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Related Concept Videos

Diagnostic and Statistical Manual of Mental Disorders (DSM)01:27

Diagnostic and Statistical Manual of Mental Disorders (DSM)

The Diagnostic and Statistical Manual of Mental Disorders (DSM) serves as the primary classification system for mental health disorders, providing standardized diagnostic criteria for clinicians and researchers. First published by the American Psychiatric Association (APA) in 1952, the DSM has undergone several revisions to reflect evolving psychiatric understanding. The fifth edition, DSM-5, released in 2013, introduced key updates that expanded diagnostic categories and modified diagnostic...
Introduction to Psychological Disorders01:19

Introduction to Psychological Disorders

Abnormal behavior, often referred to as mental illness, results from changes in brain function that influence thought patterns, behaviors, and social interactions. Psychologists and psychiatrists typically assess abnormal behavior using three primary criteria: deviance, maladaptation, and personal distress, particularly when these traits persist over long periods.
Deviant Behavior
Deviance in behavior refers to actions or thought patterns that significantly diverge from societal norms or...
Psychosurgery01:30

Psychosurgery

Psychosurgery, the surgical alteration or permanent removal of brain tissue to alleviate severe psychological conditions, stands as one of the most radical and controversial treatments in the history of mental health care. Its development and application have evolved significantly, marked by dramatic shifts in scientific understanding and ethical perspectives.
Historical Development of Psychosurgery
In the 1930s, Portuguese neurologist Antonio Egas Moniz introduced a surgical procedure designed...
Theoretical Approaches to Psychological Disorder01:29

Theoretical Approaches to Psychological Disorder

The development of psychological disorders, which are characterized by deviant, maladaptive, and personally distressing behaviors, has been explored through several theoretical approaches.
Biological approach
The biological approach posits that internal, organic factors are the primary causes of such disorders. This perspective emphasizes brain structure and function, genetic predispositions, and neurotransmitter imbalances. For example, schizophrenia has been associated with both genetic...
Psychosis and Antipsychotic Drugs: Overview01:28

Psychosis and Antipsychotic Drugs: Overview

The term "psychosis" refers to a spectrum of mental disorders characterized by abnormal thoughts, perceptions, and behaviors. It can manifest as mood disorders, dementia, delirium with psychotic features, substance-induced psychosis with psychotic features, brief psychotic disorder, delusional disorder, schizoaffective disorder, and schizophrenia. Among all these disorders, schizophrenia is the most common psychotic disorder, affecting 1% of the worldwide population. Psychotic symptoms in all...
Schizophrenia01:17

Schizophrenia

Schizophrenia, a term introduced by Swiss psychiatrist Eugen Bleuler in 1911, describes a severe psychological disorder marked by profound disruptions in attention, thought processes, language, emotion, and interpersonal relationships. The core feature of schizophrenia is psychosis — a state characterized by a fundamental detachment from reality. This disconnection manifests through distorted logic, impaired perception, and atypical behavior, severely affecting the lives of those diagnosed.

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Related Experiment Video

Updated: Jun 3, 2026

Use of a Psychophysiological Script-driven Imagery Experiment to Study Trauma-related Dissociation in Borderline Personality Disorder
09:55

Use of a Psychophysiological Script-driven Imagery Experiment to Study Trauma-related Dissociation in Borderline Personality Disorder

Published on: March 8, 2018

[Revision of psychiatric classification].

Jyrki Korkeila1

  • 1Turun yliopisto, psykiatria Kunnallissairaalantie 20, 20700 Turku.

Duodecim; Laaketieteellinen Aikakauskirja
|March 29, 2011
PubMed
Summary

Psychiatric classification systems like the International Classification of Diseases (ICD) and Diagnostic and Statistical Manual of Mental Disorders (DSM) are undergoing revisions. Future classifications will likely retain categorical disorders alongside dimensional assessments for improved diagnostic reliability.

Area of Science:

  • Psychiatry and Mental Health Diagnostics
  • Nosology and Classification Systems

Context:

  • Ongoing revisions of major psychiatric classification systems, including the International Classification of Diseases (ICD-11) and the Diagnostic and Statistical Manual of Mental Disorders (DSM-V).
  • Historical development of criteria-based psychiatric classification rooted in the 1950s with the concept of construct validity.
  • International efforts to enhance the reliability of psychiatric diagnoses through revised classification criteria.

Purpose:

  • To address central issues in psychiatric classification revisions, such as utility, heterogeneity, and overlapping categories.
  • To explore the incorporation of dimensional assessment into psychiatric diagnostics.
  • To evaluate the feasibility and complexity of implementing purely dimensional classification systems.

Summary:

Related Experiment Videos

Last Updated: Jun 3, 2026

Use of a Psychophysiological Script-driven Imagery Experiment to Study Trauma-related Dissociation in Borderline Personality Disorder
09:55

Use of a Psychophysiological Script-driven Imagery Experiment to Study Trauma-related Dissociation in Borderline Personality Disorder

Published on: March 8, 2018

  • The scientific basis for psychiatric classification, established in the 1950s, is being revisited for upcoming ICD-11 and DSM-V revisions.
  • Key revision themes include improving diagnostic utility, addressing category heterogeneity, and reducing diagnostic overlap.
  • While dimensional assessment is a focus, its sole use may introduce excessive complexity, suggesting a continued role for categorical diagnoses.

Impact:

  • Informs the development of future psychiatric diagnostic criteria, balancing categorical and dimensional approaches.
  • Aims to improve the reliability and clinical utility of psychiatric diagnoses globally.
  • Highlights the ongoing evolution of mental disorder classification in response to scientific advancements and clinical needs.