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If you would like to check if a particular book or journal is in the Turnitin database then you can check this on the iThenticate website.
Why have students originality scores increased after the due date?
Instructors have the option to allow students the ability to resubmit papers to an assignment and get updated Originality Reports for the newly submitted drafts (e.g. the assignment must be set to “Generate Originality Reports for student submissions: immediately (can overwrite report until due-date).” The report that is immediately generated and provided to the student (i.e. *before* the due date of the assignment) does NOT include matches to other student papers in the SAME assignment. Before the assignment due date passes, the report only includes matches to existing student papers on the Turnitin database, journals and publications, and internet sources. The Originality Report is completely and automatically re-generated for ALL papers in the assignment after the due date has passed, thus comparing papers between students in the *same* class/assignment. This may result in the Similarity Index (percentage), displayed to the student at the time of submission, to be different to that which is displayed after the due date has passed. For example, if a student had collaborated with another student in the same class/assignment, there would be a match between those papers, so the percentage may increase.
If late submissions have been allowed to be made after the due date of the assignment, the late-submitted paper will be added to the database immediately. The report generated for that late submission *will* search every other paper already submitted to the assignment (i.e. the papers submitted on-time). The assignment will *NOT* regenerate reports for the already-submitted papers just because a student submits late. So, the reports for the "submitted-on-time" papers will not consider or include the late-submission in their assessments.
Technical
If students resubmit an assignment, won’t it show up as a 100% match?
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