Evolutionary Psychology
Criticisms of the Evolutionary Perspective
Instinct Theory
Human Genetics
Obsessive-Compulsive Disorder
Primary Motives: Sleep, Sex, and Pain Avoidance
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Updated: Mar 28, 2026

Signal Attenuation as a Rat Model of Obsessive Compulsive Disorder
Published on: January 9, 2015
Dan J Stein1, Haggai Hermesh2, David Eilam3
1Department of Psychiatry, University of Cape Town, South Africa.
This study explores evolutionary medicine to understand compulsive symptoms in obsessive-compulsive disorder (OCD) and behavioral addictions. Some OCD symptoms may be useful defenses, while addiction symptoms can stem from evolutionary mismatch, aiding assessment and intervention.
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