PSYD33H3 Lecture Notes - Comorbidity, Posttraumatic Stress Disorder, Dsm-5
Document Summary
Quantitative hierarchical model (part one: dsm 5. 0 does not reflect watson"s model, next will be 5. 1 because science is moving fast. Answer: high comorbidity among disorders (if it"s high maybe disorders are not separate). Example: gad and depression have high comorbidity, but are in different sections (mood vs anxiety disorders). Rule out criteria, comorbidity is 90 %, therefore they are basically the same. Nos (not otherwise specified) is used a lot: ptsd example: you have to have criteria a (event that in which you thought you may die or be injured or see someone else die/ be injured). You have to meet criteria a to have. People that do not meet this would be anxiety disorder nos with ptsd features: dsm iv diagnosis is based on 2 clinicians having the same diagnoses on someone with a disorder (reliability). There are very few biological markers for many of the disorders, therefore validity is hard to find.
