It turns out that Rolls’s answer to Nagel’s (1974) question, "What is it like to be a bat?" is brusque: there is nothing it is like to be a bat . . . provided that bats don’t have a linguistically structured internal representational system that enables them to think about their first-order thoughts which are also linguistically structured. For phenomenal consciousness, a properly functioning system of higher-order linguistic thought (HOLT) is necessary (Rolls 1998, p. 262). By this criterion, not only (...) bats, but also a great portion of the animal kingdom, perhaps all animal species except humans, turn out to lack phenomenal consciousness. Indeed, even human babies, and perhaps infants before the early stages of acquiring their first language, are likely to lack such consciousness, if one considers the level of conceptual sophistication required by the HOLT hypothesis. In order to have a higher-order thought, one needs to have the concept of a. (shrink)

: Recent work in the area of ethics and animals suggests that it is philosophically legitimate to ascribe emotions to nonhuman animals. Furthermore, it is sometimes argued that emotionality is a morally relevant psychological state shared by humans and nonhumans. What is missing from the philosophical literature that makes reference to emotions in nonhuman animals is an attempt to clarify and defend some particular account of the nature of emotion, and the role that emotions play in a characterization of human (...) nature. I argue in this paper that some analyses of emotion are more credible than others. Because this is so, the thesis that humans and nonhumans share emotions may well be a more difficult case to make than has been recognized thus far. (shrink)

Rolls presents a theory of emotion based on the premise that emotions are evoked by events that are capable of being instrumental reinforcers and punishers. As support for this theory is drawn almost entirely from experiments in non-human primates, valuable insights into the relationship between punishment and reinforcement systems, and the nature of instrumentality, may have been overlooked.