If so, I failed to understand "but."
Is it morally wrong to take a paper-clip from your office?
Is it morally wrong to steal money from your co-worker?
Is it morally wrong to stab your employer?
In the ab-sence of mitigating circumstances, most individuals are likely to agree that all three actions are wrong, but that they increase in heinousness. Psychologists have studied moral evaluations and moral inferences for many years,
but they have yet to converge on a single comprehen-sive theory of these processes
Yes, it refers to the three actions.
All three are wrong. But all three are not equally heinous. They are equal, yet different. Hence the "but," to indicate the contrast.