At Edge Video, psychologist Jonathan Haidt has given a briskly presented 30-minute lecture on what the moral sciences should look like in the 21st century. He opened his talk by indicating that we are now in a period of a new synthesis in ethics, meaning that in order to do meaningful work in the field of moral psychology, one has to draw from numerous other fields, including biology, computer science, mathematics, neuroscience, primatology and many other fields. The bottom line is that one needs to be careful to not attempt to reduce moral psychology to a single principle, as is often done by those who advocate that morality is a code word for a single test, such as welfare-maximization or justice-fairness. I have followed Jonathan Haidt’s work for several years now, and I am highly impressed with his breadth of knowledge, his many original ideas, and the way he (in keeping with his idea of what moral psychology should be like) synthesizes the work of numerous disparate fields of study. In this post, I am sharing my own notes from my viewing of heights two-part video lecture. In Haidt's approach, the sense of taste serves as a good metaphor for morality. There are only a few dominant bases for moral taste (akin to the four types of taste receptors), taste can be generally categorized as "good" or "bad," and despite the fact that there are a limited number of foundations for moral and sensory taste, there is plenty of room for cultural variation--every culture has its own approach to making good moral decisions (and making good tasting food). Haidt warns that those studying moral psychology should be careful to avoid two common errors that are well illustrated by two recent journal articles. The first article, titled "The Weirdest People in the World," indicates that most of the psychology research done in the entire world is done in the United States, and the subjects tend to be Western, educated, industrialized, rich and democratic ("WEIRD"). Not that one cannot do psychology with this homogenous group of subjects (typically college students), but one needs be careful to avoid generalizing to the entire world based upon a WEIRD set of subjects. In fact, WEIRD people tend to see the world much differently than people in many other cultures. They tend to see separate objects (versus relationships), and they tend to rely on analytical thinking (categories and laws, reason and logic) versus holistic thinking (patterns and context). Does this make us WEIRD people more accurate since we think in these analytical terms? Not necessarily, but before generalizing, we need to take it to heart that we live in an unusual culture. Haidt warns that this problem is exacerbated because our psychologists tend to surround themselves with similar-thinking others, and when this happens, the confirmation bias kicks in and they will inevitably find lots of evidence to condemn those who think differently. [More . . . ]