We provide an account of chimpanzee-specific agency within the context of philosophy of action. We do so by showing that chimpanzees are capable of what we call reason-directed action, even though they may be incapable of more full-blown action, which we call reason-considered action. Although chimpanzee agency does not possess all the features of typical adult human agency, chimpanzee agency is evolutionarily responsive to their environment and overlaps considerably with our own. As such, it is an evolved set of capacities (...) for goal-directed behavior, which solves problems that chimpanzees naturally encounter. Thus, it ought not be understood as a deficient instance of human agency. (shrink)

I offer a novel interpretation of Aristotle's psychology and notion of rationality, which draws the line between animal and specifically human cognition. Aristotle distinguishes belief (doxa), a form of rational cognition, from imagining (phantasia), which is shared with non-rational animals. We are, he says, “immediately affected” by beliefs, but respond to imagining “as if we were looking at a picture.” Aristotle's argument has been misunderstood; my interpretation explains and motivates it. Rationality includes a filter that interrupts the pathways between cognition (...) and behavior. This prevents the subject from responding to certain representations. Stress and damage compromise the filter, making the subject respond indiscriminately, as non-rational animals do. Beliefs are representations that have made it past the filter, which is why they can “affect [us] immediately.” Aristotle's claims express ceteris paribus generalizations, subject to exceptions. No list of provisos could turn them into non-vacuous universal claims, but this does not rob them of their explanatory power. Aristotle's cognitive science resolves a tension we grapple with today: it accounts for the specialness of human action and thinking within a strictly naturalistic framework. The theory is striking in its insight and explanatory power, instructive in its methodological shortcomings. (shrink)

This paper aims to propose and justify a framework for understanding the concept of personhood in both biological and artificial entities. The framework is based on a set of requirements that make up a suitable cognitive architecture for an entity to be considered a person, including the ability to have propositionally structured intentional states, having a form of sensory capabilities, and having a means of interacting with the environment. The case of individuals in a persistent vegetative state, as studied by (...) Owen, serves as an example to show the importance of each of these requirements and the possibility of a "hybridization" of personhood. The proposed set of requirements provide a complete framework for understanding the concept of personhood and highlight the significance of cognitive architecture in determining personhood. (shrink)

The goal of this paper is to establish a hierarchical level of deception which does not apply only to humans and non-human animals, but also to the rest of the living world, including plants. We will follow the hierarchical categorization of deception, set forth by Mitchell (1986), in which the first level of deception starts with mimicry, while the last level of deception includes learning and intentionality, usually attributed to primates. We will show how such a hierarchy can be attributed (...) to bacteria, plants, and fungi, see that self-deception is not inherent only to humans, and then connect the evolutionary roots of deception with the philosophical notion of intentionality. (shrink)

De acordo com a interpretação mais comum na literatura filosófica, Donald Davidson – que celebremente afirmou que “uma criatura não pode ter pensamentos a menos que tenha uma linguagem” – nega que criaturas não linguísticas são criaturas pensantes. No entanto, neste artigo argumento que esta interpretação é errada. Analisando atentamente os argumentos de Davidson, procuro mostrar que ele não está a argumentar que criaturas não linguísticas não podem possuir pensamentos; em vez disso, defendo que ele está simplesmente a afirmar que (...) na ausência de linguagem as atribuições de pensamento não podem ser vistas como mais do que meras ficções úteis que permitem explicar com êxito o comportamento daquelas criaturas. (shrink)

My dissertation addresses the question "do desires provide reasons?" I present two independent lines of argument in support of the conclusion that they do not. The first line of argument emerges from the way I circumscribe the concept of a desire. Complications aside, I conceive of a desire as a member of a family of attitudes that have imperative content, understood as content that displays doability-conditions rather than truth-conditions. Moreover, I hold that an attitude may provide reasons only if it (...) has truth-evaluable content. Insofar as desires lack truth-evaluable content, I hold that the content of a desire has the wrong kind of logical structure to provide reasons. My second line of argument claims that even if a desire did have truth-evaluable content, it would not follow that desires provide reasons. This is because a desire has no more rational significance than a guess or coin-flip. My argument relies on what I call the non-substitutability principle, the thesis that (all things being equal) one cannot substitute something that lacks rational significance, relative to some attitude, A, for something that has rational significance, relative to A, and leave the rational standing of A unchanged. For example, one cannot substitute the guess that P (i.e., something that lacks rational significance relative to the belief that P) for the perception that P (i.e., something that is rationally significant relative to the belief that P) without altering the rational standing of the belief. I argue that when the non-substitutability principle is applied to a desire that gives rise to an intention, it turns out that one can always substitute a guess or coin-flip (i.e., something that lacks rational significance relative to the intention) for the desire, without altering the rational standing of the intention. I take this to show that desires are not rationally significant relative to the intentions to which they give. (shrink)