Multiple Personality Disorder: Arguments For and Against MPD
This paper examines the ongoing debate surrounding Multiple Personality Disorder (MPD), now classified as Dissociative Identity Disorder (DID), arguing that the condition genuinely exists despite significant controversy. The paper begins by defining MPD, describing its symptoms — including amnesia, depersonalization, identity alteration, and switching between personality states — and identifying trauma, particularly childhood abuse, as a primary cause. It then presents the main arguments against MPD's existence, including claims of iatrogenesis, the influence of therapist suggestion, and the "Sybil" fraud case. Finally, it systematically counters these objections with empirical evidence, including cross-cultural studies, neurophysiological research, and treatment outcome data, concluding that MPD is a legitimate and diagnosable psychiatric condition.
- Introduction: Introduces MPD controversy and paper's thesis
- Defining MPD and Who Is Likely to Suffer: Defines MPD, causes, and affected populations
- The Difference Between MPD and Other Related Disorders: Describes MPD symptoms, alters, and dissociative subtypes
- Arguments Against the Existence of MPD: Presents skeptical and iatrogenesis-based objections
- Counterarguments to the Opposing View: Empirical research refuting anti-MPD claims
- Conclusion: Affirms MPD's legitimacy and calls for awareness
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What makes this paper effective
- The paper takes a clear, declared thesis early — that MPD genuinely exists — and structures the entire argument around defending that position, including fairly presenting opposing views before refuting them.
- The counterargument section is methodologically rigorous, citing cross-cultural studies (Chinese and Turkish populations) and treatment outcome research to dismantle specific claims, which gives the rebuttal credibility.
- The paper distinguishes carefully between anecdotal skepticism (e.g., the "Sybil" case) and systematic empirical evidence, demonstrating awareness of the difference between isolated examples and population-level research.
Key academic technique demonstrated
The paper employs a classical argumentative structure: thesis statement → supporting definitions and evidence → steelmanned opposing arguments → point-by-point refutation → conclusion. This technique — presenting the strongest opposing case before systematically dismantling it — is a hallmark of strong academic persuasion and models how to engage with scholarly disagreement honestly rather than selectively.
Structure breakdown
The paper opens with an introduction establishing the controversy and the author's position. Two sections then build the case for MPD's existence through clinical definitions, symptom descriptions, and diagnostic criteria. A dedicated section presents the main objections (DSM reclassification, iatrogenesis, the "Sybil" hoax, and the "fad" argument). The counterargument section addresses each objection with empirical studies. A brief conclusion summarizes the position and calls for greater public awareness.
Introduction
Multiple Personality Disorder (MPD) is a mysterious condition that remains controversial. Biological psychiatrists who use medication for treatment claim that MPD is, in most cases, non-existent, and that where it does exist, it is iatrogenic — that is, created by therapists who train their patients to interpret their symptoms as evidence of separate personalities. Nevertheless, specialized clinicians take the condition with notable seriousness, sometimes arranging separate meetings with the various facets of a patient's personality. Those who believe in the condition's existence point to data showing that different personalities present with different electroencephalogram (EEG) readings. Skeptics counter that trained actors can produce varying EEG tracings simply by switching between characters (Bhandari 2020).
Like other psychiatrists, those who study this area hold considered views regarding dissociative disorders. The argument in this paper is that Multiple Personality Disorder does, in fact, exist. The paper supports this position through substantive arguments and a fair engagement with opposing views before arriving at a conclusion.
Defining MPD and Who Is Likely to Suffer
MPD manifests as a complex psychological condition caused by a wide range of factors, most notably trauma experienced during childhood. Such trauma is typically repetitive and severe, involving physical, emotional, or sexual abuse. Multiple Personality Disorder is an extreme form of dissociation — a cognitive process that causes a disconnection in a person's thoughts, memories, actions, feelings, or sense of identity (Bhandari 2020).
Dissociative complications are thought to arise from a combination of factors, with trauma being central. Dissociation is understood as a coping mechanism: a person shuts off from an experience that is too overwhelming, violent, or painful to bear, detaching from it in order to integrate it with their conscious experience. Those most likely to develop MPD are individuals who have endured severe and repeated trauma, particularly during early childhood when the sense of identity is still forming.
The Difference Between MPD and Other Related Disorders
Multiple Personality Disorder is characterized by the presence of two or more distinct identities or personality states that take turns controlling a person's behavior. Victims commonly forget important personal information in ways too significant to be attributed to ordinary forgetfulness. Memory variations are a common symptom and often fluctuate considerably.
While not all individuals experience the same symptoms, some present with "alters" — alternate personality states — that differ in age, race, and sex (Brand et al. 2016). Each alter may exhibit its own gestures, gait, posture, and manner of speaking. In some cases, the alter is imagined as an animal or a fictional person. When a particular personality emerges and takes control of the individual, the process is called switching. Switching can last from minutes to hours, and in some cases, for days, weeks, or even months. Some cases require hypnosis when an alter is responsive to the therapist's requests.
Additional signs of MPD include amnesia, headaches, trances, time loss, and "out-of-body" experiences. Some individuals with the condition are prone to self-persecution, self-sabotage, or self-inflicted violence. For instance, a person with MPD might engage in behavior — such as speeding recklessly or stealing from close friends — that they would not ordinarily consider. They are compelled by their condition, and some describe the experience as another person taking charge of their body, leaving them feeling helpless and unable to govern their own choices (Ringrose 2018).
Dissociative disorders alter psychological functioning in several distinct ways:
Depersonalization: This involves detachment from one's own body, commonly described as an out-of-body experience.
Derealization: The external world appears unreal, foggy, or distant.
Amnesia: The individual is unable to recall important personal information to a degree that far exceeds ordinary forgetfulness. Microamnesias also occur, in which the content of a current conversation is forgotten within the same session.
Identity alteration and identity confusion: Both involve a sense of confusion about who one is. Signs of identity confusion include difficulty identifying personal interests, sexual orientation, religious or political views, or professional aspirations. Some cases involve distortions in time, place, and situation.
It is important to note that the dissociated states in MPD are neither mature nor fully independent personalities. Rather, they represent a disjointed form of identity. Amnesia is a typical symptom, and the various states each recall different portions of information about the same individual. The host personality — the one that identifies with the person's real name — is often unaware of the existence of the other personality states (Bhandari 2020).
Conclusion
There is a conspicuous and persistent scholarly interest in expanding the body of knowledge surrounding MPD. The evidence available supports the conclusion that MPD is a genuine psychiatric condition, recognizable across the globe and diagnosable reliably by trained clinicians across diverse community settings. Research consistently indicates that MPD is triggered by past traumas — particularly those experienced in childhood — and that the condition responds to evidence-based therapeutic approaches guided by established clinical consensus.
MPD is characterized by two or more distinct identities or personality states that take control of a person's behavior, and clear diagnostic methods have been developed and validated in recent years. Cross-cultural and neurophysiological research has established the condition's existence beyond individual anecdote. The cost of ignorance about MPD is significant — both for individual sufferers and for the communities that support them. Myths about the condition have no place in an evidence-informed society. There is, therefore, a pressing need for wider dissemination of accurate information about MPD and its treatment.
References
Bhandari, S. (reviewer). "Dissociative Identity Disorder (Multiple Personality Disorder)." WebMD (2020). Accessed 20 June 2020. https://www.webmd.com/mental-health/dissociative-identity-disorder-multiple-personality-disorder#1-4
Brand, Bethany L., Vedat Sar, Pam Stavropoulos, Christa Krüger, Marilyn Korzekwa, Alfonso Martínez-Taboas, and Warwick Middleton. "Separating fact from fiction: An empirical examination of six myths about dissociative identity disorder." Harvard Review of Psychiatry (2016).
Dorahy, Martin J., Bethany L. Brand, Vedat Sar, Christa Krüger, Pam Stavropoulos, Alfonso Martínez-Taboas, Roberto Lewis-Fernández, and Warwick Middleton. "Dissociative identity disorder: An empirical overview." Australian & New Zealand Journal of Psychiatry 48, no. 5 (2014): 402–417.
Frances, A. J. "Multiple Personality: Mental Disorder, Myth, or Metaphor?" Psychology Today (2014). Accessed 20 June 2020. https://www.psychologytoday.com/us/blog/saving-normal/201401/multiple-personality-mental-disorder-myth-or-metaphor
Jepsen, Ellen K. K., Willie Langeland, Hal Sexton, and Trond Heir. "In-patient treatment for early sexually abused adults: A naturalistic 12-month follow-up study." Psychological Trauma: Theory, Research, Practice, and Policy 6, no. 2 (2014): 142.
Lazarus, C. N. "Why DID, or MPD is a Bogus Diagnosis." Psychology Today (2011). Accessed 20 June 2020. https://www.psychologytoday.com/us/blog/think-well/201112/why-did-or-mpd-is-bogus-diagnosis
Nathan, Debbie. Sybil Exposed: The Extraordinary Story Behind the Famous Multiple Personality Case. Simon and Schuster, 2011.
Ringrose, Jo L. Understanding and Treating Dissociative Identity Disorder (or Multiple Personality Disorder). Routledge, 2018.
Yu, Junhan, Colin A. Ross, Benjamin B. Keyes, Ying Li, Yunfei Dai, Tianhong Zhang, Lanlan Wang, Qing Fan, and Zeping Xiao. "Dissociative disorders among Chinese in-patients diagnosed with schizophrenia." Journal of Trauma & Dissociation 11, no. 3 (2010): 358–372.
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