Actually, there is some credible
reincarnation research that has been conducted.
Ian Stevenson's research is considered convincing by many, that much is true.
That is certainly evidence of how badly many people want to believe in reincarnation, as well as of how difficult it is to be objective with such a subject. Arguably also of how easy it is to underestimate the challenges of reaching reliable conclusions on research when the basic concepts and statistical methodology are not well defined.
As Stevenson himself admits, with very good reason (
source):
Dr. Stevenson had accepted that his long-stated goal of getting science "to seriously consider reincarnation as a possibility" was not going to be realized in this lifetime.
That people always end up returning to his work as a reference, despite the undying worldwide interest in confirming it and a 1996 statement by Carl Sagan that it "deserved serious study" - which is to say, that further,
independent, separate research would be necessary to confirm or refute its conclusions - is evidence that his work, published between 1966 and 2003, can't be confirmed particularly easily, quickly or reliably.
And yes, independent confirmation is very much an indispensable necessity for it to have scientific credibility, as any serious researcher will tell you.
There are many people who say that such confirmation did not yet come out of a lack of interest or even outright bias from the qualified researchers worldwide. Lack of interest is one way of putting it, I suppose.
But it seems to me that a far simpler explanation is most likely to be true. Perhaps I am just jaded after seeing the extent to which people will go to make certain statements in the discussions about Creationism, who knows.