@Smiddy
While there are Jews who have a concept of demons similar to Christianity, like everything else in our crazy Jewish world, there is no definitive theology or dogma regarding them. Still you will find a ritual about exorcism in the Midrash. Among the Dead Sea Scrolls were discovered a collection of “four songs for the charming of demons with music.” (11Q5) There is some further information about the practice in rabbinical literature, and even Josephus mentioned a Jewish exorcism in his writings. (Antiquities of the Jews, viii. 2, § 5) Also The Book of Tobit (found in the Catholic deuterocanonicals) is a Jewish tale centered on an exorcism.
So you are correct in that the definition of what a demon is in Judaism can be quite different than in Christianity, and this may account for the varied approaches (and lack thereof in some instances) among Jews throughout history. It should be of interest too that both Judaism and Catholicism perform exorcisms according to a liturgical formula.
@deegee
Thank you for that information, but I hope I didn't give you the impression that I was unaware of what a seance is. What I meant is I had no information on exactly what happened in the case I was referring to regarding the aunt's seance practices.
But I did some re-checking and discovered that the "seance" activity may have been limited only to the use of a talking board as a parlor game between the woman and her nephew. Roland was an only child, and the adults in his family were his primary friends according to reports. He was notably close to his aunt, a spiritualist. A news article in the Daily Mail states that Roland was given a talking board by his aunt as a gift and then died after the boy's 13th birthday. That account adds that it was after this loss that the alleged events took place.
I cannot offer much more information on the case, however.