This file contains the Bibliography of my book Mindlessness.

I argue that we should give up the fight to rescue causal theories of action from fundamental challenges such as the problem of deviant causal chains; and that we should rather pursue an account of action based on the basic intuition that control identifies agency. In Section 1 I introduce causalism about action explanation. In Section 2 I present an alternative, Frankfurt’s idea of guidance. In Section 3 I argue that the problem of deviant causal chains challenges causalism in two (...) important respects: first, it emphasizes that causalism fails to do justice to our basic intuition that control is necessary for agency. Second, it provides countless counterexamples to causalism, which many recent firemen have failed to extinguish – as I argue in some detail. Finally, in Section 4 I argue, contra Al Mele, that control does not require the attribution of psychological states as causes. (shrink)

The paper considers and opposes the view that processes are best thought of as continuants, to be differentiated from events mainly by way of the fact that the latter, but not the former, are entities with temporal parts. The motivation for the investigation, though, is not so much the defeat of what is, in any case, a rather implausible claim, as the vindication of some of the ideas and intuitions that the claim is made in order to defend — and (...) the grounding of those ideas and intuitions in a more plausible metaphysics than is provided by the continuant view. It is argued that in addition to a distinction between events and processes there is room and need for a third category, that of the individual process, which can be illuminatingly compared with the idea of a substance. Individual processes indeed share important metaphysical features with substantial continuants, but they do not lack temporal parts. Instead, it is argued that individual processes share with substantial continuants an important property I call ‘modal robustness in virtue of form’. The paper explains what this property is, and further suggests that the category of individual process, thus understood, might be of considerable value to the philosophy of action. (shrink)

Thinking is overrated: golfers perform best when distracted and under pressure; firefighters make the right calls without a clue as to why; and you are yourself ill advised to look at your steps as you go down the stairs, or to try and remember your pin number before typing it in. Just do it, mindlessly. Both empirical psychologists and the common man have long worked out that thinking is often a bad idea, but philosophers still hang on to an intellectualist (...) picture of human action. This book challenges that picture and calls on philosophers to wake up to the power of mindlessness: it is our habits, skills and conventions that help us cope with a world way too diverse for us to hope to always reinterpret it. The book presents the empirical evidence that has been accumulating over the last few decades and offers a philosophical analysis of mindless phenomena such as habits, skilled activity, automatic actions, emotional and spontaneous reactions and social conventions, arguing that traditional philosophical theories of action should be revised to do justice to this forgotten but important part of our lives: when we act mindlessly, we are free and fully rational even though we neither deliberate nor are aware of what we are doing. (shrink)

I show that Pickard’s argument against the irresistibility of addiction fails because her proposed dilemma, according to which either drug-seeking does not count as action or addiction is resistible, is flawed; and that is the case whether or not one endorses Pickard’s controversial definition of action. Briefly, we can easily imagine cases in which drug-seeking meets Pickard’s conditions for agency without thereby implying that the addiction was not irresistible, as when the drug addict may take more than one route to (...) go meet her dealer. (shrink)

Volitionalism is a theory of action motivated by certain shortcomings in the standard causal theory of action. However, volitionalism is vulnerable to the objection that it distorts the phenomenology of embodied agency. Arguments for volitionalism typically proceed by attempting to establish three claims: (1) that whenever an agent acts, she tries or wills to act, (2) that it is possible for volitions to occur even in the absence of bodily movement, and (3) that in cases of successful bodily actions the (...) relation between volition and bodily movement is causal. I defend an argument for the second of these claims from an objection by Thor Grünbaum, but I show that several volitionalist arguments for the third are not compelling. I then argue that the dual aspect theory of action provides a better account of the relationship between an agent’s volition and the bodily movements she makes when she acts, insofar as it has the same advantages over the standard story as volitionalism without being open to the phenomenological objection. I also defend the dual aspect theory from an objection by A.D. Smith. Finally, I show why the dual aspect theory of action is a better alternative to volitionalism than the theory of action recently put forward by Adrian Haddock. In order to avoid the phenomenological objection Haddock suggests a disjunctive account of bodily movements. While disjunctivism should be taken seriously in the philosophy of action, on the dual aspect theory it is the category of volition, rather than bodily movement, that should receive a disjunctive analysis. (shrink)

In this paper I argue that there is an important anomaly to the causalist/compatibilist paradigm in the philosophy of action and free will. This anomaly, which to my knowledge has gone unnoticed so far, can be found in the philosophy of Harry Frankfurt. Two of his most important contributions to the field – his influential counterexample to the Principle of Alternate Possibilities and his ‘guidance’ view of action – are incompatible. The importance of this inconsistency goes far beyond the issue (...) of coherence within Frankfurt’s philosophy. I shall argue that this inconsistency represents an important anomaly within the causalist/compatibilist framework; so that we should start to seriously consider having to move on from the established paradigm. (shrink)

Starting from the assumption that one can literally perceive someone's anger in their face, I argue that this would not be possible if what is perceived is a static facial signature of their anger. There is a product–process distinction in talk of facial expression, and I argue that one can see anger in someone's facial expression only if this is understood to be a process rather than a product.

An influential philosophical conception of our mind’s place in the world is as a site for the states and events that causally mediate the world we perceive and the world we affect. According to this conception, states and events in the world cause mental states and events in us through the process of perception. These mental states and events then go on to produce new states and events in the world through the process of action. Our role is as hosts (...) for these states and events that causally mediate the states and events on the input side and those on the output side. (shrink)

Many situations in human life present choices between (a) narrowly preferred particular alternatives and (b) narrowly less preferred (or aversive) particular alternatives that nevertheless form part of highly preferred abstract behavioral patterns. Such alternatives characterize problems of self-control. For example, at any given moment, a person may accept alcoholic drinks yet also prefer being sober to being drunk over the next few days. Other situations present choices between (a) alternatives beneficial to an individual and (b) alternatives that are less beneficial (...) (or harmful) to the individual that would nevertheless be beneficial if chosen by many individuals. Such alternatives characterize problems of social cooperation; choices of the latter alternative are generally considered to be altruistic. Altruism, like self-control, is a valuable temporally-extended pattern of behavior. Like self-control, altruism may be learned and maintained over an individual's lifetime. It needs no special inherited mechanism. Individual acts of altruism, each of which may be of no benefit (or of possible harm) to the actor, may nevertheless be beneficial when repeated over time. However, because each selfish decision is individually preferred to each altruistic decision, people can benefit from altruistic behavior only when they are committed to an altruistic pattern of acts and refuse to make decisions on a case-by-case basis. (shrink)

Rachlin's thought-provoking analysis could be strengthened by greater openness to evolutionary interpretation and the use of the directed attention concept as a component of self-control. His contribution to the understanding of prosocial behavior would also benefit from abandoning the traditional (and excessively restrictive) definition of altruism.

Two conceptions of motivating reasons, i.e. the reasons for which we act, can be found in the literature: (1) the dominant 'psychological conception', which says that motivating reasons are an agent's believing something; and (2) the 'non-psychological' conception, the minority view, which says that they are what the agent believes, i.e. his beliefs. In this paper I outline a version of the minority view, and defend it against what have been thought to be insuperable difficulties - in particular, difficulties concerning (...) 'error cases' (cases where what the agent believes is false); and difficulties concerning the explanation of action. Concerning error cases, I argue that if we are motivated by something believed that is true, what motivates us to act is a motivating reason. By contrast, if we are motivated by something believed that is false, then what motivates us to act is merely an apparent motivating reason. Either way, what motivates us is, as the non-psychological conception says, what we believe and not our believing it. I offer an account of the relation between motivating reasons and the explanation of action, and argue that this account helps bring out two important points. One is that the fact that we often do, and indeed sometimes must, use explanations such as 'He did it because he believed that p' does not vindicate the psychological conception of motivating reasons. The other is that endorsing the non-psychological conception of motivating reasons does not commit one to a non-factive view of explanations of action. (shrink)

In this paper, I propose a theory of living organisms that captures the insights of both traditional Aristotelian hylomorphism and John Dupré's “biological processualism”. Like traditional Aristotelian hylomorphism, the proposed theory understands material objects to be comprised of both matter and form. Unlike contemporary structural varieties of hylomorphism, however, it does not understand the form of a material object to be a relation, configuration, or structure exhibited by its parts but an activity or process in which its matter is continuously (...) engaged. Following Mark Steen, I call the proposed theory “Hyloenergeism”. As a version of hylomorphism, hyloenergeism better captures the inherent dynamism of living organisms than contemporary structural approaches. And it does so not by abandoning the substantialist paradigm, as Dupré's biological processualism does, but by reconceptualizing the nature of material substances as possessing a processual core. Hyloenergeism, then, paves a middle way for those looking for a substance view of living organisms sensitive to the concerns raised by contemporary processualist philosophers of biology. (shrink)

Plausibly, agents act freely iff their actions are responses to reasons. But what sort of relationship between reason and action is required for the action to count as a response? The overwhelmingly dominant answer to this question is modalist. It holds that responses are actions that share a modally robust or secure relationship with the relevant reasons. This thesis offers a new alternative answer. It argues that responses are actions that can be explained by reasons in the right way. This (...) explanationist answer comes apart from the modalist answer. For it holds that actions are responses to reasons if they are explained by those reasons even if they don’t share a modally robust relationship. Explanationism thus offers a novel way of vindicating the intuition that alternative possibilities don’t matter to responding to reasons and (consequently) free agency. The key dialectical position the thesis develops is that both modalism and explanationism constitute attempts to capture he core type of relationship encoded by the notion of a response. Responses to reasons, at core, involve a non-accidental relationship between reason and action. We can either understand non-accidentality as a modal phenomenon – as a modally robust tracking between two facts. Or we can understand non-accidentality as an explanatory phenomenon – as a special explanatory relationship between two facts. According to my rival explanationist proposal, two facts share a non-accidental relationship iff we can give a unified explanation of why both obtain. Unified explanations are explanations of why [p&q] that cannot be decomposed into two (or more) separate independent explanations of p and of q. Consequently, according to explanationism about responding to reasons, actions are responses to reasons iff those reasons offer a rational explanation of the action that cannot be decomposed into separate independent components. (shrink)

The disappearing agent problem is an argument in the metaphysics of agency. Proponents of the agent-causal approach argue that the rival event-causal approach fails to account for the fact that an agent is active. This paper examines an analogy between this disappearing agent problem and the exclusion problem in the metaphysics of mind. I develop the analogy between these two problems and survey existing solutions. I suggest that some solutions that have received significant attention in response to the exclusion problem (...) have seen considerably less attention in response to the disappearing agent problem. For example, one solution to the exclusion problem is to reject the exclusion assumption. Analogously, one solution to the disappearing agent problem could be to deny the claim that the agent-causal approach and the event-causal approach are mutually exclusive. Similarly, proportionality theories of causation, a solution to the exclusion problem, can be transferred to the disappearing agent problem. After establishing the plausibility of the analogy between the two problems, I examine how this latter solution in particular can be transferred from the one problem to the other. (shrink)

What exactly is reasoning? Like many other philosophers, I shall endorse a broadly causal conception of reasoning. Reasoning is a causal process, in which one mental event (say, one’s accepting the conclusion of a certain argument) is caused by an antecedent mental event (say, one’s considering the premises of the argument). Just like causal accounts of action and causal accounts of perception, causal accounts of reasoning have to confront a version of what has come to be known as the problem (...) of deviant causal chains. In this paper, I shall propose an account of the nature of reasoning, incorporating a solution to the specific version of the deviant causal chains problem that arises for accounts of reasoning. One striking feature of my solution is that it requires that certain normative facts are causally efficacious. It might be thought that this feature will make my account incompatible with any plausibly naturalistic approach to understanding the mind. I shall argue that this is not so: my account of the nature of reasoning is quite compatible with plausible versions of naturalism. (shrink)

According to explanatory individualism, every action must be explained in terms of an agent's desire. According to explanatory nonindividualism, we sometimes act on our desires, but it is also possible for us to act on others' desires without acting on desires of our own. While explanatory nonindividualism has guided the thinking of many social scientists, it is considered to be incoherent by most philosophers of mind who insist that actions must be explained ultimately in terms of some desire of the (...) agent. In the first part of the paper, I show that some powerful arguments designed to demonstrate the incoherence of explanatory nonindividualism fail. In the second part of the paper, I offer a nonindividualist explanation of the apparent obviousness of belief-desire psychology. I argue that there are two levels of the intelligibility of our actions. On the more fundamental (explanatory) level, the question "Why did the agent do something?" admits a variety of folk-psychological categories. But there is another (formation-of-self) level, at which the same question admits only of answers that ultimately appeal only to the agent's own desires. Explanatory individualism results from the confusion of the two levels. (shrink)

In this paper, I discuss Christian Wolff’s conception of motivating and normative reasons. My aim is to show that in the discussion of error cases, Wolff pursues a strategy that is strikingly similar to the strategy of contemporary defenders of nicht-psychologist accounts of motivating reasons. According to many nicht-psychologist views, motivating reasons are facts. My aim is to show that Wolff’s motivation in pursuing this strategy is very different. The point is that due to his commitment to the Principle of (...) Sufficient Reason, Wolff has to show that error cases are compatible with the PSR. The issue is worth discussing because it is not yet sufficiently explored what motivating reasons are, according to Wolff, and how they relate, in substance, to normative reasons. Methodologically, my approach can be characterized as one of “mutual illumination”: I think it is possible to highlight some crucial ambiguities of Wolff’s conception against the backdrop of the contemporary conception of motivating reasons, but also to question the importance and role of the ontological question of what motivating reasons are in contemporary discussions against the backdrop of Wolff’s position. (shrink)

Many contemporary proponents of hylomorphism endorse a version of hylomorphism according to which the form of a material object is a certain kind of complex relation or structure. Structural approaches to form, however, seem not to capture form’s traditional role as the guarantor of diachronic identity, since more “dynamically complex” material objects, such as living organisms, seem to undergo, and survive, various structural changes over the course of their existence. As a result, some contemporary hylomorphists have looked to alternative, non-structural (...) approaches to form. One of the leading non-structural approaches is the powers approach, according to which the form of a material object is a certain kind of power continuously activated in the object or in its material parts. In this paper, I begin by offering an overview and assessment of this powers approach to form. I argue that while the powers approach captures some crucial elements for understanding the nature of more dynamically complex material objects, when we press on the details of the view we find that it actually points to a related, but importantly distinct, third approach to understanding form, according to which the form of a material object is a certain kind of activity or process in which the material object or its parts are continuously engaged. I call this third approach “Hyloenergeism”. In the second half of the paper, I consider what such a view of material objects might look like and what its principal virtues might be. (shrink)

The paper is a critical discussion of Sneddon’s recent proposal to revive ascriptivism in philosophy of action. Despite his declarations, Sneddon fails in his central task of giving an account of the distinction between actions and mre happenings. His failure is due to three major problems. First, the account is based on a misconceived methodology of “type” necessary and “token” sufficient conditions. Second, the “type” necessary condition he proposed is so weak that the connection that obtains between action and responsibility (...) also obtains between action and lack of responsibility. Third, neither the idea of responsibility nor the idea of defeating conditions is elucidated sufficiently to play any role in understanding what it is to be an action. (shrink)

Intellectualists hold that knowledge-how is a species of knowledge-that, and consequently that the knowledge involved in skill is propositional. In support of this view, the intentional action argument holds that since skills manifest in intentional action and since intentional action necessarily depends on propositional knowledge, skills necessarily depend on propositional knowledge. We challenge this argument, and suggest that instructive representations, as opposed to propositional attitudes, can better account for an agent’s reasons for action. While a propositional-causal theory of action, according (...) to which intentional action must be causally produced “in the right way” by an agent’s proposition-involving reasons, has long held sway, we draw on Elizabeth Anscombe’s insights offer a path toward an alternative theory of action. In so doing, we reject the implicitly Cartesian conception of knowledge at the core of the intentional action argument, while hanging on to the idea that mental states are representations of a certain kind. Our argument provides theoretical support for anti-intellectualism by equipping philosophers with an account of non-propositional, practical content. (shrink)

Argues that, in acting for a reason, one takes that reason to explain one's action, not to justify it: reasons for acting need not be seen "under the guise of the good". The argument turns on the need to explain the place of "practical knowledge" - knowing what one is doing - in intentional action. A revised and expanded version of this material appears in Part One of "Reasons without Rationalism" (Princeton, 2007).

This paper aims at discussing the usage by Davidson as to events of Quine's criterion of ontological commitment. According to Davidson, we are ontologically committed to the existence of events as individuals as we employ literally terms such as ‘Caesar’s death’, for instance. David-son extends this analysis to actions as well, since actions are human events. One of the consequences of this view is that psychology deals with individual events in a non-lawful way. An alternative view is here proposed, based (...) on a complementary criterion, namely ontological den-sity, according to which from the point of view of a given theory, we can always distinguish between events (or phenomena) and individuals (entities) among the overall occurrences described by the theory. Some consequences of this alternative view of psychology as a science dealing lawfully with general human events are also explored here. (shrink)

Dual process theorists in psychology maintain that the mind’s workings can be explained in terms of conscious or controlled processes and automatic processes. Automatic processes are largely nonconscious, that is, triggered by environmental stimuli without the agent’s conscious awareness or deliberation. Automaticity researchers contend that even higher level habitual social behaviors can be nonconsciously primed. This article brings work on automaticity to bear on our understanding of habitual virtuous actions. After examining a recent intuitive account of habitual actions and habitual (...) virtuous actions, the author offers her own explanation in terms of goal-dependent automaticity. This form of automaticity provides an account of habitual virtuous actions that explains the sense in which these actions are rational, that is, done for reasons. Habitual virtuous actions are rational in the sense of being purposive or goal-directed and are essentially linked with the agent’s psychological states. Unlike deliberative virtuous actions, the agent’s reasons for habitual virtuous actions are not present to her conscious awareness at the time of acting. (shrink)

The aim of this thesis is to increase our ontological understanding of musical works in two ways. We’ll increase our understanding of their categorial nature and we’ll increase our understanding of what the identity of each musical work consists in. In chapter 1, I introduce the basic question of the thesis: what are musical works? This question is broken down into four separate questions which guide the structure and argument of the thesis. One question asks if musical works exist, the (...) other asks about the ontological category to which musical works belong. In the first half of the thesis, I argue that musical works exist and that the best explanation of their features is given by assigning them to the category of universals. I argue for this conclusion by elaborating and defending a view according to which musical works are properties. I then show that this conception is superior to the strongest rivals. One rival takes musical works to be historical individuals (Rohrbaugh 2003). The other takes them to be actions of composition (Davies 2004). In chapter 6, I turn to two questions about identity. One question asks about the identity criteria for musical works, the other question asks for an explanation of musical work identity. In the remainder of chapter 6, I argue by reference to contextualist intuitions that a superficially appealing view, sonicism is problematic. The critique of sonicism is used to draw out certain contextualist assumptions that our ontology of music ought to explain. In chapter 7, I examine a family of Levinsonian contextualist proposals. I argue that the original formulations (Levinson 1980) give incorrect results, and that attempts to modify them (Davies, S: 2001) slip into obscurity, or undermine the aims of the project (Levinson 1992). I end chapter 7 by presenting the performance theory in a more flattering light. I argue that as a theory of musical work identity, the performance theory is the best on the market because it overcomes the problems associated with the Levinsonian views and deepens our understanding of contextualist intuitions. In chapter 8, I present an account of the ontology of music which integrates the property theory of category with the performance theory of identity by construing musical works as impure relational properties. I then defend the integrated account against various objections. In this defence, I elaborate a view of compositional actions as belonging to the ontological category of processes. (shrink)

Abstract. For the past two decades, I have been developing an integrative Christian marriage theory, based in part on a grounding concept of natural law and an overarching theory of covenant. The natural law part of this theory starts with an account of the natural facts, conditions, interests, needs, and qualities of human life, interaction, and generation—what I call the “premoral” goods or realities of life. It then identifies the natural inclinations of humans to form enduring and exclusive monogamous marriages (...) and to preserve these units as the central site for intimacy, procreation, and nurture of children. In this paper, I first summarize this natural law theory of marriage and then compare it to the formulations of other modern Christian thinkers. I also defend this theory against various modern critics of natural law—in part by reinterpreting some traditional natural law teachings that in my view have been misunderstood, in part by looking at the interesting convergences between the insights into sex, marriage, and family life offered by contemporary Christian theological ethicists and by evolutionary biologists and biological anthropologists. (shrink)

This paper focuses on two conflations which frequently appear within the philosophy of history and other fields concerned with action explanation. The first of these, which I call the Conflating View of Reasons, states that the reasons for which we perform actions are reasons why (those events which are) our actions occur. The second, more general conflation, which I call the Conflating View of Action Explanation, states that whatever explains why an agent performed a certain action explains why (that event (...) which was) her action occurred. Both conflations ignore the fact that there are at least two distinct objects that legitimately qualify as objects of action explanation2. As Jennifer Hornsby (1993) has previous suggested, one thing we might wish to explain is ‘why did A do what she did?’ another is, ‘why did the event of her doing it occur?’ -/- I shall argue that when these two views are combined they give rise to a futile debate about explanation in the philosophies of history and the social sciences, and to an almost identical debate in moral psychology and the philosophy of mind. In so doing, I shall also examine a proposed distinction between explaining a phenomenon, and rendering it intelligible. I conclude by distinguishing between four different objects of historical understanding, each of which is to be understood in the light of the aforementioned distinctions between event and thing done, and explanation and intelligibility. (shrink)

The lack of consensus on how to characterize humans’ capacity for belief reasoning has been brought into sharp focus by recent research. Children fail critical tests of belief reasoning before 3 to 4 years (Wellman, Cross, & Watson, 2001; Wimmer & Perner, 1983), yet infants apparently pass false belief tasks at 13 or 15 months (Onishi & Baillargeon, 2005; Surian, Caldi, & Sperber, 2007). Non-human animals also fail critical tests of belief reasoning but can show very complex social behaviour (e.g., (...) Call & Tomasello, 2005). Fluent social interaction in adult humans implies efficient processing of beliefs, yet direct tests suggest that belief reasoning is cognitively demanding, even for adults (e.g., Apperly, Samson & Humphreys, 2005). We interpret these findings by drawing an analogy with the domain of number cognition, where similarly contrasting results have been observed. We propose that the success of infants and non-human animals on some belief reasoning tasks may be best explained by a cognitively efficient but inflexible capacity for tracking belief-like states. In humans this capacity persists in parallel with later-developing, more flexible but more cognitively demanding theory of mind abilities. (shrink)

In the biological realm, a complete explanation of a trait seems to include an explanation in terms of function. It is natural to ask of some trait, "What is its function?" or "What purpose in the organism does the particular trait serve?" or "What is the goal of its activity?" There are several views concerning the appropriate definition of function for biological matters. Two popular views of function with respect to living things are Cummins' organizational account and the Griffiths/Godfrey-Smith modern (...) history account. Whereas Cummins argues that a trait functions so as to contribute to the general organization of some organism's present structure, Griffiths, and Godfrey-Smith argue that a trait functions because of its fitness with respect to the organism's recent evolutionary history. In this paper, I show how these accounts can be made compatible and compliment one another. Given that structure, organization, operational flexibility, function, and evolutionary history are all factors to be considered in an organism's makeup, we should expect that the traits of an organism function the way they do because such traits presently contribute to the overall organization of the organism (Cummins) as well as were selected for in the organism's species' recent ancestry (Griffiths/Godfrey-Smith). (shrink)

Virtuous actions seem to be both habitual and rational. But if we combine an intuitive understanding of habituality with the currently predominant paradigm of rational action, these two features of virtuous actions are hard to reconcile. Intuitively, acting habitually is acting as one has before in similar contexts, and automatically, that is, without thinking about it. Meanwhile, contemporary philosophers tend to assume the truth of what I call the reasons theory of rational action, which states that all rational actions are (...) actions for reasons. Whilst interpretations of this phrase are disputed, I argue that neither of the two leading views – which I call reasons internalism and reasons externalism – makes room for habitual actions to count as actions for reasons; by the reasons theory, they cannot be rational either. I suggest one way of effecting the reconciliation which, whilst it allows us to keep the reasons theory, requires us to conceive of reasons as even more radically external than current externalists believe them to be. (shrink)

According to Foxall (2007), simple acts may best be explained in terms of behavior of the organism as a whole, but complex behavioral patterns, usually described by mental terms, can only be explained by neurocognitive psychology, in which the mind is conceived as an internal mechanism. This proposed division of psychological labor is faulty, first because there is no distinct dividing line between simple (non-mental) and complex (mental) behavior, and second because behavioral psychology alone or neurocognitive psychology alone can describe (...) both simple and complex behavioral patterns. The neurocognitive approach to the mind is based on a science of efficient causes. A post-Skinnerian behavioral approach to the mind, "teleological behaviorism," is based on a science of final causes. Teleological behaviorism studies mental life itself while neurocognitivism studies its underlying mechanism. Both are required for a complete understanding of the mind. (shrink)