If you judged case 1 as permissible, case 2 as obligatory, and case 3 as forbidden, then you are like the 1,500 subjects around the world who responded to these dilemmas on a Web-based moral sense test (www.moral.wjh.harvard.edu). If morality is God's word, atheists should judge these cases differently from religious people, and their responses should rely on different types of justification.
For example, because atheists supposedly lack a moral compass, they should be guided by pure self-interest and walk by the drowning child. But there were no statistically significant differences between subjects with or without religious backgrounds, with approximately 90 percent of subjects saying that it is permissible to flip the switch on the boxcar, 97 percent saying that it is obligatory to rescue the baby, and 97 percent saying that is forbidden to remove the healthy man's organs.
When asked to justify why some cases are permissible and others forbidden, subjects are either clueless or offer explanations that cannot account for the relevant differences. Importantly, those with a religious background are as clueless or incoherent as atheists.
These studies provide empirical support for the idea that, like other psychological faculties of the mind, including language and mathematics, we are all endowed with a moral faculty that guides our intuitive judgments of right and wrong. These intuitions reflect the outcome of millions of years in which our ancestors have lived as social mammals, and are part of our common inheritance.
Our evolved intuitions do not necessarily give us the correct or consistent answers to moral dilemmas. What was good for our ancestors may not be good today. But insights into the changing moral landscape, in which issues like animal rights, abortion, euthanasia and international aid have come to the fore, have not come from religion, but from careful reflection on humanity and what we consider a life well lived.
In this respect, it is important for us to be aware of the universal set of moral intuitions so that we can reflect on them and, if we choose, act contrary to them. We can do this without blasphemy, because it is our own nature, not God, that is the source of our morality.
Marc Hauser is professor of psychology and director of the Primate Cognitive Neuroscience Laboratory at Harvard University. Peter Singer is professor of bioethics at Princeton University.
Copyright: Project Syndicate
RSS