i think jealousy can be a cause for unethical behavior as jealousy will evoke someone to react
for example in the work place, if i am jealous of a person work performance and promotion i may do some thing unethical to sabotage
I think we have to accept that unethical behaviour isn't the same amongst all people. Just because you consider an activity unethical does not mean I view it unethical as well.
increased the employees' "moral awareness and prompted more ethical decisions," even if they were left unmonitored and were given high performance goals that had led others to cheat before.