Intentional Plagiarism occurs when writers or researchers know full well they are passing off someone else's words or ideas as their own. Purchasing pre-written research papers through the mail or via the Internet is probably the most blatant form of intentional plagiarism (and the easiest to detect).
Some specific examples of intentional plagiarism:
(1) Passing off as one's own pre-written papers from the Internet or other sources.
(2) Copying an essay or article from the Internet, on-line source, or electronic database without quoting or giving credit.
(3) Cutting and pasting from more than one source to create a paper without quoting or giving credit.
(4) Allowing someone else to write the paper or do the work.
(5) Borrowing words or ideas from other students or sources (such as Cliff's Notes) without giving credit.
(6) Failing to put quotation marks around the words of others.
(7) Fabricating a quotation or a source.
(8) Pretending that an instant translation is one's own work. (Not only is such a practice dishonest--but the instant translations give miserable results. Click here for some examples.)
Unintentional Plagiarism occurs when writers and researchers use the words or ideas of others but fail to quote or give credit, perhaps because they don't know how. When in doubt, students must check with a teacher or librarian.
Some specific examples of plagiarism that may be unintentional:
(1) Paraphrasing poorly: changing a few words without changing the sentence structure of the original, or changing the sentence structure but not the words.
(2) Paraphrasing poorly: using words from the original that aren't part of one's vocabulary.
(3) Quoting poorly: putting quotation marks around part of a quotation but not around all of it, or putting quotation marks around a passage that is partly paraphrased and partly quoted.
(4) Citing poorly: omitting an occasional citation or citing inaccurately.
Source: http://mail.baylorschool.org/~jstover/plagiarism/resources.htm
