I found two articles by the same author but published six years apart.Although I'm not an attorney, it does seem possible to plagiarize yourself: in most cases you assign the copyright to the publisher and, hence, if you want to quote yourself/use your material, you may need to get permission from the publisher. For example in the 5th edition of the APA Pulication Manual (p. 122): "...APA policy permits use up to 500 words of APA-copyrighted journal text without explicit permission...."The
articles used different data sets and drew slightly different conclusions.
However in the introductory and literature review sections, there were
entire paragraphs that were the same in both articles. The latest article
did not cite the first article and the copied paragraphs were not in
quotes. Is this common practice and/or an ethical problem? Can you
plagarize yourself?
Scott Millis
.
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