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Related Concept Videos

Dissociative Amnesia01:21

Dissociative Amnesia

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Dissociative amnesia is a complex psychological condition that manifests as an inability to recall personal information, often tied to traumatic or stressful events. Unlike general amnesia, individuals with this condition retain the ability to perform routine activities and procedural tasks, such as operating a phone or navigating public transportation, yet experience profound gaps in autobiographical memory. These lapses may encompass significant life events, such as suicide attempts or...
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Dissociative Identity Disorder01:30

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Dissociative Identity Disorder (DID), previously termed multiple personality disorder, is a complex psychological condition characterized by the presence of two or more distinct identities or personality states. Each identity exhibits unique patterns of behavior, voice, and mannerisms and may possess separate memories and emotional responses. The alternating control between identities can result in memory gaps and challenges in recalling daily activities, often exacerbating the individual's...
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Dissociative disorders represent complex psychological conditions characterized by disruptions in consciousness, memory, identity, or perception. These disruptions cause individuals to experience a disconnection from their thoughts, emotions, and memories. The phenomenon is not merely an occasional lapse in attention but a profound alteration in mental functioning that can severely impact daily life.
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Deindividuation is a form of social influence on an individual’s behavior such that the individual engages in unusual or non-normal behavior while in a group setting. Why? Because in these group settings, the individual no longer sees themselves as an individual anymore, disinhibiting their behavior and personal restraint.
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Amnesia is a condition marked by long-term memory loss, which impairs the ability to recall past events or create new memories.
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Personal identity is the deeply felt sense of self that individuals cultivate over time, intricately woven from intrinsic qualities they consider essential to their existence—qualities such as morality, intelligence, and friendliness. These attributes serve as vital internal benchmarks, guiding individuals in evaluating whether their actions resonate with their true selves.When personal identity takes center stage in one's life, individuals often emphasize their distinctiveness,...
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Related Experiment Video

Updated: Mar 1, 2026

Use of a Psychophysiological Script-driven Imagery Experiment to Study Trauma-related Dissociation in Borderline Personality Disorder
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Interidentity amnesia in dissociative identity disorder.

John Morton1

  • 1a Institute of Cognitive Neuroscience, University College , London , UK.

Cognitive Neuropsychiatry
|May 27, 2017
PubMed
Summary
This summary is machine-generated.

Memory transfer between alters in dissociative identity disorder (DID) varies. Some DID patients show no memory interference between alters, while others exhibit partial memory breakthrough, indicating non-homogeneous memory blocking.

Keywords:
DIDinter-alter amnesiamemory

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Area of Science:

  • Psychology
  • Neuroscience
  • Psychiatry

Background:

  • Dissociative identity disorder (DID) is characterized by distinct personality states (alters).
  • Alters often report no awareness of events experienced by other alters.
  • Episodic material transfer across alter boundaries is known to occur.

Purpose of the Study:

  • To objectively investigate the transfer of learned material between alters in individuals with DID.
  • To build upon Huntjens et al.'s method for demonstrating cross-alter material transfer.
  • To assess the homogeneity of memory blocking between alters in DID patients.

Main Methods:

  • Following Huntjens et al., two alters per patient were taught distinct sets of nouns.
  • A recognition memory test was administered to one alter, including taught words and distractors.
  • Patient responses were analyzed to determine the extent of material transfer between alters.

Main Results:

  • Two out of three patients showed no memory interference between specific alter pairs.
  • One patient exhibited partial memory breakthrough in a specific alter pairing.
  • A subsidiary experiment corroborated the breakthrough finding in one case.

Conclusions:

  • Individuals with dissociative identity disorder are not a homogeneous group regarding memory blocking.
  • The depth of episodic material blocking varies significantly between alters.
  • Findings suggest differing mechanisms or degrees of inter-alter awareness in DID.