How do you define the two terms? I’m genuinely curious since the definitions I’ve seen for the terms imply that it is a type of plagiarism, but they definitely don’t have the same connotations.
Plagiarism is misrepresenting someone elses’ work as your own, so wouldn’t having a ghostwriter write “your” article still be plagiarism regardless?
The paper for the trolly problem has some interesting details. In experiment 2, those who considered themselves worse at the foreign language were more likely to make the utilitarian choice, which indicates that it might just be a matter of proficiency in the language, rather than whether or not it is the participant’s primary language.
Self-plagiarism to me is more of a related but separately defined term from “true plagiarism,” but defining it based on work rather than author does make a lot of sense.