Just to clarify, I don't in any sense question the fact that it's possible to induce false memories - as I said, I have encountered this phenomenon in cult abuse survivors whom I have worked with, who had been subjected to extreme abuse over a significant period of time.
But (and I am trying to be really careful here to avoid giving offence or implying expertise I don't possess), it's also a phenomenon that advocates of abuse survivors need to be careful with, because it can, and many times has been, used to "explain away" abuse which has actually occurred.
We don't do the truth (and therefore, usually, women, who, let's be real, are most often the victims of disbelief) any favours, if we accept too readily that memory is so very malleable, that any degree of trauma can easily alter it.
But it's impossible to prove one way or another and no doubt Knox should be given the benefit of the doubt at least in a legal context - not be convicted of giving a false statement unless intent to do so can be proven behind reasonable doubt.
And I do accept the suggestion up-thread that (it stands to reason) some people would be innately more prone to such influence than others.
In fact, I do wonder whether that's what the insistent repeated presentation of Knox in her ITV show as a quirky, whimsical fantasist given to flights of imaginative fancy, was all about. As the "vision" we are through her eyes of Lumumba in the show is presented very much in the style of her other "fantasies" (where she sees the talking flyers, and so on) - perhaps the message is supposed to be that she had a highly visual imagination, which contributed to her accusation of Lumumba.
Again, feels to me like a trite over-simplification of a serious and complex issue. But maybe that's TV drama for you......