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Turnitin
Turnitin is an anti-plagiarism service integrated into Canvas that checks student papers against public web sites, academic databases, and previously submitted student papers to Turnitin. It also detects writing that has been generated by artificial intelligence (AI) sites like ChatGPT.
Turnitin is used to not only determine if students are copying someone else’s work, but it is also used as a deterrent to cheating. Instructors can choose to use Turnitin when creating writing assignments in Canvas.
If they so choose, each student’s submission will be checked before returning a similarity report and an AI report. These reports shows what has and has not been copied and what has and has not been detected as written by AI, respectively. It is then up to the instructor to determine if there is a problem. Instructors also have the ability to copy and paste any student text in Canvas, such as discussion board postings, and manually submit it to Turnitin.
When writing assignment instructions, instructors should tell students that their submissions will be checked for plagiarism. You can include a link to Turnitin's user guide for students. You should also include a link to the LPC Academic Honesty Statement, and somewhere in your course, include a link to a student video on plagiarism.
Anti-Plagiarism
To determine if a student plagiarized, and how much, a similarity report will be available in the SpeedGrader. To learn about similarity reports, along with learning how to set up assignments for Turnitin, visit the Turnitin user guide for instructors.
Las Positas College has resources on the web that help faculty with preventing plagiarism in their classes and educate students on plagiarism.
- Reading and Writing Center's Preventing Plagiarism page
- LPC Library's Citation Help page on plagiarism
The college's Academic Integrity site has a variety of resources about plagiarism and cheating in general.
AI Detection
Setting up an assignment in Canvas to detect AI is no different than setting up an
assignment with Turnitin enabled. After students submit their assignments, just click
the Turnitin results icon in the SpeedGrader, and you'll see the AI writing detection
indicator (a blue box with a percentage). Click that to see what Turnitin has detected
as being generated by AI.
Some other key points about the AI detector:
- Turnitin claims to be 98% confident that what it detects (by highlighted text in the report) has been generated by AI. If it's not 98% confident, the text passages won't be highlighted.
- Only student submissions after April 4 are automatically checked for AI. If you suspect a submission prior to April 4 was AI-generated, the student's work has to be resubmitted.
- Only papers written in English can be detected for AI by Turnitin.
- Only papers written in long-form can be detected by AI. This includes essays with actual sentences, not writing such as bullet points or numbered lists. It also won't detect poetry, scripts, or code.
- Students will not be able to see the AI writing detection indicator that shows you the percentage that might have been AI generated, nor can they see the report.
- Turnitin currently does not do a very good job detecting AI-generated content that has been paraphrased by the student or a web-based tool. However, its enhanced tool, to be released in 2024, is expected to be much better.
- In order for a submission to generate an AI writing report and percentage, the submission
needs to meet the following requirements:
- File size must be less than 100 MB
- File must have at least 150 words of prose text in a long-form writing format
- Files must not exceed 15,000 words
- Accepted file types: .docx, .pdf, .txt, .rtf
If you want to see Turnitin's AI detection process in action, view this video.
Other AI-Detection Resources
- FAQs for Turnitin’s AI writing detection capabilities
- AI Writing Detection Landing Page
- Presentation: Turnitin AI Updates
- How to guide
- Video: Turnitin’s AI Writing Detection: An introduction for educators and administrators
This section will be updated as Turnitin updates its AI detector.
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