Is self-plagiarism illegal?

Self-plagiarism is not a legal crime, but it is a serious violation of academic integrity and professional ethics. In a university setting, it can lead to failing grades, suspension, or expulsion.

Can I reuse a few sentences from my old paper?

Reusing even small sections of previous work without citation or instructor permission is generally considered self-plagiarism. Always check with your professor before recycling any portion of your past assignments.

How do I cite myself in APA format?

To cite your own unpublished work in APA, use your name and the year the original paper was written. Include it in your reference list as an 'Unpublished manuscript'.

What is self-plagiarism

Explainer4 min·Updated May 2024

What is self-plagiarism?

Self-plagiarism is the act of reusing your own previously submitted or published work in a new assignment without proper citation or authorization. While you own the intellectual property, academic institutions view 'recycling' work as a form of academic dishonesty because assignments are expected to contain original effort and new learning for each specific course.

Self-plagiarism vs. traditional plagiarism

Comparison table

Dimension	Traditional plagiarism	Self-plagiarism
Source	Someone else's work	Your own previous work
Primary issue	Theft of intellectual property	Deception regarding originality
Goal	To claim credit for others' ideas	To avoid doing new work
Detection	Plagiarism software (Turnitin)	Institutional databases/memory
University policy	Universally prohibited	Often requires instructor consent
Common name	Stealing	Double-dipping or recycling

Why self-plagiarism is an academic violation

Most students assume they cannot steal from themselves. However, academic credit is awarded for the process of learning and creating something new for a specific context. When you submit an old essay for a new class, you are essentially 'double-dipping' on credit. This misleads the instructor into believing you have conducted new research and developed new arguments when you have actually bypassed the learning requirements of the course. Furthermore, many journals and publishers hold the copyright to published works, meaning even the original author must cite themselves to avoid legal and ethical conflicts.

Examples of self-plagiarism in student writing

Example

Here is how self-plagiarism typically appears in a college setting compared to the correct approach.

Scenario: Using a previous research finding

Example

**The Self-Plagiarism Version:**
A student copies two paragraphs about the Great Depression from an essay they wrote in a freshman history class and pastes them into a junior-year economics paper without mentioning the previous work.

**The Correct Version:**
The student asks the economics professor if they can build upon their previous research. With permission, the student rewrites the section to fit the economic context and includes a citation: (Author, 2022). This acknowledges the ideas originated in a different academic context.

How to avoid self-plagiarism

Follow these practical steps to ensure your work remains original and ethical:

Always treat your own past work as a third-party source that requires a formal citation.
Consult your instructor before reusing any data, themes, or text from a previous course.
Focus on developing a new 'angle' for every assignment rather than looking for ways to reuse old content.
Use a plagiarism checker that compares your work against your own previous submissions if you are unsure about similarities.
If you must build on past research, summarize the old findings briefly and focus the majority of the new paper on fresh analysis.

Generate citations automatically

MLA, APA, and Chicago citations from any URL or DOI.

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