The received view of multiple personality disorder (MPD) presupposes a form of realism, according to which the 'secondary personality' is an independent conscious entity joined to the psyche of the host. The received view of MPD is endorsed by the majority of psychologists, as are the major diagnostic criteria for MPD. Realism of this type, gives rise to a certain problem concerning the personal identity of the secondary personality, namely, who this individual is. It is argued that three broad answers (...) to the Question of Who in the context of MPD have been proposed in the history of psychology and psychiatry: psychological realism (Janet and the Dissociationist School); psychological anti-realism (Freud and the Psychoanalytic School), and neural realism (Wigan, Sperry and Gazzaniga). These views are examined. In addition, the relationship of the Question of Who to the traditional problem of personal identity is examined. It is argued that philosophers such as Locke, Reid and Parfit have either overlooked or presupposed the Question of Who. (shrink)

The article questions the assumption that conjoined twins are necessarily two people or persons by employing arguments based on different points of view: non-personal vitalism, the person as a sentient being, the person as an agent, the person as a locus of narrative and valuation, and the person as an embodied mind. Analogies employed from the cases of amputation, multiple personality disorder, abortion, split-brain patients and cloning. The article further questions the assumption that a conjoined twin's natural interest and wish (...) is separation. I first contend that separation is such a radical procedure as to render the post-separation person different from the pre-separation one. Therefore, it is not possible to benefit the pre-separation twin by the act of separation. The article concludes with a critical evaluation of the tendency in bioethics to regard ethical challenges as rivalry between individuals competing for scarce resources. (shrink)

Many contemporary bioethicists claim that the possession of certain psychological properties is sufficient for having full moral status. I will call this thepsychological approach to full moral status. In this paper, I argue that there is a significant tension between the psychological approach and a widely held model of Dissociative Identity Disorder (DID, formerly Multiple Personality Disorder). According to this model, the individual personalities or alters that belong to someone with DID possess those properties that proponents of the psychological approach (...) claim suffice for full moral status. If this account of DID is true, then the psychological approach to full moral status seems to entail that the two standard therapies for treating DID might, on occasion, be seriously immoral, for they may well involve the (involuntary) elimination of an entity with full moral status. This result should give proponents of the psychological approach pause, for most people find the claim that current treatments of DID are ethically suspect highly counter-intuitive. (shrink)

mainstream academicians. Perhaps the major common area of interest was that of dissociation — in particular, the study of hypnosis and multiple personality, The founders of the S.P.R. believed, along with many others, that dissociative phenomena promised insights into the nature of the mind generally, including..

KEYWORDS: dissociation; multiple personality, person, responsibility.

INTRODUCTION Back in the good old days of philosophy — say, around 400 BC, philosophers played a rather prominent role in the community at large. ...

If personal identity consists in non-branching psychological continuity, then the sharp breaks in psychological connectedness characteristic of Multiple Personality Disorder implicitly commit psychological continuity theories to a metaphysically extravagant reification of alters. Animalist theories of personal identity avoid the reification of alternate personalities by interpreting multiple personality as a failure to integrate alternative autobiographical memory schemata. In the normal case, autobiographical memory cross-classifies a human life, and in so doing provides access to a variety of interpretative frameworks with their associated (...) clusters of general event memory and episodic memory. Multiples exhibit erratic behavior because they cannot access reliably the intersecting autobiographical memory schemata that permit graceful transitions between social roles, behavioral repertoire and emotional dispositions. Selves, in both normal and certain pathological cases, are best understood as semi-fictional narratives created by human animals to serve their social, emotional and physical needs. (shrink)

Abstract The phenomenology of Multiple Personality (MP) syndrome is used to derive an Aristotelian explanation of the failure to achieve rational integration of mental content. An MP subject is best understood as having failed to master the techniques of integrating conative and cognitive aspects of her mental life. This suggests that in irrationality the subject may lack similar skills basic to the proper articulation and use of mental content in belief formation and control of action. The view that emerges centres (...) mind on the activity of a subject rather than a structured causal nexus. (shrink)

This paper outlines a multidimensional conception of Multiple Personality Disorder (MPD) that differs from the 'orthodox' conception in terms of the content of its commitment to the reality of the self. Unlike the orthodox conception it recognizes that selves are fuzzy entities. By appreciating the possibility that selves are fuzzy entities, it is possible to rebut a form of fictionalism about the self which appeals to clinical data from MPD. Realism about self can be preserved in the face of multiple (...) personalities. (shrink)

One of the central problems of personal identity is to determine what we are essentially . In response to this problem, Lynne Rudder Baker espouses a psychological criterion, that is, she claims that persons are essentially psychological. Baker’s theory purports to bypass the problems of other psychological theories such as Dissociative Identity Disorder and the problem of individuating persons synchronically. I argue that the theory’s treatment of Dissociative Identity Disorder leads to untenable results, is invalid, and consequently fails to individuate (...) persons. (shrink)

Introduction -- Am I alone in my body? -- Multiple personality -- Personal identity -- Diachronic identity -- What am I fundamentally? -- Empirical discernability and fission -- My body -- The various senses of personal identity -- Multiple personality and individuation -- Morton Prince's seminal case study the dissociation of a personality -- Philosophical theories of multiple personality -- The coexistence thesis -- Sharing my body -- A criterion of individuation -- Multiple personality in therapeutic and biographic discourses -- (...) Multiple personality in literary discourses. (shrink)

Here the distinguished philosopher Ian Hacking uses the MPD epidemic and its links with the contemporary concept of child abuse to scrutinize today's moral...

_Raritan: A Quarterly Review_ , IX, 68-98, Summer 1989. Reprinted (with footnotes), _Occasional Paper #8_ , Center on Violence and Human Survival, John Jay College of Criminal Justice, The City University of New York, 1991; Daniel Kolak and R. Martin, eds., _Self & Identity: Contemporary Philosophical Issues_ , Macmillan, 1991.

The condition known as Multiple Personality Disorder (MPD) or Dissociative Identity Disorder (DID) is metaphysically strange. Can there really be several distinct persons operating in a single body? Our view is that DID sufferers are single persons with a severe mental disorder. In this paper we compare the phenomenology of dissociation between personality states in DID with certain delusional disorders. We argue both that the burden of proof must lie with those who defend the metaphysically extravagant Multiple Persons view and (...) that there is little theoretical motivation to yield to that view in light of the fact that the core symptoms of DID bear remarkable similarity to the symptoms of these other disorders where no such extravagance is ever seriously entertained. (shrink)

Dissociative Identity Disorder (DID) (formerly known as Multiple Personality Disorder) is a condition in which a person appears to possess more than one personality, and sometimes very many. Some recent criminal cases involving defendants with DID have resulted in "not guilty" verdicts, though the defense is not always successful in this regard. Walter Sinnott-Armstrong and Stephen Behnke have argued that we should excuse DID sufferers from responsibility, only if at the time of the act the person was insane (typically delusional); (...) otherwise the presumption should be that persons with DID are indeed responsible for their actions. We find their interpretation of DID and of the way in which the requirements for criminal insanity relate to this condition worrying and likely to result in injustice to DID sufferers. Our thesis is that persons with DID cannot be responsible for their actions if the usual features of the condition are present. A person with DID is a single person in the grip of a very serious mental disorder. By focusing on the features of DID which have, as we argue, the effect of deluding the patient, we try to show that such a person is unable to fulfill the ordinary conditions of responsible agency (namely, autonomy and self-control). (shrink)

Many of the differences between empirical/psychological and conceptual/philosophical approaches to the mind can be resolved using a more precise language that is sensitive to both. Distinguishing identification from identity and identification as from identification with, and then defining the experiential concept of the per sonat, provides a walking bridge. Applying the new terminology to increasing degrees of dissociation, from non-pathological cases to multiple personality, shows how our psychologies can profit from philosophical analysis while our philosophies can revise themselves according to (...) empirical data. Redefining the psychological structures of persona, personality, and self in terms of an experientially more precise conceptual vocabulary, including the per sonat, avoids the pitfalls of the old approaches and provides insights into the nature of human consciousness that lead both to therapeutic results in psychotherapy and a long-overdue conceptual revision in the philosophy of personal identity. Among the practical conclusions is that for legal purposes MPD should not be considered as a multiple person phenomenon but, rather, as a phenomenon of one person who, simultaneously, is identified as many selves. Among the theoretical conclusions is that a person qua person consists not just in a biology and a psychology but also a philosophy. (shrink)

Barnhardt, in “Dissociation: An Evolutionary Interpretation,” makes a case for understanding multiple personality as a “natural”phenomenon resulting from human biological evolution. He also argues that the reason that “multiple personalities” are not encountered more frequently is a result of a social construction encouraging “single” personalities. He concludes that it is from the interaction between the two that ethics derive. In this response I offer an alternative hermeneutic, using memory as the interpretive key, and by introducing Ricoeur’s work on narrative. highlight (...) how Barnhardt’s argument limits us to a “scientific” understanding of MultiplePersonality and thus limits our ability to understand and enact a viable “ethic” of care. (shrink)

Marya Schechtman argues that psychological continuity accounts of personal identity, as represented by Derek Parfit's account, fail to escape the circularity objection. She claims that Parfit's deployment of quasi-memory (and other quasi-psychological) states to escape circularity implicitly commit us to an implausible view of human psychology. Schechtman suggests that what is lacking here is a coherence condition, and that this is something essential in any account of personal identity. In response to this I argue first that circularity may be escaped (...) using quasi-psychological states even with the addition of the coherence condition. Second, I argue that there is something right about the coherence condition, and a major task of this paper is to identify its proper theoretical role. I do so by reflection on integration therapies for people with multiple personality disorder (MPD). The familiar distinction between the moral and the metaphysical concept of the person is developed alongside such reflection. Connecting these two issues I argue that coherence acts as a normative constraint on accounts of personal identity, but that the normative dimension of personhood is not essential to our notion of a person tout court. (shrink)

A striking feature of post-modernism is its distrust of the subject. If the modern period, beginning with Descartes, sought in the subject a source of certainty, an Archimedian point from which all else could be derived, post- modernism has taken the opposite tack. Rather than taking the self as a foundation, it has seen it as founded, as dependent on the accidents which situate consciousness in the world. The same holds for the unity of the subject. Modernity, in its search (...) for a single foundation, held the subject to be an indissoluble unity. Post-modernism’s position, by contrast, is announced by Nietzsche: “The assumption of one single subject is perhaps unnecessary; perhaps it is just as permissible to assume a multiplicity of subjects, whose interaction and struggle is the basis of our thought and our consciousness in general? ...My hypotheses: The subject as multiplicity.” Given this, there is a natural correspondence between the success of post- modernism and the current interest in multiple personality disorder. In the latter, we actually have the experience of a “multiplicity of subjects” in their interaction and struggle. The subject stands there before us “as multiplicity.” It gives us a concrete case, one which raises some of the pressing questions associated with the post-modern denial of the subject. Confronting it, we ask: how real are the personalities composing the multiplicity of this disordered self? What, in fact, does this multiplicity tell us about the self? about its genesis and status? What does it reveal about “our thought and consciousness in general”? I plan, in the short compass of this paper, to sketch some answers to these questions. §1. A brief description of MPD. The American Psychiatric Association gives two criteria for (MPD) multiple personality disorder. First, and most obviously, there is “the existence within the person of two or more distinct personalities or personality states (each with its own relatively enduring pattern. (shrink)

Now that consciousness is thoroughly out of the way, we can focus more precisely on the kinds of things that can happen underneath. A contrast can be made between dissociation and repression. Dissociation is where a memory record or set of autobiographical memory records cannot be retrieved; repression is where there is retrieval of a record but, because of the current task specification, the contents of the record, though entering into current processing, are not allowed into consciousness. I look at (...) hypnotic amnesia and dissociative identity disorder in relation to this contrast. (shrink)

Perhaps we should begin with this question: What is the “problem of free will”? Like those other great “problem” phrases that philosophers bandy about, “the mind-body problem,” “the problem of universals,” and “the problem of evil,” this phrase has no clear referent. There are obviously a lot of philosophical problems about free will, but which of them, or which combination of them, is the problem of free will? I will propose an answer to this question, but this proposal can be (...) no more than just that, a proposal. I propose that we understand the problem of free will to be the following problem. (shrink)

This book addresses these and a cluster of other questions about changes in the self through time and about the moral attitudes we adopt in the face of these...

In this paper we argue that dissociative identity disorder (DID) is best interpreted as a causal model of a (possible) post-traumatic psychological process, as a mechanical model of an abnormal psychological condition. From this perspective we examine and criticize the evidential status of DID, and we demonstrate that there is really no good reason to believe that anyone has ever suffered from DID so understood. This is so because the proponents of DID violate basic methodological principles of good causal modeling. (...) When every ounce of your concentration is fixed upon blasting a winged pig out of the sky, you do not question its species' ontological status. James Morrow, City of Truth (1990). (shrink)