Kevin Patrick Tobia

Moral Intuitions: Are Philosophers Experts?

Recently psychologists and experimental philosophers have reported findings showing that in some cases ordinary people’s moral intuitions are affected by factors of dubious relevance to the truth of the content of the intuition. Some defend the use of intuition as evidence in ethics by arguing that philosophers are the experts in this area, and philosophers’ moral intuitions are both different from those of ordinary people and more reliable. We conducted two experiments indicating that philosophers and non-philosophers do indeed sometimes have different moral intuitions, but challenging the notion that philosophers have better or more reliable intuitions.

Normative Judgments and Individual Essence.

A growing body of research has examined how people judge the persistence of identity over time-that is, how they decide that a particular individual is the same entity from one time to the next. While a great deal of progress has been made in understanding the types of features that people typically consider when making such judgments, to date, existing work has not explored how these judgments may be shaped by normative considerations. The present studies demonstrate that normative beliefs do appear to play an important role in peoples beliefs about persistence. Specifically, people are more likely to judge that the identity of a given entity (e.g., a hypothetical nation) remains the same when its features improve (e.g., the nation becomes more egalitarian) than when its features deteriorate (e.g., the nation becomes more discriminatory). Study 1 provides a basic demonstration of this effect. Study 2 shows that this effect is moderated by individual differences in normative beliefs. Study 3 examines the underlying mechanism, which is the belief that, in general, various entities are essentially good. Study 4 directly manipulates beliefs about essence to show that the positivity bias regarding essences is causally responsible for the effect.

The effects of cleanliness and disgust on moral judgment

Recent experimental studies in cognitive science report the influence of “disgust” and “cleanliness” manipulations on moral judgment, yet little attention has been given to interpreting these studies together or developing models of the causal influence of cleanliness and disgust manipulations on moral judgment. I propose considerations for the causal modeling of these effects. The conclusions are not decisive in favor of one theory of disgust and cleanliness, but suggest several distinct causal roles of disgust- and cleanliness-type manipulations. The incorrect views, I argue, are those that posit causal effects from a single common cognitive mechanism for both disgust and cleanliness.