Online research in philosophy

Aiming to circumvent metaphor-prone properties of natural language, Chapman, Kim, Susskind, and Anderson (2009) recently reported evidence for morally induced activation of the levator labii region (manifest as an upper lip raise and a nose wrinkle), also implicated in responding to bad tastes and contaminants. Here we point out that the probative value of this type of evidence rests on a particular (and heavily contested) account of facial movements, one which holds them to be “expressions” or automatic read-outs of internal (...) states. We also observe a largely neglected difference between morally induced disgust and moral disgust proper, arguing that data such as Chapman et al.’s (2009) provide evidence only for the former. (shrink)

Forensic science error rates are needlessly high. Applying the perspective of veritistic social epistemology to forensic science could produce new institutional designs that would lower forensic error rates. We make such an application through experiments in the laboratory with human subjects. Redundancy is the key to error prevention, discovery, and elimination. In the “monopoly epistemics” characterizing forensics today, one privileged actor is asked to identify the truth. In “democratic epistemics,” several independent parties are asked. In an experiment contrasting them, democratic (...) epistemics reduced the rate at which biased observers obscured the truth by two-thirds. These results highlight, first, the potential of “epistemic systems design,” which employs the techniques of economic systems design to address issues of veracity rather than efficiency, and second, the value of “experimental epistemology,” which employs experimental techniques in the study of science. (shrink)

Although provocative, the data reported in Henrich et al.'s target article suffer from limitations, including the fact that the “selfishness axiom” is not an interesting null hypothesis, and the intrinsic limitations of quasi-experimental designs, in which random assignment is impossible. True experiments, in the laboratory or in the field, will continue to be crucial for settling core issues associated with human economic behavior.

Methods in experimental economics are reminiscent of the methods employed by behaviorists in the first half of the twentieth century. Empirical and conceptual progress led the field of psychology away from the principles of behaviorism, and experimental economists should consider whether the criticisms leveled against behaviorists might apply equally to them.