8. Require a metalearning essay. On the day you collect the papers, have students write an in-class essay about what they learned from the assignment. What problems did they face and how did they overcome them? What research strategy did they follow? Where did they locate most of their sources? What is the most important thing they learned from investigating this subject? For most students, who actually did the research paper, this assignment will help them think about their own learning. It also provides you with information about the students' knowledge of their papers and it gives you a writing sample to compare with the papers. If a student's knowledge of the paper and its process seems modest or if the in-class essay quality diverges strikingly from the writing ability shown in the paper, further investigation is probably warranted.
Some academic journals have codes of ethics that specifically refer to self-plagiarism. For example, the Journal of International Business Studies .  Some professional organizations like the Association for Computing Machinery (ACM) have created policies that deal specifically with self-plagiarism.  Other organizations do not make specific reference to self-plagiarism such as the American Political Science Association (APSA). The organization published a code of ethics that describes plagiarism as "...deliberate appropriation of the works of others represented as one's own." It does not make any reference to self-plagiarism. It does say that when a thesis or dissertation is published "in whole or in part", the author is "not ordinarily under an ethical obligation to acknowledge its origins."  The American Society for Public Administration (ASPA) also published a code of ethics that says its members are committed to: "Ensure that others receive credit for their work and contributions," but it makes no reference to self-plagiarism. 
If schools wish to impress upon their students how serious an offense plagiarism is, they might start with an explanation of the word’s history. Plagiarize (and plagiarism ) comes from the Latin plagiarius “kidnapper.” This word, derived from the Latin plaga (“a net used by hunters to catch game”), extended its meaning in Latin to include a person who stole the words, rather than the children, of another. When plagiarius first entered English in the form plagiary , it kept its original reference to kidnapping, a sense that is now quite obsolete.