Related Experiment Video
Updated: Aug 8, 2026

An Unpredictable Chronic Mild Stress Protocol for Instigating Depressive Symptoms, Behavioral Changes and Negative Health Outcomes in Rodents
Published on: December 2, 2015
A proposal to classify happiness as a psychiatric disorder
1Department of Clinical Psychology, Liverpool University.
This study proposes classifying happiness as a psychiatric disorder, termed major affective disorder, pleasant type. Research suggests happiness is statistically abnormal, with symptoms linked to central nervous system dysfunction.
Area of Science:
- Psychiatry
- Neuroscience
- Mental Health Classification
Background:
- Current diagnostic manuals lack a classification for happiness.
- Happiness, though positively valued, exhibits characteristics of a disorder.
Purpose of the Study:
- To propose classifying happiness as a psychiatric disorder.
- To introduce the diagnostic term 'major affective disorder, pleasant type'.
Main Methods:
- Literature review of existing research on happiness.
- Analysis of happiness's statistical abnormality and symptom clusters.
Main Results:
- Happiness is statistically abnormal.
- Happiness presents a discrete cluster of symptoms.
- Associated cognitive abnormalities and potential central nervous system dysfunction are noted.
Conclusions:
- Happiness meets criteria for classification as a psychiatric disorder.
- The proposed classification is 'major affective disorder, pleasant type'.
- The non-negative valuation of happiness is deemed scientifically irrelevant for classification.
Related Concept Videos
Traits, Mood, and Subjective Wellbeing
Neuroticism and Emotional...
Introduction to Psychological Disorders
Deviant Behavior
Deviance in behavior refers to actions or thought patterns that significantly diverge from societal norms or...
Theoretical Approaches to Psychological Disorder
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...
Diagnostic and Statistical Manual of Mental Disorders (DSM)
Depressive Disorders: MDD and Dysthymia
Depressive Disorders: Etiology
Biological Factors in Depression
Biological predispositions significantly influence the risk of developing depressive disorders. Genetic studies highlight the role of variations in the serotonin transporter...

