This paper focuses on three theories of personal identity that incorporate the idea that personal identity is the result of a person’s adopting certain attitudes towards certain mental states and actions. I call these theories subjective theories of personal identity. I argue that it is not clear what the proponents of these theories mean by “personal identity”. On standard theories, such as animalism or psychological theories, the term “personal identity” (...) refers to the numerical identity of persons and its analysis provides the persistence conditions for persons. I argue that if the subjective theories purport to provide a criterion of numerical personal identity, they fail. A different interpretation may suggest that they purport to provide a non-numerical type of identity for the purpose of providing plausible analyses of certain identity-related practical concerns. I argue that the criteria the subjective theories provide fail to capture several of the identity-related concerns. As a result, this interpretation must be rejected as well. (shrink)

The problem of diachronic personal identity is this: what explains why a person P1 at time T1 is numerically identical with a person P2 at a later time T2, even if they are not at those times qualitatively identical? One traditional explanation is the soul theory, according to which persons persist in virtue of their nonphysical souls. I argue here that this view faces a new and arguably insuperable dilemma: either souls, like physical bodies, change over time, (...) in which case the soul theory faces an analogue problem of diachronic soul identity, or souls, unlike physical bodies, do not change over time, in which case the soul theory cannot explain why souls relate to particular bodies over time and so at best only partially explains personal identity. I conclude that the soul theory fares no better than physicalist-friendly accounts of personal identity such as bodily- or psychological-continuity-based views. (shrink)

In exploring personal identity, we are confronted with a perplexing dilemma: What is it in virtue of which a person's younger self is identical to his later self? Personal identity is a significant concept overarching philosophy, psychology, neuroscience, and ethics (Glover, 1988). It provoked debates amongst countless philosophers regarding ideas about human existence, challenging our understanding of self-continuity and selfhood. This essay explores this philosophical problem to better understand ourselves and our interpretations. To build on the (...) foundation of the contrasting insights of philosophers John Locke and David Hume, whose perspectives are examined through concepts of psychological continuity theory, bodily continuity theory, and narrative theory. By shifting the focus on the roots of identity, I reason that the root of a person's identity is their rational nature, defined as the capacity for reason, abstract thought, and self-reflection that mark human beings as persons. If rational nature has been lost, it is only until his social/narrative identity is lost that the person has completely lost their identity. (shrink)

Olson (1997a) tries to refute the Psychological Approach to personal identity with his Fetus Argument, and Mackie (1999) aims to do the same with the Death Argument. With the help of a suggestion made by Baker (1999), the following discussion shows that these arguments fail. In the process of defending the Psychological Approach, it is made clear exactly what one is and is not committed to as a proponent of the theory.

It is commonly argued that a serious right to life is grounded only in actual, relatively advanced psychological capacities a being has acquired. The moral permissibility of abortion is frequently argued for on these grounds. Increasingly it is being argued that such accounts also entail the permissibility of infanticide, with several proponents of these theories accepting this consequence. We show, however, that these accounts imply the permissibility of even more unpalatable acts than infanticide performed on infants: organ harvesting, live (...) experimentation, sexual interference, and discriminatory killing. The stronger intuitions against the permissibility of these ‘pre-personal acts’ allow us to re-establish a comprehensive and persuasive reductio against psychological accounts of persons. (shrink)

The vast advances in biometrics over the past several decades have brought with them a host of pressing concerns. Philosophical scrutiny has already been devoted to many of the relevant ethical and political issues, especially ones arising from matters of privacy, bias, and security in data collection. But philosophers have devoted surprisingly little attention to the relevant metaphysical issues, in particular, ones concerning matters of personal identity. This paper aims to take some initial steps to correct this oversight. (...) After discussing the philosophical problem of personal identity, the ways in which the notion of biometric identity connects with, or fails to connect with, the philosophical notion of personal identity is explored. Though there may be some good reasons to use biometric identity to track personal identity, it is contended that biometric identity is not the same thing as personal identity and thus that biometrics researchers should stop talking as if it were. (shrink)

Our aim in this entry is to articulate the state of the art in the moral psychology of personal identity. We begin by discussing the major philosophical theories of personal identity, including their shortcomings. We then turn to recent psychological work on personal identity and the self, investigations that often illuminate our person-related normative concerns. We conclude by discussing the implications of this psychological work for some contemporary philosophical theories and suggesting fruitful (...) areas for future work on personal identity. (shrink)

This paper discusses Shoemaker's (1984) account of personal identity over time and the problems person essentialism raises for psychological continuity theories of personal identity at large, as detailed by Olson and Witt (2020).

In his early works, Derek Parfit famously defended revisionary reductionism about personhood. According to this view, facts about personal identity consist in the holding of more particular psychological facts, which can be described wholly impersonally. He also argued that, in some cases, the truth of this view makes questions about diachronic personal identity empty questions to which no meaningful answers can be given. Yet, in his later works, Parfit defends several ethical theories such as contractualism (...) and rule-consequentialism, which seem to rely on exactly the kind of determinate notion of personal identity to which he objected earlier. Parfit, furthermore, never explored reductionism’s consequences for such theories in his later works. In order to solve this interpretative puzzle, this chapter tries to argue that, even if they are seemingly conflicting, Parfit’s views on personal identity and rule-consequentialism, Scanlonian contractualism, and Kantian contractualism do form a coherent and unified whole. (shrink)

In this paper, I first consider a famous objection that the standard interpretation of the Lockean account of diachronicity (i.e., one’s sense of personal identity over time) via psychological connectedness falls prey to breaks in one’s personal narrative. I argue that recent case studies show that while this critique may hold with regard to some long-term autobiographical self-knowledge (e.g., episodic memory), it carries less warrant with respect to accounts based on trait-relevant, semantic self-knowledge. The second issue (...) I address concerns the question of diachronicity from the vantage point that there are (at least) two aspects of self—the self of psychophysical instantiation (what I term the epistemological self) and the self of first person subjectivity (what I term the ontological self; for discussion, see Klein SB, The self and its brain, Social Cognition, 30, 474–518, 2012). Each is held to be a necessary component of selfhood, and, in interaction, they are appear jointly sufficient for a synchronic sense of self (Klein SB, The self and its brain, Social Cognition, 30, 474–518, 2012). As pertains to diachronicity, by contrast, I contend that while the epistemological self, by itself, is precariously situated to do the work required by a coherent theory of personal identity across time, the ontological self may be better positioned to take up the challenge. (shrink)

The problem of personal identity contains various questions and issues, but the main issue is persistence; how can one person remain the same over time? Modern philosophers have proposed various solutions to this problem; however, none are without problems. David Hume rejected the notion of personal identity as fictitious and posited a theory that personal identity is merely a bundle of perceptions which does not remain the same over time. Hume’s approach to (...) class='Hi'>personal identity is flawed, and Derek Parfit pushed back against Hume’s complete rejection of personal identity through his argument of psychological continuity; a continuous chain of overlapping cognitive connections between beliefs, preferences, memories, and other characteristics can meet the criterion of identity. However, Parfit falls short in only acknowledging mental features as the essential property of personal identity; physical features such as age, race, sex, etc. have a significant impact on one’s understanding of themselves. Through a combination of Hume’s bundle theory and Parfit’s psychological continuity, an understanding of what personal identity is and how it is able to remain constant over time can be reached. In this paper, I argue that personal identity is a bundle of mental and physical features that persists through time through psychological continuity. (shrink)

When talking about personal identity in the context of medical ethics, ethicists tend to borrow haphazardly from different philosophical notions of personal identity, or to abjure these abstract metaphysical concerns as having nothing to do with practical questions in medical ethics. In fact, however, part of the moral authority for respecting a patient’s self-regarding decisions can only be made sense of if we make certain assumptions that are central to a particular, psychological picture of (...) class='Hi'>personal identity, namely, that patients will remain psychologically connected to a certain degree with their future selves. I draw this out, show problems with approaches in medical ethics based on alternate theories of personal identity that do not recognise this, and explore some important implications. Namely, I show how this recognition can better explain the circumstances under which we should respect advance directives and why, and how it can better make sense of patient fears that they will not "survive" personality-altering deep brain stimulation procedures, and provide guidance on approaching patient decisions concerning this type of procedure in a manner that captures and addresses such concerns. (shrink)

Locke’s account of personal identity has been highly influential because of its emphasis on a psychological criterion. The same consciousness is required for being the same person. It is not so clear, however, exactly what Locke meant by ‘consciousness’ or by ‘having the same consciousness’. Interpretations vary: consciousness is seen as identical to memory, as identical to a first personal appropriation of mental states, and as identical to a first personal distinctive experience of the qualitative (...) features of one’s own thinking. There is wide agreement, however, that Locke’s theory of personal identity is meant to complement his moral and theological commitments to a system of divine punishment and reward in an afterlife. But these commitments seem to require also a metaphysical criterion, and Locke is insistent that it cannot be substance. The difficulty reconciling the psychological and metaphysical requirements of the theory has led, at worst, to charges of incoherence and, at best, to a slew of interpretations, none of which is widely accepted. (shrink)

This paper explores the implications of extended and distributed cognition theory for our notions of personal identity. On an extended and distributed approach to cognition, external information is under certain conditions constitutive of memory. On a narrative approach to personal identity, autobiographical memory is constitutive of our diachronic self. In this paper, I bring these two approaches together and argue that external information can be constitutive of one’s autobiographical memory and thus also of one’s diachronic (...) self. To develop this claim, I draw on recent empirical work in human-computer interaction, looking at lifelogging technologies in both healthcare and everyday contexts. I argue that personal identity can neither be reduced to psychological structures instantiated by the brain nor by biological structures instantiated by the organism, but should be seen as an environmentally-distributed and relational construct. In other words, the complex web of cognitive relations we develop and maintain with other people and technological artifacts partly determines our self. This view has conceptual, methodological, and normative implications: we should broaden our concepts of the self as to include social and artifactual structures, focus on external memory systems in the (empirical) study of personal identity, and not interfere with people’s distributed minds and selves. (shrink)

The project takes as its starting point our conflicting intuitions about personal identity exposed by Bernard Williams' thought experiment involving the switching of bodies in "The Self and the Future." The conflicted intuitions are identified as animalist and psychologist and correspond roughly with the two major approaches to personal identity. The traditional strategy to resolve the conflict---thought experiments---is critically examined and the project concludes that proper thought experiments will reveal the conflict but are unlikely to resolve (...) it. A new reading of the conflict is proposed. The concept of the person is a cluster concept with distinct components: biological human beings, rational agency and psychological continuity, where the latter is construed as the temporal analog of phenomenological unity at a time. The project then suggests that moral theory is best pursued not by a naturalist conception of persons that unites the components of the cluster, but by a novel conception that separates them. This can be accomplished best by eliminating the concept of the person altogether. Objections that the concept of the person is ineliminable are considered and rejected, as are objections that the nature of conflict is not reason enough to abandon the concept. Personhood's centrality for value theory is questioned and the eliminativist strategy is defended on the grounds that responsibility, self-concern and moral rights are best analyzed with the component concepts instead of the cluster concept. Eliminativism is therefore preferable to competing accounts of personal identity because the former is better suited for moral theory. Among the advantages are the ability to: attribute responsibility to group agents without calling them persons, make sense of our conflicting demonstrations of self-concern without taking them as evidence for conflicting theories of personal identity, and attribute moral rights to entities who fail to meet traditional criteria for personhood but who are nonetheless entitled to moral respect. (shrink)

The special and unique attitudes that we take towards events in our futures/pasts—e.g., attitudes like the dread of an impeding pain—create a challenge for “Reductionist” accounts that reduce persons to aggregates of interconnected person stages: if the person stage currently dreading tomorrow’s pain is numerically distinct from the person stage that will actually suffer the pain, what reason could the current person stage have for thinking of that future pain as being his? One reason everyday subjects believe they have a (...) substantially extended temporal existence stems from introspection—they introspectively experience their selves as being temporally extended. In this paper, I examine whether a Reductionist about personal identity can co-opt this explanation. Using Galen Strawson’s recent work on self-experience as a resource, I reach both a negative and a positive conclusion about the prospects of such a position. First, the relevant kind of self-experience—i.e., the introspective experience of one’s self as being a substantially temporally extended entity—will not automatically arise within a person stage simply in virtue of that stage being psychologically connected to/continuous with other person stages. Second, the relevant kind of self-experience will arise, however, in virtue of person stages weaving together their respective experiences, actions, etc. via a narrative. This positive conclusion points towards a new Reductionist position that focuses upon a narrative, and not mere psychological continuity, in attempting to justify the special attitudes we take towards events in our futures/pasts. (shrink)

Legal theorists have proposed several theories to justify statutes of limitations in the criminal law, but none of these normative theories is generally accepted. This chapter investigates the related descriptive question as to whether ordinary people have the intuition that legal punishment becomes less appropriate as time passes from the date of the offense and, if they do, what factors play a role in these intuitions. Five studies demonstrate that there is an intuitive statute of limitations on both legal punishment (...) and moral criticism, and that these intuitions arise, in part, from judgments about changes in psychological connectedness over time. (shrink)

Michel Gondry and Charlie Kaufman’s 2004 Eternal Sunshine of the Spotless Mind, which celebrated its fifteenth anniversary in 2019, is an extended thought experiment on the nature of memory, minds, and persons. The memory erasure thought experiment presented in the film—and its implications for personal identity—raises poignant questions for the ethicist, epistemologist, neuroscientist, metaphysician, and cognitive scientist. In this paper, I explore the rich insights the film has to offer interdisciplinary studies of memory, providing a case study in (...) how narrative can uniquely contribute to memory research, while also maintaining philosophical rigor and fidelity to scientific discoveries about memory. Turning to the philosophical implications of memory erasure, I consider memory erasure in the context of several leading views of personal identity and proposed answers to the persistence question of personal identity, assessing the challenges and complications that the memory erasure thought experiment brought to life by Eternal Sunshine poses to these theories. I argue that the psychological continuity view of personal identity—in its various iterations—does not allow an individual to truly survive the memory erasure procedure. The memory erasure thought experiment presented in Eternal Sunshine—and its metaphysical and epistemological consequences—reveal how we establish the relationship between memories and selfhood, how to define personhood in the presence of both hypothetical and real-world memory loss, and what experiences we value in human life. (shrink)

Derek Parfit famously argued that personal identity is not what matters for prudential concern about the future. Instead, he argues what matters is Relation R, a combination of psychological connectedness and continuity with any cause. This revisionary conclusion, Parfit argued, has profound implications for moral theory. It should lead us, among other things, to deny the importance of the separateness of persons as an important fact of morality. Instead, we should adopt impersonal consequentialism. In this paper, (...) I argue that Parfit is mistaken about this last step. His revisionary arguments about personal identity and rationality have no implications for moral theory. We need not decide whether Relation R or personal identity contain what matters if we want to retain the importance of the separateness of persons. (shrink)

A main element in Richard Swinburne’s (2019) argument for substance dualism concerns the conditions of a person’s continued existence over time. In this commentary I aim to question two things: first, whether the kind of imaginary cases that Swinburne relies on to make his case should be accorded the kind of weight he supposes; and second, whether philosophers should be concerned to give any substantial theory, of the sort that dualism and its competitors are apparently meant to provide, to (...) explain the conditions of personal identity after all. My suggestion, instead, will be that the concept of a person’s continued existence is better taken as philosophically unanalyzable. (shrink)

The paper discusses Thomas Reid's objection to David Hume's theory of personal identity. The hypothesis states that this criticism is not effective because it is based on a misunderstanding of Hume’s theory, namely, that Hume would have admitted a negative ontological thesis - the inexistence of a mind beyond perceptions - and a positive ontological thesis - a mind reduced to a bundle of perceptions. After explaining in what measures Reid’s objection is based upon this misunderstanding, (...) the paper shows why Hume does not accept those theses,. (shrink)

The purpose of this article is to introduce, interpret, and develop two incompatible process -ontological theories of personal identity that have received little attention in analytic metaphysics. The first theory derives from the notion of personal identity proposed in Alfred North Whitehead’s philosophy, but I interpret this notion differently from previous commentators. The Whiteheadian theory may appeal to those who believe that personal identity involves an entity or entities that are essentially dynamic, (...) but has nothing to do with diachronic objectual identity : the binary equivalence relation that every entity bears to itself, and only to itself, even after undergoing intrinsic change. The Whiteheadian theory may also find favor with those who, like Whitehead, reject the possibility of pure processes and hold that in every becoming, something—which need not be an object, thing, or individual substance—becomes. The second theory derives from the notion of recurrent dynamics presented in Johanna Seibt’s General Process Theory. The Seibtian theory may appeal to those who believe that personal identity involves not only an entity or entities that are essentially dynamic, but also the relation of diachronic objectual identity. The Seibtian theory may also find favor with those who, like Broad and Sellars, find reason to postulate pure processes. (shrink)

The view that an account of personal identity can be provided in terms of psychological continuity has come under fire from an interesting new angle in recent years. Critics from a variety of rival positions have argued that it cannot adequately explain what makes psychological states co-personal (i.e. the states of a single person). The suggestion is that there will inevitably be examples of states that it wrongly ascribes using only the causal connections available to (...) it. In this paper, I describe three distinct attacks on the psychological continuity theory along these lines. While I acknowledge that a number of interesting issues arise, I argue that the theory can withstand all three attacks. (shrink)

I want to examine the implications of a metaphysical thesis which is presupposed in various objections to Rawls' theory of justice.Although their criticisms differ in many respects, they concur in employing what I shall refer to as the continuity thesis. This consists of the following claims conjointly: (1) The parties in the original position (henceforth the OP) are, and know themselves to be, fully mature persons who will be among the members of the well-ordered society (henceforth the WOS) which (...) is generated by their choice of principles of justice. (2) The OP is a conscious event among others, integrated (compatibly with the constraints on knowledge and motivation imposed on the parties) into the regular continuity of experience that comprises each of their ongoing constitutes lives. (3) The parties in the OP thus are, and regard themselves as, psychologically continuing persons, partially determined in personality and interests by prior experiences, capable of recollection and regret concerning the past, anticipation and apprehensiveness regarding the future, and so on. Although the continuity thesis as stated above is not at odds with any of the conditions that define the OP, its exegetical validity is a matter for discussion. I shall be concerned to argue that if it is indeed contained in or a consequence of Rawls' theory, then it casts into doubt the capacity of the OP to generate or justify any principles of justice at all. On the other hand, if the continuity thesis is viewed as dispensable and unnecessary to the Rawlsian enterprise, then Rawls is correct in maintaining the irrelevance of the question of personal identity to the construction of his moral theory. In this case, the contract-theoretic, instrumentalist justification for the two principles of justice (henceforth the 2PJ) needs to be supplanted by a modified conception of wide reflective equilibrium. The considerations that form the bulk of this discussion then may be understood as providing a rationale for Rawls' recent revisions in the model of justification on which his theory of justice rests, and for his increasing emphasis on us as moral mediators between the OP and the WOS. Now I want to consider the question of whether or not, given the textual evidence, anything like the continuity thesis is stated or implied by Rawls, and what problems for his theory, if any, turn on a positive or negative answer to this question. -/- . (shrink)

According to the psychological account of personal identity, our identity is based on the continuity of psychological connections, and so we do not begin to exist until these are possible, some months after conception. This entails the psychological account faces a challenge from the non-identity problem—our intuition that someone cannot be harmed by actions that are responsible for their existence, even if these actions seem clearly to cause them harm. It is usually discussed (...) with regard to preconception harms, but in the context of the psychological account, it is also applicable to prenatal harms. Inflicting prenatal injury is widely thought to be morally impermissible, but if the injury is identity-determining on the psychological account, then no-one seems to be harmed—rather, the injury is responsible for bringing them into existence. Here, I argue that identity-determining injuries can routinely occur on the psychological account, and that this undermines the account. I assess Nicola Williams’ proposal to salvage the account based on a trans-world account of personal identity, and show that it is unsuccessful. I then show that Jeff McMahan’s embodied mind account of personal identity is also susceptible. I conclude that identity-determining prenatal injuries pose a significant challenge for the psychological account and its variants, and provide a reason for supporting alternative accounts that fix personal identity at conception. (shrink)

Consider a specific type of fission where psychological continuity takes a branching form, and one of the offshoots comes into being later than the other offshoot. Let us say that the earlier offshoot comes into being in the left branch at t, and the later offshoot comes into being in the right branch at t+1. With regard to the question how many persons are involved in this case, three answers are worth considering: (i) The original subject persists up to (...) t; a distinct person comes into being immediately after t and continues to exist in the left branch; and the third person comes into being in the right branch at t+1. (ii) The original subject persists up to the moment immediately before t+1; a distinct person comes into being at t+1 and continues to exist in the left branch; and the third person comes into being in the right branch at t+1. (iii) The original subject continues to exist in the left branch; a distinct person comes into being in the right branch at t+1. For those who hold that personal identity consists in psychological continuity of some sort, the aforementioned three options exhaust the sensible ways of understanding how one persists in delayed fission. However, I argue that complications arise for each answer. Hence, delayed fission poses a challenge for the psychological approach to personal identity. (shrink)

Locke’s theory of personal identity was philosophically groundbreaking for its attempt to establish a non-substantial identity condition. Locke states, “For the same consciousness being preserv’d, whether in the same or different Substances, the personal Identity is preserv’d” (II.xxvii.13). Many have interpreted Locke to think that consciousness identifies a self both synchronically and diachronically by attributing thoughts and actions to a self. Thus, many have attributed to Locke either a memory theory or an appropriation (...) theory of personal identity. But the former stumble on circularity and the latter is insufficient for Locke’s moral theory insofar as he is committed to a theory of divine rectification. The common problem is that Locke’s theory seems to demand an objective, or metaphysical, fact of a continuing consciousness that does not appeal to a traditional notion of substance for the continuity. I’m suggesting something new. In II.xxvii of the Essay, we see an ambiguity in Locke’s use of the term ‘consciousness’. Locke seems to see consciousness as both a mental state by means of which we are aware of ourselves as perceiving and as the ongoing self we are aware of in these conscious states. First, I make the textual argument why we should read Locke as having a conception of a metaphysical fact of a continuing consciousness that does not appeal to thinking or bodily substance to establish its continuity. I then argue that the metaphysical fact of an enduring consciousness is revealed to us as a phenomenological fact of experience. Due to the nature of certain kinds of perceptual situations we have an experience of ourselves as temporally extended. Although the text bears out that Locke seemed to think there is a fact of an ongoing consciousness, I argue that it is consistent with his reluctance elsewhere that he makes no further epistemological or ontological claims about it. Finally, I provide an account of Locke’s understanding of memory and its relation to consciousness that supports the claim that consciousness is something ontologically distinct from either thinking or bodily substance. (shrink)

Personal indexicals are often taken to refer to the agent of an expression’s context, but deviant uses (e.g. ‘I’m parked out back’) complicate matters. I argue that personal indexicals refer to the extended self of the agent, where the extended self is a mereological chimera incorporating whatever determines our behavioral capacities. To ascertain the persistence conditions of personal identity, I propose a method for selecting a level of description and a set of functional properties at that (...) level that remain constant over a lifetime. I argue for functional constancy, and against continuity, as the central determinant of diachronic identity. (shrink)

Lockean theories of personal identity maintain that we persist by virtue of psychological continuity, and most Lockeans say that we are material things coinciding with animals. Some animalists argue that if persons and animals coincide, they must have the same intrinsic properties, including thinking, and, as a result, there are ‘too many thinkers’ associated with each human being. Further, Lockeans have trouble explaining how animals and persons can be numerically different and have different persistence conditions. For these (...) reasons, the idea of a person being numerically distinct but coincident with an animal is rejected and animalists conclude that we simply are animals. However, animalists face a similar problem when confronted with the vagueness of composition. Animals are entities with vague boundaries. According to the linguistic account of vagueness, the vagueness of a term consists in there being a number of candidates for the denotatum of the vague term. It seems to imply that where we see an animal, there are, in fact, a lot of distinct but overlapping entities with basically the same intrinsic properties, including thinking. As a result, the animalist must also posit ‘too many thinkers’ where we thought there was only one. This seems to imply that the animalist cannot accept the linguistic account of vagueness. In this paper the author argues that the animalist can accept the linguistic account of vagueness and retain her argument against Lockeanism. (shrink)

This paper addresses a question concerning psycho­logical continuity, i.e., which features preserve the same psychological subject over time; this is not the same question as the one concerning the necessary and sufficient conditions for personal identity. Marc Slors defends an account of psychological continuity that adds two features to Derek Parfit’s Relation R, namely narrativity and embodiment. Slors’s account is a significant improvement on Parfit’s, but still lacks an explicit acknowledgment of a third feature that I (...) call relationality. Because they are usually regarded as cases of radical discontinuity, I start my discussion from the experiences of psychological disruption undergone by victims of severe violence and trauma. As it turns out, the challenges we encounter in granting continuity to the experiences of violence and trauma victims are germane to those we encounter in granting continuity to the experiences of subjects in non-traumatic contexts. What is missing in the most popular accounts of psychological continuity is an explicit acknowledgment of the links that tie our psychological lives to other subjects. A more persuasive notion of psychological continuity is not only embodied and narrative, as is Slors’s notion, but also explicitly relational. (shrink)

Marya Schechtman has raised a series of worries for the Psychological Continuity Theory of personal identity (PCT) stemming out of what Derek Parfit called the ‘Extreme Claim’. This is roughly the claim that theories like it are unable to explain the importance we attach to personal identity. In her recent Staying Alive (2014), she presents further arguments related to this and sets out a new narrative theory, the Person Life View (PLV), which she (...) sees as solving the problems as well as bringing other advantages over the PCT. I look over some of her earlier arguments and responses to them as a way in to the new issues and theory. I argue that the problems for the PCT and advantages that the PLV brings are all merely apparent, and present no reason for giving up the former for the latter. (shrink)

Physicalistic theories of psychology are a classic case of scientific imperialism: the explanatory capacity of physics, both with respect to its methods and to its domain, is taken to extend beyond the traditional realm of physics, and into that of psychology. I argue in this paper that this particular imperialistic venture has failed. Contemporary psychology uses methods not modelled on those of physics, embracing first-personal methodology where physics is strictly impersonal. I make the case that whether or not scientific (...) imperialism is in general harmful, in this instance naturalists who reject first philosophy should give up physicalist imperialism. Using only general principles from the philosophy of logic plus accepted physicalist criteria of identity, I show that first-personal psychology embodies a minor but fruitful increase in expressive strength compared to impersonal psychology: the ability to distinguish descriptively indiscriminable posits. (shrink)

John Locke is often understood as the inaugurator of the modern discussion of personal human identity—a discussion that inevitably falls back on his own theory with its critical reliance on memory. David Hume and Sigmund Freud would later make arguments for what constituted personal identity, both relying, like Locke, on memory, but parting from Locke's company in respect the role that memory played. The purpose of this paper will be to sketch the groundwork for Locke's (...) own theory of personal identity and consider some common objections tied to his special reliance on memory. Then, we will investigate the extent to which Hume and Freud refined their respective concepts of self-identity in ways that escape some of the most intractable objections to Locke's theory in its dependence on memory. Finally, we will consider which theorist's conception of self-identity best accords with our notion of the cyber-self, or psychological subjectivity in the context of cyberspace. For Locke, the nature of self-identity is that it is continuous across time, and to remain uninterrupted it must be beholden to a psychological process, rather than a material or immaterial substance. (shrink)

In this paper, I defend the idea that we need a metaphysical theory to justify identity-related practical concerns, such as self-concern. I outline D. Parfit’s theory, in which the concerns receive a metaphysical justification. Then, I focus on two objections: C. Korsgaard’s claim that the concerns are justified by the unity of agency, and M. Johnston’s contention that the concerns are prima facie justified independently of a metaphysical theory. I argue that even if these theories have (...) a point, they do not cover a range of situations in which justification may be sought. It is in these situations that a metaphysical theory may find its place. (shrink)

In this paper, I argue that virtual manifestations of selfhood in VR environments have a transformative effect on the users, which in turn has spillover effects in the physical world. I will argue in favor of extending our notion of personal identity as to include VR avatars as negotiable bodies that constitute a genuine part of who we are. Recent research in VR shows that users can experience the Proteus Effect and other lasting psychological changes after being (...) immersed in VR. An extended theory of the self, modeled after the extended mind thesis advanced by Clark and Chalmers (1998), can offer a deeper understanding of how and why immersive virtual experiences have such a transformative effect on users. The early VR scholars had a similar intuition- that “VR is a medium for the extension of body and mind” (Biocca and Delaney 1995), acting like a genuine “reality engine” (Biocca and Levy 1995). (shrink)

The article regards the age peculiarities of the development of personality’s self-consciousness in youth. -/- The conducted theoretical analysis and empirical research contribute to the definition of the following features of the formation of personality self-consciousness in youth: -/- – strengthening the integrative tendency in this process, which leads to an increase in the level of cognitive complexity, differentiation, integrity, and hierarchy of the “Self-image”, as well as the emergence of a holistic, integrated “I”; -/- – the ability of self-awareness (...) as the highest form of self-knowledge, due to the higher level of development of intelligence and the individuals thinking; -/- – increase of the level of awareness of the personality of their own experiences, self-attitude, and selfesteem, which contributes to the growth of interest in his/her “I”; -/- – actualization of the process of development of personal and social self-identity (self-determination) of youth; -/- – intensification of formation of the system of value orientations as a psychological basis for the development of personality’s self-consciousness; -/- – an ability to make informed decisions in various spheres of life (social, professional, personal, etc.), which is the evidence of becoming a socially mature person; -/- – psychological mechanisms for the development of the youth’s self-consciousness is self-reflection, identification, and separation; -/- – a pivotal object of self-reflection is the relationship with significant others and their own life position; the object of identification presents socially valuable qualities of others, which promotes the assimilation of social norms; due to separation of the acquired norms of behavior, value orientations and motives become individualized. -/- The identified features are important for the psychological and pedagogical theory and practice. (shrink)

In this paper, I present an informational approach to the nature of personal identity. In “Plato and the problem of the chariot”, I use Plato’s famous metaphor of the chariot to introduce a specific problem regarding the nature of the self as an informational multiagent system: what keeps the self together as a whole and coherent unity? In “Egology and its two branches” and “Egology as synchronic individualisation”, I outline two branches of the theory of the self: (...) one concerning the individualisation of the self as an entity, the other concerning the identification of such entity. I argue that both presuppose an informational approach, defend the view that the individualisation of the self is logically prior to its identification , and suggest that such individualisation can be provided in informational terms. Hence, in “A reconciling hypothesis: the three membranes model”, I offer an informational individualisation of the self, based on a tripartite model, which can help to solve the problem of the chariot. Once this model of the self is outlined, in “ICTs as technologies of the self” I use it to show how ICTs may be interpreted as technologies of the self. In “The logic of realisation”, I introduce the concept of “realization” (Aristotle’s anagnorisis ) and support the rather Spinozian view according to which, from the perspective of informational structural realism, selves are the final stage in the development of informational structures. The final “Conclusion: from the egology to the ecology of the self” briefly concludes the article with a reference to the purposeful shaping of the self, in a shift from egology to ecology. (shrink)

Marya Schechtman's The Constitution of Selves presented an impressive attempt to persuade those working on personal identity to give up mainstream positions and take on a narrative view instead. More recently, she has presented new arguments with a closely related aim. She attempts to convince us to give up the view of identity as a matter of psychological continuity, using Derek Parfit's story of the “Nineteenth Century Russian” as a central example in making the case against (...) Parfit's own view, and offers a form of narrative theory as a way out of the problem. In this paper I consider this new case, and argue that we should not be persuaded towards the narrative. (shrink)

I am going to defend a diagnosis of Hume’s recantation that I have already defended—rather unsuccessfully—in more than one publication. My excuse for trying again is that I shall now offer a more carefully qualified defense. My diagnosis was, and still is, that in the Appendix to the Treatise Hume came to see that he could not account for the necessary ownership of perceptions —i.e., for the fact that this very perception could not have occurred in a different set.

A popular “Reductionist” account of personal identity unifies person stages into persons in virtue of their psychological continuity with one another. One objection to psychological continuity accounts is that there is more to our personal identity than just mere psychological continuity: there is also an active process of self-interpretation and self-creation. This criticism can be used to motivate a rival account of personal identity that appeals to the notion of a narrative. (...) To the extent that they comment upon the issue, proponents of narrative accounts typically reject Reductionist metaphysics that (ontologically) reduce persons to aggregates of person stages. In contrast to this trend, we seek to develop a narrative account of personal identity from within Reductionist metaphysics: we think person stages are unified into persons in virtue of their narrative continuity with one another. We argue that this Reductionist version of the narrative account avoids some serious problems facing non-Reductionist versions of the narrative account. (shrink)

Nils-Frederic Wagner takes issue with my argument that influential critics of “transplant” thought experiments make two cardinal mistakes. He responds that the mistakes I identify are not mistakes at all. The mistakes are rather on my part, in that I have not taken into account the conceptual genesis of personhood, that my view of thought experiments is idiosyncratic and possibly self-defeating, and in that I have ignored important empirical evidence about the relationship between brains and minds. I argue that my (...) case still stands and that transplant thought experiments can do damage to rivals of a psychological continuity theory of personal identity like Marya Schechtman’s Person Life View. (shrink)

This chapter focuses on AI-based cognitive and perceptual enhancements. AI-based brain enhancements are already under development, and they may become commonplace over the next 30–50 years. We raise doubts concerning whether radical AI-based enhancements transhumanists advocate will accomplish the transhumanists goals of longevity, human flourishing, and intelligence enhancement. We urge that even if the technologies are medically safe and are not used as tools by surveillance capitalism or an authoritarian dictatorship, these enhancements may still fail to do their job for (...) philosophical reasons. In what follows, we explore one such concern, a problem that involves the nature of the self. We illustrate that the so called transhumanist efforts to “merge oneself with AI” could lead to perverse realizations of AI technology, such as the demise of the person who sought enhancement. And, in a positive vein, we offer ways to avoid this, at least within the context of one theory of the nature of personhood. (shrink)

Abstract: Those who endorse the Psychological Continuity Approach (PCA) to analyzing personal identity need to impose a non-branching constraint to get the intuitively correct result that in the case of fission, one person becomes two. With the help of Brueckner's (2005) discussion, it is shown here that the sort of non-branching clause that allows proponents of PCA to provide sufficient conditions for being the same person actually runs contrary to the very spirit of their theory. The (...) problem is first presented in connection with perdurantist versions of PCA. The difficulty is then shown to apply to endurantist versions as well. -/- . (shrink)

This article provides a critical analysis of Mark Walker’s type-token theory. This theory purports to describe, explain, and justify the mechanism by which moral and legal responsibility can be attributed to exact and complete duplicates of persons. However, Walker’s defence of the view of persons as abstract entities is met with several metaphysical objections. Alternatively, a new approach to moral and legal responsibility is developed based on principles of agency law, in which the conception of a guilty person (...) does not require identity with the person who committed the culpable act. (shrink)

The article focuses on one of the identity-related practical concerns discussed in contemporary debate on personal identity, namely self-concern. The dominant view seems to be that people’s concern for their future selves is preconditioned by their ability to anticipate the experiences of their future selves and that, as a result, a psychological theory of personal identity is required to justify self-concern. I argue that self-concern in its most general form is not preconditioned by (...) the possibility of anticipation. I provide examples showing that people may legitimately be concerned for their future selves even if those selves are unconscious or dead, that is, in states that the people cannot anticipate. I contend that self-concern is not rooted in our desire to have positive experiences, but in our desire to live meaningful lives. Since the value of our lives can be influenced by events that only take place after we cease to exist, I further argue that certain posthumous states of affairs relevant to our lives can also be the legitimate target of an indirect sort of self-concern. Inspired by Marya Schechtman’s theories, I develop a form of the narrative theory of personal identity in the sense of characterization and show that narrative continuity can be both a source of meaning in a person’s life and a ground for the person’s self-concern. It turns out that the sort of identity that justifies non-anticipatory self-concern cannot be numerical identity, because it does not provide the persistence conditions of people. (shrink)

I intend to discuss Hume’s theory of personal identity in Books I and II of the Treatise of Human Nature. First, I intend to argue that Hume’s distinction between a ‘personal identity with regard to thought and imagination’ and a ‘personal identity with regard to passions and self-interest’ is only methodological, not radical. That is, the philosopher does not sug-gest the existence of two distinct ideas of personal identity in mind. Secondly, (...) I try to show the contribution of the passions of pride and humility to the production of a belief in personal identity. Pride and humility contribute to the liveliness of this belief by producing the person’s interest in his sensations and actions of the past and the future. Thirdly, I want to show how passions and self-interest make it possible to explain the corporeal aspect of the belief in personal identity. I propose to discuss how the body and its qualities can be understood as constituent elements of the notion of personal identity. (shrink)

One of the most prominent ethical concerns regarding emerging neurotechnologies is mental privacy. This is the idea that we should have control over access to our neural data and to the information about our mental processes and states that can be obtained by analyzing it. A key issue is whether this information needs more stringent protection than other kinds of personal information. I will articulate and support the view, underlying recent regulatory frameworks, that mental privacy requires a special treatment (...) because of its relation to relevant aspects of personal identity. It has been suggested that this approach could be supported by the idea that mental privacy constitutes a fundamental psychological dimension of privacy. The connection between this psychological view of privacy and identity can be traced back to Irwin Altman’s idea that privacy is an interpersonal boundary regulation process. However, it is not clear whether this notion of privacy can be associated with a conception of identity that is relevant in contemporary neuroethics. I will suggest that the narrative and relational approach to identity, a prominent view in recent ethical discussions of neurotechnology, lines up with key aspects of Altman’s proposal. I suggest that if mental privacy is an essential component of identity, the latter could be affected by technological mind-reading. (shrink)

The acquisition of virtue can be conceptualized as a self-regulatory process in which deliberate practice results in increasingly higher levels of skillfulness in leading a virtuous life. This conceptualization resonates with philosophical virtue theories as much as it converges with psychological models about skill development, expertise, goal motivation, and self-regulation. Yet, the conceptualization of virtue as skill acquisition poses the crucial question of motivation: What motivates individuals to self-improvement over time so that they can learn from past experience, correct (...) mistakes, and expand their ethical knowledge to new and unfamiliar circumstances? In this paper, it is argued that the motivation to increase one’s level of skillfulness in leading a virtuous life is supported by a specific identity goal, namely the goal to be a moral person. However, this moral identity goal needs to carry specific goal characteristics in order to effectively provide this motivation. It needs to be sufficiently abstract, internally motivated and promotion- rather than prevention-oriented. Research in developmental psychology suggests that the moral identity of children is rather concrete, externally motivated, and prevention-oriented. With development, higher levels of abstraction, internal motivation, and promotion-orientation gain importance providing an important motivational basis for a self-regulated process of virtue acquisition. (shrink)

Personal identity is one of the important and complex issues in the field of the philosophy of the soul. It is also related to the philosophy of ethics and metaphysics in different respects and has given rise to some problems in these two areas. The justification of ethical responsibility and man's eternity in the posthumous state have attracted psychologist-philosophers' attention to the significance and necessity of explaining personal identity. This paper examines the issue from the view (...) point of Mulla Sadra. Here, the writer initially refers to some of the most important contemporary theories about personal identity which can generally be divided into two reductionist and non-reductionist branches. Reductionists intend to reduce the human identity to elements such as memory, biological specifications, or continuous psychological states, while non-reductionists are against this. Mulla Sadra's theory in this regard is not in conformity with any of the above theories; however, it is more consistent with the non-reductionist approach from certain aspects. Though relying on the fundamental ontological and psychological principles of his own philosophy, Mulla Sadra tries to present a picture of human identity that, while depending on human nature, reveals personal identity, too. This is an identity in whose process of formation the three elements of habits, intentions, and acts play major roles. The extent of the consistency of these three elements with rationality is the reason behind having people with different identities. It should also be added that no human being enjoys a single and fixed identity; rather, identity is a continuous reality that, while being one, is a plural truth. (shrink)