Srivas Prasad in Accidental Blogger:
Jonathan Haidt is a moral psychologist best known for his work on the
moral foundations, identifying the dimensions along which peoples' moral responses vary. The most fundamental moral concerns of human beings include, he says, care or harm, fairness or cheating, liberty or oppression, loyalty or betrayal, authority or subversion, and sanctity or degradation. The neat fact uncovered by his research is that not all people weigh these dimensions of morality seriously, that whilst conservatives bring all these dimensions to bear upon moral deliberation, liberals and libertarians use only the first three. The ''money'' plot is
here, showing how much people of different political orientations care about a given moral concern. A significant portion of Haidt's
new book, ''The Righteous Mind'' is devoted to explaining these dimensions and findings.
An important concern for Haidt is that liberals and conservatives in contemporary America are increasingly divided (his book is subtitled ''Why Good People Are Divided by Politics and Religion''), and he thinks his moral dimensions help explain why. We simply respond to different moral criteria. We have different ''moral taste-buds'', he says, in an image used repeatedly in the book. It is not just moral disagreement he is interested in however, but moral incomprehension, the fact that we can literally fail to understand what someone on the opposite side might be thinking, or why he isn't a moral monster just because we disagree with him. Here he thinks a significant portion of the blame rests with the liberal side of the divide.
More problematic is the reality that the human genome is still a vast catalogue of the unknown and scarcely known. The Human Genome Project’s most startling finding was that human genes, as currently defined, make up less than 2 percent of all the DNA on the genome, and that the total number of genes is relatively small. Scientists had predicted there might be 80,000 to 140,000 human genes, but the current tally is fewer than 25,000 — as one scientific paper put it, somewhere between that of a chicken and a grape. The remaining 98 percent of our DNA, once dismissed as “junk DNA,” is now taken more seriously. Researchers have focused on introns, in the gaps between the coding segments of genes, which may play a crucial role in regulating gene expression, by switching them on and off in response to environmental stimuli. Gene regulation, whether by introns or by regulator genes, forms one aspect of the burgeoning field of epigenetics, which concerns itself with the process of differential gene expression. In a classic study published in 2004, biologists at McGill University in Montreal identified a regulatory sequence in rat pups that lowered stress hormone production when the mother groomed them; their production of the hormone stayed low throughout their lives. Moreover, the researchers could adjust the gene in healthy adults to increase their stress, and in agitated adults to lower it. Though not their intention, the study provided the genetic evidence to prove Freud right: what happens in childhood has a lasting, though theoretically reversible, biological effect on adult behaviour.
