PSYCH 215 Lecture Notes - Lecture 14: Adrenocorticotropic Hormone, Posttraumatic Stress Disorder, Startle Response
1 Mar 2017
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Document Summary
Compulsions: behaviors or mental rituals designed to decrease anxiety created by obsessive thoughts. Obsessions or compulsions are time-consuming, distressing, and impairing. Behavioral model: focuses on compulsions, negatively reinforced by a reduction in anxiety. Exposure and response prevention (erp: client is exposed to anxiety provoking situations/obsessions, and resist performing compulsions, strong research support (50-85% will improve) Cognitive model: thoughts, images, impulses judged as unacceptable become false alarms, cognitive therapy (cbt) Biological model: genetic vulnerability, low levels of serotonin, dopamine, gaba, glutamate, abnormal activity in basal ganglia (caudate nuclei) and orbitofrontal cortex. Both linked to limbic system: ssris. Holding onto material objects, and have a hard time letting them go: trichotillomania disorder. Hair pulling: excoriation disorder, body dysmorphic disorder. Preoccupation with some imaginary defect on body. Stress: stressor: an event that creates a demand on the person, stress response. How we appreciate the event and our capacity to react effectively. When stressors are threatening, activates arousal and sense of fear.
