According to an article in The Chronicle of Higher Education, The University of Alabama at Birmingham conducted a needs assessment of graduate students on research ethics and found that the students did not feel confident in recognizing self plagiarism. The UAB students are not alone—senior researchers can have the same problem, as we described last Fall when writing about Professor Wang at the Montreal Heart Institute.
UAB revised its plagiarism workshop, according to the article, to include interactive exercises to help students identify plagiarism. Their online plagiarism policies have not been similarly updated and we do not know, whether this workshop covered images as well as text and tables.
For our schema on types of image falsification, including self plagiarism, see Falsification Tables.