Dissociative amnesia is a dissociative disorder in which a person cannot recall important personal information, usually tied to a traumatic or stressful event, and the memory gap cannot be explained by ordinary forgetting, brain injury, or a medical condition.
Dissociative amnesia is a dissociative disorder where the mind blocks access to important personal memories, almost always memories connected to trauma or extreme stress. The key word is dissociative. The memory loss is psychological, not biological. There's no concussion, no stroke, no drug effect. The brain is physically fine, but the person still can't retrieve the information.
The forgetting targets autobiographical (episodic) memory, the who-am-I and what-happened-to-me stuff. Someone with dissociative amnesia might forget a car accident, a period of abuse, or even their own identity, yet they can still drive, read, and tie their shoes because procedural and general knowledge stay intact. Think of it as the mind's emergency circuit breaker. When an experience is too painful to process, access to that memory gets cut off as a protective response. The memories aren't erased; they're often recoverable, sometimes suddenly or with therapy.
Dissociative amnesia lives in Topic 8.5: Trauma- and Stressor-Related, Dissociative, and Somatic Symptom and Related Disorders, where the CED expects you to identify dissociative disorders and link them to traumatic or stressful experiences. It's one of the cleanest examples of how psychological factors alone (no biological damage) can produce dramatic symptoms, which makes it a favorite for testing whether you understand the difference between psychological and biological explanations of disorders. It also connects the abnormal psych unit back to memory concepts, since you can't explain what's broken here without knowing what episodic memory and retrieval normally look like.
Dissociative Identity Disorder (Unit 8)
DID is dissociative amnesia's more extreme sibling. Both involve a split between consciousness and memory, but in DID the dissociation goes further and produces two or more distinct identities. Memory gaps actually show up in DID too, because one identity often can't recall what another did.
Traumatic Event (Unit 8)
Trauma is the trigger that ties Topic 8.5 together. The same kind of event that can produce PTSD in one person can produce dissociative amnesia in another. PTSD floods you with intrusive memories of the trauma, while dissociative amnesia does the opposite and locks the memory away.
Repression (Unit 8)
Repression is the psychodynamic idea that the mind pushes threatening memories out of awareness to protect itself. Dissociative amnesia looks like repression playing out as a diagnosable disorder, which is exactly why psychodynamic theorists point to it as evidence for their view of the unconscious.
Psychogenic Amnesia (Unit 8)
This is just the older name for the same condition. 'Psychogenic' literally means 'originating in the mind,' which is the whole point. The memory loss comes from psychological stress, not physical causes. If you see either term on a question, treat them as the same disorder.
This term shows up almost entirely in multiple-choice identification questions, and they tend to follow one of two patterns. The first gives you a symptom description, like 'an inability to recall important personal information that cannot be explained by ordinary forgetfulness,' and asks you to name the disorder. The second asks how the forgetting works, testing whether you know that the lost information is personal and trauma-related, the cause is psychological rather than biological, and other memory systems stay intact. Your job is matching: trauma plus memory loss plus no physical cause equals dissociative amnesia. Watch for distractors describing brain-injury amnesia or PTSD. No released FRQ has used this term verbatim, but it works well as an example when a free response asks you to apply concepts from the disorders unit.
Both are dissociative disorders triggered by trauma, but they break in different ways. Dissociative amnesia is a memory problem only. The person stays one person; they just can't access certain autobiographical memories. Dissociative identity disorder is an identity problem. The person develops two or more distinct identity states, often with memory gaps between them. Quick test for MCQs: if the question only mentions forgotten personal information, it's dissociative amnesia. If it mentions separate personalities or identity states, it's DID.
Dissociative amnesia is the inability to recall important personal information, usually about a traumatic or stressful event, that goes beyond ordinary forgetting.
The cause is psychological, not biological, so there is no brain injury, substance effect, or medical condition behind the memory loss.
The forgetting hits autobiographical (episodic) memory while procedural memory and general knowledge stay intact.
It belongs to the dissociative disorders in Topic 8.5, alongside dissociative identity disorder, and trauma is the common trigger for the whole category.
The memories are blocked, not destroyed, and they can return spontaneously or through treatment.
On multiple choice, the combination of trauma, personal memory loss, and no physical cause should point you straight to dissociative amnesia.
It's a dissociative disorder in which a person cannot recall important personal information, usually surrounding a traumatic or stressful event, and the gap can't be explained by ordinary forgetting or any medical condition. It's covered in Topic 8.5 with the other dissociative disorders.
No, and that's the defining feature. Amnesia from a head injury, stroke, or drugs is biological, while dissociative amnesia is purely psychological and triggered by trauma or extreme stress. Exam questions love distractors that describe brain-injury amnesia, so check the cause before you answer.
Dissociative amnesia involves memory loss only, while dissociative identity disorder involves two or more distinct identity states. Both are dissociative disorders linked to trauma, and DID often includes memory gaps too, but only DID involves separate identities.
They're related but not identical. Repression is the psychodynamic concept of unconsciously pushing painful memories out of awareness, while dissociative amnesia is the actual diagnosable disorder where that kind of blocking produces real, significant memory gaps. Think of repression as the proposed mechanism and dissociative amnesia as the clinical condition.
Nothing, really. Psychogenic amnesia is an older name for the same disorder, and 'psychogenic' just means the memory loss originates in the mind rather than from physical damage. Treat the two terms as interchangeable on the exam.
Connect this key term to the AP exam workflow: review the course, practice questions, and check related study tools.
Review units, study guides, and course resources.
Check this vocabulary in multiple-choice context.
Apply key concepts in written AP responses.
Estimate the exam score you are working toward.
Review the highest-yield facts before practice.
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