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Related Concept Videos

Depression: Overview01:18

Depression: Overview

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Depression is a prevalent mental illness marked by persistent sadness and lack of interest in previously enjoyable activities. It can take several forms, including major depression, persistent depressive disorder, and bipolar I and II disorders. Symptoms range from emotional changes like chronic worry to physical changes like sleep disturbances and suicidal thoughts. From a neurobiological perspective, depression is believed to be triggered by abnormalities in the brain's prefrontal cortex,...
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Cognitive Therapy01:25

Cognitive Therapy

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Cognitive therapy, pioneered by Aaron T. Beck in the 1960s, is a structured approach to addressing psychological distress by focusing on the influence of thoughts on emotions and behaviors. All cognitive therapies involve the basic assumption that human beings have control over their feelings, and that how individuals feel about something depends on how they think about it. Unlike psychoanalytic methods that delve into unconscious processes or humanistic approaches emphasizing...
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Electroconvulsive Therapy01:30

Electroconvulsive Therapy

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Electroconvulsive therapy (ECT), or shock therapy, remains a critical biomedical intervention for severe, treatment-resistant depression. While its origins can be traced back to Hippocrates' observations that malaria-induced convulsions alleviated mental illness, modern ECT has evolved significantly from its earlier, more primitive applications. First introduced in 1938 by Ugo Cerletti and his colleagues, ECT involves inducing controlled seizures using electrical currents. In its early...
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Beck's Cognitive Therapy01:25

Beck's Cognitive Therapy

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Cognitive therapy is a psychological approach designed to address distortions in thinking, which can lead to negative emotions and unrealistic beliefs. These cognitive distortions often influence how individuals interpret and respond to situations, exacerbating emotional distress. Below are some prevalent cognitive distortions, their characteristics, and examples of how they manifest in thought processes.
Arbitrary Inference
Arbitrary inference involves making conclusions without sufficient...
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Depressive Disorders: Etiology01:27

Depressive Disorders: Etiology

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Depressive disorders result from a complex interplay of biological, psychological, and sociocultural factors, each contributing uniquely to the development and persistence of the condition. Understanding these factors provides critical insight into the multifaceted nature of depression.
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Antidepressant Drugs: Overview01:25

Antidepressant Drugs: Overview

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Antidepressant drugs are a class of medications primarily used for treating various mood disorders, including major depression, anxiety disorders, and other related conditions. These medicines work by modulating the neurotransmitter balance within the brain, alleviating depressive symptoms. Antidepressants can be broadly categorized into several groups according to their mechanism of action and chemical structure: Selective Serotonin Reuptake Inhibitors (SSRIs), Serotonin-Norepinephrine...
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Related Experiment Video

Updated: Jun 23, 2025

A New Method for Inducing a Depression-Like Behavior in Rats
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What we got wrong about depression and its treatment.

Steven D Hollon1

  • 1Department of Psychology, Vanderbilt University, Nashville, TN, 37203, USA.

Behaviour Research and Therapy
|June 26, 2024
PubMed
Summary

Depression may be a normal adaptation for problem-solving, not always a disease. Cognitive behavior therapy helps manage rumination, while antidepressants might prolong episodes and increase relapse risk.

Keywords:
Antidepressant medicationsCognitive behavior therapyDepressionEnduring effectEvolved adaptationIatrogenic effect

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Area of Science:

  • Evolutionary psychology
  • Psychiatry
  • Genetics

Background:

  • The understanding of depression and its treatment is evolving.
  • New epidemiological and genetic data are influencing this shift.
  • Evolutionary theory offers a novel perspective on depression.

Purpose of the Study:

  • To re-evaluate the nature of depression based on evolutionary principles.
  • To differentiate between nonpsychotic unipolar depression and bipolar mania.
  • To assess the roles of cognitive behavior therapy and antidepressant medications in depression treatment.

Main Methods:

  • Review of epidemiological and genetic findings related to depression.
  • Application of evolutionary theory to understand the adaptive functions of depression.
  • Analysis of the mechanisms of action for cognitive behavior therapy and antidepressant medications.

Main Results:

  • Depression is more prevalent than previously thought, with many non-recurrent cases.
  • Nonpsychotic unipolar depression may be an evolved adaptation for social problem-solving through rumination.
  • Antidepressant medications may suppress symptoms but prolong episodes, increasing relapse risk upon discontinuation.

Conclusions:

  • Nonpsychotic unipolar depression might be an adaptive trait, not solely a disease.
  • Cognitive behavior therapy can structure rumination to prevent self-blame and recurrence.
  • Antidepressant use should be carefully considered, especially for patients not at high risk for recurrence, due to potential for prolonged episodes and relapse risk.