In this episode of The Psychology Undergrad, we build a clean mental model for Chapter 6 OCRDs using a simple analogy: OCD is a car with a broken gear shift. You’ll learn the three-part circuit (orbitofrontal cortex as error detector, anterior cingulate as the anxiety alarm, caudate nucleus as the gear shifter) and why the brain fails to register “all clear.” We connect that to exam terms like obsessions vs. compulsions, ego-dystonic thoughts, magical thinking, and the checking effect. Then we run through the treatment ladder—ERP, cognitive strategies, SSRIs, and more extreme interventions—before covering hoarding, BDD, and body-focused repetitive behaviors with the key distinctions you’ll be tested on.

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