Moral Flynn effect
Steven Pinker's recent book “Better Angels of Our Nature” argues that our modern era is far less violent and cruel than any previous era in human history, and this thesis is backed up by convincing research and data. One of the challenges for Pinker as an anthropologist is to explain what has brought this about. A reasons he gives is that our increased ability of abstract reasoning has led to better moral commitments, what he calls the 'moral Flynn effect'. Peter Singer explains this in his review of Pinker's book:
"Pinker’s claim that reason is an important factor in the trends he has described relies in part on the “Flynn effect” — the remarkable finding by the philosopher James Flynn that ever since I.Q. tests were first administered, the scores achieved by those taking the test have been rising. The average I.Q. is, by definition, 100; but to achieve that result, raw test scores have to be standardized. If the average teenager today could go back in time and take an I.Q. test from 1910, he or she would have an I.Q. of 130, which would be better than 98 percent of those taking the test then. Nor is it easy to attribute this rise to improved education, because the aspects of the tests on which scores have risen most do not require a good vocabulary or even mathematical ability, but instead test powers of abstract reasoning. One theory is that we have gotten better at I.Q. tests because we live in a more symbol-rich environment. Flynn himself thinks that the spread of the scientific mode of reasoning has played a role.
Pinker argues that enhanced powers of reasoning give us the ability to detach ourselves from our immediate experience and from our personal or parochial perspective, and frame our ideas in more abstract, universal terms. This in turn leads to better moral commitments, including avoiding violence. It is just this kind of reasoning ability that has improved during the 20th century. He therefore suggests that the 20th century has seen a “moral Flynn effect, in which an accelerating escalator of reason carried us away from impulses that lead to violence” and that this lies behind the long peace, the new peace, and the rights revolution."