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Obsessive-Compulsive Disorder01:28

Obsessive-Compulsive Disorder

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Obsessive-compulsive disorder (OCD) is a mental health condition characterized by recurrent obsessions, compulsions, or both, which consume significant time and interfere with daily functioning. Obsessions involve persistent, intrusive, and unwanted thoughts, images, or urges that evoke anxiety. Common examples include irrational fears of contamination or harm. Compulsions are repetitive behaviors or mental acts performed to reduce the anxiety caused by obsessions. For instance, individuals...
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Personality Disorders: Dependent and Obsessive-Compulsive01:24

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Dependent personality disorder and obsessive-compulsive personality disorder are two separate psychological conditions that influence behavior, relationships, and overall life functioning. Though both involve maladaptive behaviors, their core characteristics and motivations differ significantly.
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Anxiety is a common mental disorder featuring excessive worry, fear, and apprehension, significantly affecting daily life. People with anxiety disorders experience persistent and intense anxiety, interrupting their everyday functioning.
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Positive Symptoms of Schizophrenia: Hallucinations and Delusions01:30

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Schizophrenia is a complex mental health disorder that can manifest with various positive symptoms, including thought, movement, and behavior disorders. These symptoms significantly disrupt cognitive and motor functions, leading to profound effects on an individual's ability to engage with the world.
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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.
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Operant conditioning serves as a foundational principle in therapeutic interventions aimed at modifying maladaptive behaviors. Central to this approach is the notion that behaviors, both adaptive and maladaptive, are learned through reinforcement. By analyzing the environmental factors that reinforce problematic behaviors, clinicians can design interventions to weaken these reinforcements and replace maladaptive behaviors with healthier alternatives.
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Obsessive-Compulsive Behavior Isn't Necessarily a Bad Thing.

Philippa Marrack1,2

  • 1Department of Biomedical Research, National Jewish Health, Denver, Colorado 80206, USA;

Annual Review of Immunology
|October 10, 2019
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Summary
This summary is machine-generated.

This article details the journey of T cell biology research from its beginnings in 1960 to current knowledge. It highlights discoveries about T cells and their antigen receptors, overcoming initial ignorance and confusion.

Keywords:
T cell receptorautobiographyclonal deletionmajor histocompatibility complexpositive selectionsuperantigensthymus

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Area of Science:

  • Immunology
  • Cell Biology

Background:

  • In 1960, knowledge of the thymus and T cells was minimal.
  • T cells bearing alpha-beta (αβ) T cell receptors (TCRs) were largely uncharacterized.

Purpose of the Study:

  • To recount the historical development of T cell biology.
  • To describe key findings that advanced understanding of T cells and their antigen receptors.

Main Methods:

  • Historical review of scientific literature.
  • Personal reflection on scientific discoveries and career path.

Main Results:

  • Significant progress has been made in understanding T cell function and the TCR.
  • The field has moved from a state of ignorance to comprehensive knowledge.

Conclusions:

  • The evolution of T cell biology showcases scientific progress through collaborative research.
  • The author reflects on navigating a male-dominated scientific field as a woman.