This slide is from a free PowerPoint that accompanied the text book Research Methods: A Tool for Life by Bernard Beins.
After ticking off a few landmark examples of unethical behavior in research, Beins has the temerity to suggest that one of the leading causes of unethical behavior is mental illness.
This man is a psychologist. And rather than taking responsibility for the deception, mistreatment of participants, and data falsification that runs rampant in his (and my) field, he has the nerve to throw mentally ill psychologists under the bus as the cause for all those problems instead.
Not only does this betray a really shallow understanding of human behavior and the motivations that undergird immoral acts, it also perpetuates an elitist, ableist, short-sighted lie that psychology is a discipline that's only suitable for "mentally healthy people". This isn't just wrong on moral, prejudicial grounds, it also makes us a more limited, grossly unempathic field full of people who do not understand mental illness, look down our noses at the mentally ill, and fail to take responsibility for our own ethical failings. It's disgusting and it's simply not borne out by any data whatsoever.