<P> The second type of cryptomnesia results from an error of authorship whereby the ideas of others are remembered as one's own . In this case, the plagiarizer correctly recognizes that the idea is from an earlier time, but falsely remembers having been the origin for the idea (or, having lost the specific memory of encountering it in print or conversation, assumes that it "came to" the plagiarizer as an original idea). Various terms have been coined to distinguish these two forms of plagiarism--occurrence forgetting vs. source forgetting and generation errors vs. recognition errors . The two types of cryptomnesia appear to be independent: no relationship has been found between error rates and the two types are precipitated by different causes . </P> <P> Cryptomnesia is more likely to occur when the ability to properly monitor sources is impaired . For example, people are more likely to falsely claim ideas as their own when they were under high cognitive load at the time they first considered the idea . Plagiarism increases when people are away from the original source of the idea, and decreases when participants are specifically instructed to pay attention to the origin of their ideas . False claims are also more prevalent for ideas originally suggested by persons of the same sex, presumably because the perceptual similarity of the self to a same - sex person exacerbates source confusion . In other studies it has been found that the timing of the idea is also important: if another person produces an idea immediately before the self produces an idea, the other's idea is more likely to be claimed as one's own, ostensibly because the person is too busy preparing for their own turn to properly monitor source information . </P> <P> As explained by Carl Jung, in Man and His Symbols, "An author may be writing steadily to a preconceived plan, working out an argument or developing the line of a story, when he suddenly runs off at a tangent . Perhaps a fresh idea has occurred to him, or a different image, or a whole new sub-plot . If you ask him what prompted the digression, he will not be able to tell you . He may not even have noticed the change, though he has now produced material that is entirely fresh and apparently unknown to him before . Yet it can sometimes be shown convincingly that what he has written bears a striking similarity to the work of another author--a work that he believes he has never seen ." </P> <P> Jorge Luis Borges's story, "Pierre Menard, Author of the Quixote," is a meta - fictive enactment of cryptomnesia . This work is written in the form of a review or literary critical piece about (the non-existent) Pierre Menard . It begins with a brief introduction and a listing of all of Menard's work . </P>

An idea or thought that takes over the mind and cannot be forgotten