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Interference and Decay01:16

Interference and Decay

Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
False Memories01:18

False Memories

False memories represent a cognitive distortion in which individuals recall events that did not happen, or remember them in an altered form. This phenomenon highlights the brain's constructive nature in processing and recalling memories, emphasizing that memory is not a perfect representation of past events but rather a dynamic reconstruction influenced by various factors.
One primary source of false memories is misattribution, where individuals incorrectly associate external information with...
Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders01:27

Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders

Schizophrenia is a neurodevelopmental disorder whose origins are rooted in complex genetic components. Despite our burgeoning understanding, the pathophysiology of this disorder remains incompletely deciphered.
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within the...
Forgetting01:21

Forgetting

Forgetting is an intrinsic aspect of human memory, characterized by the gradual loss or inaccessibility of information over time. Hermann Ebbinghaus, a pioneering psychologist, extensively studied this phenomenon and formulated the forgetting curve. This curve illustrates that memory loss occurs rapidly immediately after learning and then decelerates over time. Several mechanisms contribute to forgetting, including encoding failure, storage decay, retrieval failure, and interference.
Encoding...
Higher Mental Functions of Brain: Learning and Memory01:26

Higher Mental Functions of Brain: Learning and Memory

Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or playing an...
Psychological and Sociocultural Causes of Schizophrenia01:29

Psychological and Sociocultural Causes of Schizophrenia

Schizophrenia, a complex psychiatric disorder, has been historically misunderstood. Early psychological theories attributed its origins to childhood trauma and unresponsive parenting. However, contemporary research largely rejects these notions, favoring the vulnerability-stress hypothesis. This model proposes that individuals with a genetic predisposition to schizophrenia may develop the disorder following exposure to significant environmental stressors. Notably, studies on high-risk...

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Related Experiment Video

Updated: Jun 21, 2026

The Deese-Roediger-McDermott (DRM) Task: A Simple Cognitive Paradigm to Investigate False Memories in the Laboratory
07:26

The Deese-Roediger-McDermott (DRM) Task: A Simple Cognitive Paradigm to Investigate False Memories in the Laboratory

Published on: January 31, 2017

Memory-prediction errors and their consequences in schizophrenia.

Michael S Kraus1, Richard S E Keefe, Ranga K R Krishnan

  • 1Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC, USA. michael.kraus@duke.edu

Neuropsychology Review
|July 4, 2009
PubMed
Summary
This summary is machine-generated.

Schizophrenia involves cognitive deficits that precede psychosis. A failure in memory-based prediction systems may explain many schizophrenia symptoms, offering a new research framework.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Cognitive Psychology

Background:

  • Cognitive deficits are central to schizophrenia, often preceding psychosis and causing significant dysfunction.
  • Current measures of cognitive deficits show a weak relationship with core psychotic symptoms like hallucinations and delusions.
  • A lack of an organizing principle hinders understanding of cognitive impairment in schizophrenia research.

Purpose of the Study:

  • To review literature on memory-based prediction systems in human cognition.
  • To propose a framework where failures in memory-based prediction underlie schizophrenia symptoms.
  • To offer a novel organizing principle for schizophrenia cognitive impairment research.

Main Methods:

  • Literature review of memory-based prediction systems.
  • Synthesis of existing research on cognitive deficits in schizophrenia.
  • Theoretical modeling of symptom generation through predictive processing failures.

Main Results:

  • Memory-based prediction is fundamental to perception, thought, and action.
  • Dysfunction in predictive processing may explain diverse schizophrenia symptoms.
  • This framework offers a potential link between cognitive deficits and psychosis.

Conclusions:

  • A failure in memory-based prediction systems offers a unifying explanation for schizophrenia symptoms.
  • This predictive processing framework can guide future research into cognitive impairment in schizophrenia.
  • Understanding these mechanisms may lead to novel therapeutic targets.