This past semester has seen an unusually high number of students plagiarizing in one of the subjects I teach. To be specific, it was five times the previous maximum I had seen. This has lead me down the path of digging into ways to reduce plagiarism from my students.
I read this question which was great and had several good answers but it was broadly focused. I would like to dig a bit deeper into one specific area: How can assessment design be used to minimize plagiarism?
I realize that exams are less likely to have plagiarism but I want to avoid those because they are timed and I don't want my students to be assessed in non-real-world situations like that. So, I want the assessments to be take-home but I don't want to put more constraints on this question.
I really want to know what research has been done showing the effect of different assessment design and how it has impacted student-plagiarism (with a focus on what minimizes plagiarism)?