrant Christian apologetics article, with a fairly partisan tone is a WP:RS for what should be an anthropological article.
''TalkStalk''(P) "