thats a good one, yes deliberately made 'strange' it to make use of beautifying the horror, in a bizzare way. "psychological' is an understatement it is often used by those who dont know what they talking about. it is really High Art cinematic experience, im my opinion, Stanley Kubrick could have made this film too, it explores horror, love, lust,
extremely beautiful, and extremely psycho-mad at same time, entralling but same times, mystefying, AND coupled with visual clarity at same time...tense and soothing at same time, deliberate and confused at same time (characters intends, in particular the dancer (Portman) naivity and experienced mix , dancing as experienced but sex is restrained and so on. Murderous intend is deliberately made confused with fantasy and or it is repressed but obsession and pressure of the performance mounts and releases it, as does releases the magic of ballet dancing.
read this link below;
Black Swan - Rotten Tomatoes
Great film, it is a WORK of Art, not some 'what film can we make to sell' type...it was never made with this sort of intention...(although Portman is a Star contracted into the making of this film, which to me, is approached as a way of making this art house film break out into the mainstream audience (money involved yes, but its not on the 'prime' focus.